Organisationsahrefsocannlacb41d ()debian-12-5.3+flambda_opam-2.3

debian-12-5.3+flambda_opam-2.3

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2025-06-29 09:21.17: New job: test ahrefs/ocannl https://github.com/ahrefs/ocannl.git#refs/heads/master (acb41d23296a2aa263b99ade3ffe9ce5e3f38d49) (linux-x86_64:debian-12-5.3+flambda_opam-2.3)
Base: ocaml/opam:debian-12-ocaml-5.3-flambda@sha256:9e475fbf88bdaa617e51defa342ae0f448f17149fa382a1db5fe525aecb6e684
Opam project build


To reproduce locally:


git clone --recursive "https://github.com/ahrefs/ocannl.git" -b "master" && cd "ocannl" && git reset --hard acb41d23
cat > Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:debian-12-ocaml-5.3-flambda@sha256:9e475fbf88bdaa617e51defa342ae0f448f17149fa382a1db5fe525aecb6e684
# debian-12-5.3+flambda_opam-2.3
USER 1000:1000
ENV CLICOLOR_FORCE="1"
ENV OPAMCOLOR="always"
WORKDIR /src
RUN sudo ln -f /usr/bin/opam-2.3 /usr/bin/opam
RUN opam init --reinit -ni
RUN uname -rs && opam exec -- ocaml -version && opam --version
WORKDIR /src
RUN sudo chown opam /src
RUN cd ~/opam-repository && (git cat-file -e 7210227672addfb4db789560e45923f54c0aeab1 || git fetch origin master) && git reset -q --hard 7210227672addfb4db789560e45923f54c0aeab1 && git log --no-decorate -n1 --oneline && opam update -u
COPY --chown=1000:1000 neural_nets_lib.opam arrayjit.opam ./
RUN opam pin add -yn neural_nets_lib.dev './' && \
opam pin add -yn arrayjit.dev './'
RUN echo '(lang dune 3.0)' > './dune-project'
ENV DEPS="angstrom.0.16.1 astring.0.8.5 backoff.0.1.1 base.v0.17.3 base-bigarray.base base-bytes.base base-domains.base base-effects.base base-nnp.base base-threads.base base-unix.base bigarray-compat.1.1.0 bigstringaf.0.10.0 camlp-streams.5.0.1 camlzip.1.13 cmdliner.1.3.0 conf-libcurl.2 conf-libffi.2.0.0 conf-pkg-config.4 conf-zlib.1 cppo.1.8.0 csexp.1.5.2 csv.2.4 ctypes.0.23.0 ctypes-foreign.0.23.0 curl.0.10.0 dune.3.19.1 dune-configurator.3.19.1 fieldslib.v0.17.0 fmt.0.10.0 integers.0.7.0 jane-street-headers.v0.17.0 jst-config.v0.17.0 logs.0.8.0 mdx.2.5.0 mtime.2.1.0 multicore-magic.2.3.1 num.1.6 ocaml.5.3.0 ocaml-compiler.5.3.0 ocaml-compiler-libs.v0.17.0 ocaml-config.3 ocaml-syntax-shims.1.0.0 ocaml-variants.5.3.0+options ocaml-version.4.0.1 ocaml_intrinsics_kernel.v0.17.1 ocamlbuild.0.16.1 ocamlfind.1.9.8 parsexp.v0.17.0 pprint.20230830 ppx_assert.v0.17.0 ppx_base.v0.17.0 ppx_cold.v0.17.0 ppx_compare.v0.17.0 ppx_derivers.1.2.1 ppx_deriving.6.1.0 ppx_enumerate.v0.17.0 ppx_expect.v0.17.3 ppx_fields_conv.v0.17.0 ppx_globalize.v0.17.2 ppx_hash.v0.17.0 ppx_here.v0.17.0 ppx_inline_test.v0.17.1 ppx_minidebug.2.3.0 ppx_optcomp.v0.17.1 ppx_sexp_conv.v0.17.1 ppx_string.v0.17.0 ppx_variants_conv.v0.17.1 ppxlib.0.36.0 ppxlib_jane.v0.17.4 printbox.0.12 printbox-ext-plot.0.12 printbox-html.0.12 printbox-md.0.12 printbox-text.0.12 ptime.1.2.0 re.1.12.0 result.1.5 saturn_lockfree.0.5.0 seq.base sexplib.v0.17.0 sexplib0.v0.17.0 stdio.v0.17.0 stdlib-shims.0.3.0 thread-local-storage.0.2 time_now.v0.17.0 topkg.1.0.8 tyxml.4.6.0 uucp.16.0.0 uutf.1.0.4 variantslib.v0.17.0"
ENV CI="true"
ENV OCAMLCI="true"
RUN opam update --depexts && opam install --cli=2.3 --depext-only -y neural_nets_lib.dev arrayjit.dev $DEPS
RUN opam install $DEPS
COPY --chown=1000:1000 . /src
RUN opam exec -- dune build @install @check @runtest && rm -rf _build


END-OF-DOCKERFILE
docker build .
END-REPRO-BLOCK


2025-06-29 09:21.17: Using cache hint "ahrefs/ocannl-ocaml/opam:debian-12-ocaml-5.3-flambda@sha256:9e475fbf88bdaa617e51defa342ae0f448f17149fa382a1db5fe525aecb6e684-debian-12-5.3+flambda_opam-2.3-f60762657b082e7e37e87f8a6d1536c3"
2025-06-29 09:21.17: Using OBuilder spec:
((from ocaml/opam:debian-12-ocaml-5.3-flambda@sha256:9e475fbf88bdaa617e51defa342ae0f448f17149fa382a1db5fe525aecb6e684)
(comment debian-12-5.3+flambda_opam-2.3)
(user (uid 1000) (gid 1000))
(env CLICOLOR_FORCE 1)
(env OPAMCOLOR always)
(workdir /src)
(run (shell "sudo ln -f /usr/bin/opam-2.3 /usr/bin/opam"))
(run (shell "opam init --reinit -ni"))
(run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))
(workdir /src)
(run (shell "sudo chown opam /src"))
(run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(network host)
(shell "cd ~/opam-repository && (git cat-file -e 7210227672addfb4db789560e45923f54c0aeab1 || git fetch origin master) && git reset -q --hard 7210227672addfb4db789560e45923f54c0aeab1 && git log --no-decorate -n1 --oneline && opam update -u"))
(copy (src neural_nets_lib.opam arrayjit.opam) (dst ./))
(run (network host)
(shell  "opam pin add -yn neural_nets_lib.dev './' && \
\nopam pin add -yn arrayjit.dev './'"))
(run (network host)
(shell "echo '(lang dune 3.0)' > './dune-project'"))
(env DEPS "angstrom.0.16.1 astring.0.8.5 backoff.0.1.1 base.v0.17.3 base-bigarray.base base-bytes.base base-domains.base base-effects.base base-nnp.base base-threads.base base-unix.base bigarray-compat.1.1.0 bigstringaf.0.10.0 camlp-streams.5.0.1 camlzip.1.13 cmdliner.1.3.0 conf-libcurl.2 conf-libffi.2.0.0 conf-pkg-config.4 conf-zlib.1 cppo.1.8.0 csexp.1.5.2 csv.2.4 ctypes.0.23.0 ctypes-foreign.0.23.0 curl.0.10.0 dune.3.19.1 dune-configurator.3.19.1 fieldslib.v0.17.0 fmt.0.10.0 integers.0.7.0 jane-street-headers.v0.17.0 jst-config.v0.17.0 logs.0.8.0 mdx.2.5.0 mtime.2.1.0 multicore-magic.2.3.1 num.1.6 ocaml.5.3.0 ocaml-compiler.5.3.0 ocaml-compiler-libs.v0.17.0 ocaml-config.3 ocaml-syntax-shims.1.0.0 ocaml-variants.5.3.0+options ocaml-version.4.0.1 ocaml_intrinsics_kernel.v0.17.1 ocamlbuild.0.16.1 ocamlfind.1.9.8 parsexp.v0.17.0 pprint.20230830 ppx_assert.v0.17.0 ppx_base.v0.17.0 ppx_cold.v0.17.0 ppx_compare.v0.17.0 ppx_derivers.1.2.1 ppx_deriving.6.1.0 ppx_enumerate.v0.17.0 ppx_expect.v0.17.3 ppx_fields_conv.v0.17.0 ppx_globalize.v0.17.2 ppx_hash.v0.17.0 ppx_here.v0.17.0 ppx_inline_test.v0.17.1 ppx_minidebug.2.3.0 ppx_optcomp.v0.17.1 ppx_sexp_conv.v0.17.1 ppx_string.v0.17.0 ppx_variants_conv.v0.17.1 ppxlib.0.36.0 ppxlib_jane.v0.17.4 printbox.0.12 printbox-ext-plot.0.12 printbox-html.0.12 printbox-md.0.12 printbox-text.0.12 ptime.1.2.0 re.1.12.0 result.1.5 saturn_lockfree.0.5.0 seq.base sexplib.v0.17.0 sexplib0.v0.17.0 stdio.v0.17.0 stdlib-shims.0.3.0 thread-local-storage.0.2 time_now.v0.17.0 topkg.1.0.8 tyxml.4.6.0 uucp.16.0.0 uutf.1.0.4 variantslib.v0.17.0")
(env CI true)
(env OCAMLCI true)
(run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(network host)
(shell "opam update --depexts && opam install --cli=2.3 --depext-only -y neural_nets_lib.dev arrayjit.dev $DEPS"))
(run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(network host)
(shell "opam install $DEPS"))
(copy (src .) (dst /src))
(run (shell "opam exec -- dune build @install @check @runtest && rm -rf _build"))
)


2025-06-29 09:21.17: Waiting for resource in pool OCluster
2025-06-29 09:21.17: Waiting for worker…
2025-06-29 09:21.18: Got resource from pool OCluster
Building on bremusa.ocamllabs.io
All commits already cached
HEAD is now at acb41d23 Auto-set hosted for Train.to_routine; fix ambiguous mem mode provenances


(from ocaml/opam:debian-12-ocaml-5.3-flambda@sha256:9e475fbf88bdaa617e51defa342ae0f448f17149fa382a1db5fe525aecb6e684)
Unable to find image 'ocaml/opam:debian-12-ocaml-5.3-flambda@sha256:9e475fbf88bdaa617e51defa342ae0f448f17149fa382a1db5fe525aecb6e684' locally
docker.io/ocaml/opam@sha256:9e475fbf88bdaa617e51defa342ae0f448f17149fa382a1db5fe525aecb6e684: Pulling from ocaml/opam
f5b229dd7f20: Already exists
Digest: sha256:9e475fbf88bdaa617e51defa342ae0f448f17149fa382a1db5fe525aecb6e684
Status: Downloaded newer image for ocaml/opam@sha256:9e475fbf88bdaa617e51defa342ae0f448f17149fa382a1db5fe525aecb6e684
2025-06-29 09:21.19 ---> using "8a80ef1a11f542078d30e4165fc076ff6b28a9cb96bb84889911756c4767847f" from cache


/: (comment debian-12-5.3+flambda_opam-2.3)


/: (user (uid 1000) (gid 1000))


/: (env CLICOLOR_FORCE 1)


/: (env OPAMCOLOR always)


/: (workdir /src)


/src: (run (shell "sudo ln -f /usr/bin/opam-2.3 /usr/bin/opam"))
2025-06-29 09:21.19 ---> using "ce8a2d496fdddb1b05ac3bede5c7f10ecf9c91c16d2596508779869b6d8ee467" from cache


/src: (run (shell "opam init --reinit -ni"))
Configuring from /home/opam/.opamrc and then from built-in defaults.
Checking for available remotes: rsync and local, git.
- you won't be able to use mercurial repositories unless you install the hg command on your system.
- you won't be able to use darcs repositories unless you install the darcs command on your system.


This development version of opam requires an update to the layout of /home/opam/.opam from version 2.0 to version 2.2, which can't be reverted.
You may want to back it up before going further.


Continue? [y/n] y
Format upgrade done.


<><> Updating repositories ><><><><><><><><><><><><><><><><><><><><><><><><><><>
[default] Initialised
2025-06-29 09:21.19 ---> using "9ff089c7000e4b343c6a187a768069e4c1e1426959e0239a0fc82137a05169f5" from cache


/src: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))
Linux 6.8.0-59-generic
The OCaml toplevel, version 5.3.0
2.3.0
2025-06-29 09:21.19 ---> using "c16225f10dee0308dbf3d3d86eeb958c67cc857a221dbafc9f3b245cd416001d" from cache


/src: (workdir /src)


/src: (run (shell "sudo chown opam /src"))
2025-06-29 09:21.19 ---> using "b5a006a54db70841c7faba80c34d5c9afa1f1540bbce71bd4b5e05be29d8ad77" from cache


/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(network host)
(shell "cd ~/opam-repository && (git cat-file -e 7210227672addfb4db789560e45923f54c0aeab1 || git fetch origin master) && git reset -q --hard 7210227672addfb4db789560e45923f54c0aeab1 && git log --no-decorate -n1 --oneline && opam update -u"))
From https://github.com/ocaml/opam-repository
* branch                  master     -> FETCH_HEAD
bc726805e3..ce0939185e  master     -> origin/master
7210227672 Merge pull request #28100 from smuenzel/ppx-deriving-6.1.0-ocaml-5.4


<><> Updating package repositories ><><><><><><><><><><><><><><><><><><><><><><>
[default] synchronised from git+file:///home/opam/opam-repository


Everything as up-to-date as possible (run with --verbose to show unavailable upgrades).
However, you may "opam upgrade" these packages explicitly, which will ask permission to downgrade or uninstall the conflicting packages.
Nothing to do.
# To update the current shell environment, run: eval $(opam env)
2025-06-29 09:21.19 ---> using "64ae8e8e92deb3bd6bb0e460ccd8e7209428e7cf0636027ef026910b5bac2abd" from cache


/src: (copy (src neural_nets_lib.opam arrayjit.opam) (dst ./))
2025-06-29 09:21.19 ---> using "2298190345389b1e7f52d958244d42a05eeabc03a2a58e453ffdf464acb08715" from cache


/src: (run (network host)
(shell  "opam pin add -yn neural_nets_lib.dev './' && \
\nopam pin add -yn arrayjit.dev './'"))
[neural_nets_lib.dev] synchronised (file:///src)
neural_nets_lib is now pinned to file:///src (version dev)
[arrayjit.dev] synchronised (file:///src)
arrayjit is now pinned to file:///src (version dev)
2025-06-29 09:21.19 ---> using "61f09c176e4e5cea652b9eab6c8c8eeb4ec795deeff8ac3a7bf123d6ee301469" from cache


/src: (run (network host)
(shell "echo '(lang dune 3.0)' > './dune-project'"))
2025-06-29 09:21.19 ---> using "7a27f06768d322e6ae21796b412836b63620dd94d76d39e5ae3a348e9b339014" from cache


/src: (env DEPS "angstrom.0.16.1 astring.0.8.5 backoff.0.1.1 base.v0.17.3 base-bigarray.base base-bytes.base base-domains.base base-effects.base base-nnp.base base-threads.base base-unix.base bigarray-compat.1.1.0 bigstringaf.0.10.0 camlp-streams.5.0.1 camlzip.1.13 cmdliner.1.3.0 conf-libcurl.2 conf-libffi.2.0.0 conf-pkg-config.4 conf-zlib.1 cppo.1.8.0 csexp.1.5.2 csv.2.4 ctypes.0.23.0 ctypes-foreign.0.23.0 curl.0.10.0 dune.3.19.1 dune-configurator.3.19.1 fieldslib.v0.17.0 fmt.0.10.0 integers.0.7.0 jane-street-headers.v0.17.0 jst-config.v0.17.0 logs.0.8.0 mdx.2.5.0 mtime.2.1.0 multicore-magic.2.3.1 num.1.6 ocaml.5.3.0 ocaml-compiler.5.3.0 ocaml-compiler-libs.v0.17.0 ocaml-config.3 ocaml-syntax-shims.1.0.0 ocaml-variants.5.3.0+options ocaml-version.4.0.1 ocaml_intrinsics_kernel.v0.17.1 ocamlbuild.0.16.1 ocamlfind.1.9.8 parsexp.v0.17.0 pprint.20230830 ppx_assert.v0.17.0 ppx_base.v0.17.0 ppx_cold.v0.17.0 ppx_compare.v0.17.0 ppx_derivers.1.2.1 ppx_deriving.6.1.0 ppx_enumerate.v0.17.0 ppx_expect.v0.17.3 ppx_fields_conv.v0.17.0 ppx_globalize.v0.17.2 ppx_hash.v0.17.0 ppx_here.v0.17.0 ppx_inline_test.v0.17.1 ppx_minidebug.2.3.0 ppx_optcomp.v0.17.1 ppx_sexp_conv.v0.17.1 ppx_string.v0.17.0 ppx_variants_conv.v0.17.1 ppxlib.0.36.0 ppxlib_jane.v0.17.4 printbox.0.12 printbox-ext-plot.0.12 printbox-html.0.12 printbox-md.0.12 printbox-text.0.12 ptime.1.2.0 re.1.12.0 result.1.5 saturn_lockfree.0.5.0 seq.base sexplib.v0.17.0 sexplib0.v0.17.0 stdio.v0.17.0 stdlib-shims.0.3.0 thread-local-storage.0.2 time_now.v0.17.0 topkg.1.0.8 tyxml.4.6.0 uucp.16.0.0 uutf.1.0.4 variantslib.v0.17.0")


/src: (env CI true)


/src: (env OCAMLCI true)


/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(network host)
(shell "opam update --depexts && opam install --cli=2.3 --depext-only -y neural_nets_lib.dev arrayjit.dev $DEPS"))
+ /usr/bin/sudo "apt-get" "update"
- Hit:1 http://deb.debian.org/debian bookworm InRelease
- Get:2 http://deb.debian.org/debian bookworm-updates InRelease [55.4 kB]
- Get:3 http://deb.debian.org/debian-security bookworm-security InRelease [48.0 kB]
- Get:4 http://deb.debian.org/debian bookworm-updates/main amd64 Packages.diff/Index [17.3 kB]
- Get:5 http://deb.debian.org/debian bookworm-updates/main amd64 Packages T-2025-06-13-1410.14-F-2025-06-13-1410.14.pdiff [434 B]
- Get:5 http://deb.debian.org/debian bookworm-updates/main amd64 Packages T-2025-06-13-1410.14-F-2025-06-13-1410.14.pdiff [434 B]
- Get:6 http://deb.debian.org/debian-security bookworm-security/main amd64 Packages [269 kB]
- Fetched 390 kB in 1s (589 kB/s)
- Reading package lists...
- 


<><> Synchronising pinned packages ><><><><><><><><><><><><><><><><><><><><><><>
[arrayjit.dev] synchronised (file:///src)
[neural_nets_lib.dev] synchronised (file:///src)


[NOTE] Package ocaml-variants is already installed (current version is 5.3.0+options).
[NOTE] Package ocaml-config is already installed (current version is 3).
[NOTE] Package ocaml-compiler is already installed (current version is 5.3.0).
[NOTE] Package ocaml is already installed (current version is 5.3.0).
[NOTE] Package base-unix is already installed (current version is base).
[NOTE] Package base-threads is already installed (current version is base).
[NOTE] Package base-nnp is already installed (current version is base).
[NOTE] Package base-effects is already installed (current version is base).
[NOTE] Package base-domains is already installed (current version is base).
[NOTE] Package base-bigarray is already installed (current version is base).


The following system packages will first need to be installed:
libcurl4-gnutls-dev libffi-dev pkg-config zlib1g-dev


<><> Handling external dependencies <><><><><><><><><><><><><><><><><><><><><><>


+ /usr/bin/sudo "apt-get" "install" "-qq" "-yy" "libcurl4-gnutls-dev" "libffi-dev" "pkg-config" "zlib1g-dev"
- debconf: delaying package configuration, since apt-utils is not installed
- Selecting previously unselected package libcurl4-gnutls-dev:amd64.
- (Reading database ... 
(Reading database ... 5%
(Reading database ... 10%
(Reading database ... 15%
(Reading database ... 20%
(Reading database ... 25%
(Reading database ... 30%
(Reading database ... 35%
(Reading database ... 40%
(Reading database ... 45%
(Reading database ... 50%
(Reading database ... 55%
(Reading database ... 60%
(Reading database ... 65%
(Reading database ... 70%
(Reading database ... 75%
(Reading database ... 80%
(Reading database ... 85%
(Reading database ... 90%
(Reading database ... 95%
(Reading database ... 100%
(Reading database ... 18776 files and directories currently installed.)
- Preparing to unpack .../0-libcurl4-gnutls-dev_7.88.1-10+deb12u12_amd64.deb ...
- Unpacking libcurl4-gnutls-dev:amd64 (7.88.1-10+deb12u12) ...
- Selecting previously unselected package libffi-dev:amd64.
- Preparing to unpack .../1-libffi-dev_3.4.4-1_amd64.deb ...
- Unpacking libffi-dev:amd64 (3.4.4-1) ...
- Selecting previously unselected package libpkgconf3:amd64.
- Preparing to unpack .../2-libpkgconf3_1.8.1-1_amd64.deb ...
- Unpacking libpkgconf3:amd64 (1.8.1-1) ...
- Selecting previously unselected package pkgconf-bin.
- Preparing to unpack .../3-pkgconf-bin_1.8.1-1_amd64.deb ...
- Unpacking pkgconf-bin (1.8.1-1) ...
- Selecting previously unselected package pkgconf:amd64.
- Preparing to unpack .../4-pkgconf_1.8.1-1_amd64.deb ...
- Unpacking pkgconf:amd64 (1.8.1-1) ...
- Selecting previously unselected package pkg-config:amd64.
- Preparing to unpack .../5-pkg-config_1.8.1-1_amd64.deb ...
- Unpacking pkg-config:amd64 (1.8.1-1) ...
- Selecting previously unselected package zlib1g-dev:amd64.
- Preparing to unpack .../6-zlib1g-dev_1%3a1.2.13.dfsg-1_amd64.deb ...
- Unpacking zlib1g-dev:amd64 (1:1.2.13.dfsg-1) ...
- Setting up libcurl4-gnutls-dev:amd64 (7.88.1-10+deb12u12) ...
- Setting up libffi-dev:amd64 (3.4.4-1) ...
- Setting up libpkgconf3:amd64 (1.8.1-1) ...
- Setting up pkgconf-bin (1.8.1-1) ...
- Setting up zlib1g-dev:amd64 (1:1.2.13.dfsg-1) ...
- Setting up pkgconf:amd64 (1.8.1-1) ...
- Setting up pkg-config:amd64 (1.8.1-1) ...
- Processing triggers for libc-bin (2.36-9+deb12u10) ...
2025-06-29 09:21.19 ---> using "65a4093d9ec5e1bc27188613169bb57e3cec8a4b19e738403e025115112b8d64" from cache


/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(network host)
(shell "opam install $DEPS"))
[NOTE] Package ocaml-variants is already installed (current version is 5.3.0+options).
[NOTE] Package ocaml-config is already installed (current version is 3).
[NOTE] Package ocaml-compiler is already installed (current version is 5.3.0).
[NOTE] Package ocaml is already installed (current version is 5.3.0).
[NOTE] Package base-unix is already installed (current version is base).
[NOTE] Package base-threads is already installed (current version is base).
[NOTE] Package base-nnp is already installed (current version is base).
[NOTE] Package base-effects is already installed (current version is base).
[NOTE] Package base-domains is already installed (current version is base).
[NOTE] Package base-bigarray is already installed (current version is base).
The following actions will be performed:
=== install 81 packages
- install angstrom                0.16.1
- install astring                 0.8.5
- install backoff                 0.1.1
- install base                    v0.17.3
- install base-bytes              base
- install bigarray-compat         1.1.0
- install bigstringaf             0.10.0
- install camlp-streams           5.0.1
- install camlzip                 1.13
- install cmdliner                1.3.0
- install conf-libcurl            2
- install conf-libffi             2.0.0
- install conf-pkg-config         4
- install conf-zlib               1
- install cppo                    1.8.0
- install csexp                   1.5.2
- install csv                     2.4
- install ctypes                  0.23.0
- install ctypes-foreign          0.23.0
- install curl                    0.10.0
- install dune                    3.19.1
- install dune-configurator       3.19.1
- install fieldslib               v0.17.0
- install fmt                     0.10.0
- install integers                0.7.0
- install jane-street-headers     v0.17.0
- install jst-config              v0.17.0
- install logs                    0.8.0
- install mdx                     2.5.0
- install mtime                   2.1.0
- install multicore-magic         2.3.1
- install num                     1.6
- install ocaml-compiler-libs     v0.17.0
- install ocaml-syntax-shims      1.0.0
- install ocaml-version           4.0.1
- install ocaml_intrinsics_kernel v0.17.1
- install ocamlbuild              0.16.1
- install ocamlfind               1.9.8
- install parsexp                 v0.17.0
- install pprint                  20230830
- install ppx_assert              v0.17.0
- install ppx_base                v0.17.0
- install ppx_cold                v0.17.0
- install ppx_compare             v0.17.0
- install ppx_derivers            1.2.1
- install ppx_deriving            6.1.0
- install ppx_enumerate           v0.17.0
- install ppx_expect              v0.17.3
- install ppx_fields_conv         v0.17.0
- install ppx_globalize           v0.17.2
- install ppx_hash                v0.17.0
- install ppx_here                v0.17.0
- install ppx_inline_test         v0.17.1
- install ppx_minidebug           2.3.0
- install ppx_optcomp             v0.17.1
- install ppx_sexp_conv           v0.17.1
- install ppx_string              v0.17.0
- install ppx_variants_conv       v0.17.1
- install ppxlib                  0.36.0
- install ppxlib_jane             v0.17.4
- install printbox                0.12
- install printbox-ext-plot       0.12
- install printbox-html           0.12
- install printbox-md             0.12
- install printbox-text           0.12
- install ptime                   1.2.0
- install re                      1.12.0
- install result                  1.5
- install saturn_lockfree         0.5.0
- install seq                     base
- install sexplib                 v0.17.0
- install sexplib0                v0.17.0
- install stdio                   v0.17.0
- install stdlib-shims            0.3.0
- install thread-local-storage    0.2
- install time_now                v0.17.0
- install topkg                   1.0.8
- install tyxml                   4.6.0
- install uucp                    16.0.0
- install uutf                    1.0.4
- install variantslib             v0.17.0


<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved backoff.0.1.1  (cached)
-> retrieved astring.0.8.5  (cached)
-> retrieved angstrom.0.16.1  (cached)
-> retrieved base.v0.17.3  (cached)
-> retrieved bigarray-compat.1.1.0  (cached)
-> retrieved bigstringaf.0.10.0  (cached)
-> retrieved camlp-streams.5.0.1  (cached)
-> retrieved camlzip.1.13  (cached)
-> retrieved cmdliner.1.3.0  (cached)
-> retrieved cppo.1.8.0  (cached)
-> installed conf-libcurl.2
-> installed conf-pkg-config.4
-> retrieved csexp.1.5.2  (cached)
-> retrieved csv.2.4  (cached)
-> retrieved ctypes.0.23.0, ctypes-foreign.0.23.0  (cached)
-> installed conf-libffi.2.0.0
-> installed conf-zlib.1
-> retrieved curl.0.10.0  (cached)
-> retrieved fieldslib.v0.17.0  (cached)
-> retrieved integers.0.7.0  (cached)
-> retrieved fmt.0.10.0  (cached)
-> retrieved jane-street-headers.v0.17.0  (cached)
-> retrieved jst-config.v0.17.0  (cached)
-> retrieved logs.0.8.0  (cached)
-> retrieved mtime.2.1.0  (cached)
-> retrieved multicore-magic.2.3.1  (cached)
-> retrieved mdx.2.5.0  (cached)
-> retrieved num.1.6  (cached)
-> retrieved ocaml-compiler-libs.v0.17.0  (cached)
-> retrieved ocaml-syntax-shims.1.0.0  (cached)
-> retrieved ocaml-version.4.0.1  (cached)
-> retrieved ocaml_intrinsics_kernel.v0.17.1  (cached)
-> retrieved ocamlbuild.0.16.1  (cached)
-> retrieved ocamlfind.1.9.8  (cached)
-> retrieved parsexp.v0.17.0  (cached)
-> retrieved pprint.20230830  (cached)
-> retrieved ppx_assert.v0.17.0  (cached)
-> retrieved ppx_base.v0.17.0  (cached)
-> retrieved ppx_cold.v0.17.0  (cached)
-> retrieved ppx_compare.v0.17.0  (cached)
-> retrieved ppx_derivers.1.2.1  (cached)
-> retrieved ppx_deriving.6.1.0  (cached)
-> retrieved ppx_enumerate.v0.17.0  (cached)
-> retrieved ppx_fields_conv.v0.17.0  (cached)
-> retrieved ppx_expect.v0.17.3  (cached)
-> retrieved ppx_globalize.v0.17.2  (cached)
-> retrieved ppx_hash.v0.17.0  (cached)
-> retrieved ppx_here.v0.17.0  (cached)
-> retrieved dune.3.19.1, dune-configurator.3.19.1  (cached)
-> retrieved ppx_inline_test.v0.17.1  (cached)
-> retrieved ppx_minidebug.2.3.0  (cached)
-> retrieved ppx_optcomp.v0.17.1  (cached)
-> retrieved ppx_sexp_conv.v0.17.1  (cached)
-> retrieved ppx_string.v0.17.0  (cached)
-> retrieved ppx_variants_conv.v0.17.1  (cached)
-> installed cmdliner.1.3.0
-> installed num.1.6
-> retrieved ppxlib.0.36.0  (cached)
-> retrieved ppxlib_jane.v0.17.4  (cached)
-> retrieved ptime.1.2.0  (cached)
-> retrieved result.1.5  (cached)
-> retrieved re.1.12.0  (cached)
-> retrieved seq.base  (cached)
-> installed seq.base
-> retrieved saturn_lockfree.0.5.0  (cached)
-> retrieved sexplib.v0.17.0  (cached)
-> retrieved printbox.0.12, printbox-ext-plot.0.12, printbox-html.0.12, printbox-md.0.12, printbox-text.0.12  (cached)
-> retrieved sexplib0.v0.17.0  (cached)
-> retrieved stdio.v0.17.0  (cached)
-> retrieved stdlib-shims.0.3.0  (cached)
-> retrieved thread-local-storage.0.2  (cached)
-> retrieved time_now.v0.17.0  (cached)
-> retrieved topkg.1.0.8  (cached)
-> retrieved tyxml.4.6.0  (cached)
-> retrieved uutf.1.0.4  (cached)
-> retrieved variantslib.v0.17.0  (cached)
-> retrieved uucp.16.0.0  (cached)
-> installed ocamlfind.1.9.8
-> installed base-bytes.base
-> installed ocamlbuild.0.16.1
-> installed camlzip.1.13
-> installed topkg.1.0.8
-> installed uutf.1.0.4
-> installed mtime.2.1.0
-> installed fmt.0.10.0
-> installed ptime.1.2.0
-> installed astring.0.8.5
-> installed logs.0.8.0
-> installed dune.3.19.1
-> installed jane-street-headers.v0.17.0
-> installed ppx_derivers.1.2.1
-> installed backoff.0.1.1
-> installed bigarray-compat.1.1.0
-> installed stdlib-shims.0.3.0
-> installed result.1.5
-> installed csexp.1.5.2
-> installed camlp-streams.5.0.1
-> installed csv.2.4
-> installed multicore-magic.2.3.1
-> installed ocaml-version.4.0.1
-> installed ocaml_intrinsics_kernel.v0.17.1
-> installed pprint.20230830
-> installed printbox.0.12
-> installed sexplib0.v0.17.0
-> installed thread-local-storage.0.2
-> installed integers.0.7.0
-> installed re.1.12.0
-> installed cppo.1.8.0
-> installed ocaml-syntax-shims.1.0.0
-> installed ocaml-compiler-libs.v0.17.0
-> installed saturn_lockfree.0.5.0
-> installed parsexp.v0.17.0
-> installed dune-configurator.3.19.1
-> installed bigstringaf.0.10.0
-> installed sexplib.v0.17.0
-> installed angstrom.0.16.1
-> installed mdx.2.5.0
-> installed curl.0.10.0
-> installed tyxml.4.6.0
-> installed printbox-html.0.12
-> installed uucp.16.0.0
-> installed ctypes.0.23.0
-> installed printbox-text.0.12
-> installed printbox-md.0.12
-> installed printbox-ext-plot.0.12
-> installed base.v0.17.3
-> installed ctypes-foreign.0.23.0
-> installed fieldslib.v0.17.0
-> installed variantslib.v0.17.0
-> installed stdio.v0.17.0
-> installed ppxlib.0.36.0
-> installed ppx_optcomp.v0.17.1
-> installed ppxlib_jane.v0.17.4
-> installed ppx_here.v0.17.0
-> installed ppx_cold.v0.17.0
-> installed ppx_variants_conv.v0.17.1
-> installed ppx_fields_conv.v0.17.0
-> installed ppx_enumerate.v0.17.0
-> installed ppx_globalize.v0.17.2
-> installed ppx_compare.v0.17.0
-> installed ppx_deriving.6.1.0
-> installed ppx_sexp_conv.v0.17.1
-> installed ppx_hash.v0.17.0
-> installed ppx_assert.v0.17.0
-> installed ppx_minidebug.2.3.0
-> installed ppx_base.v0.17.0
-> installed jst-config.v0.17.0
-> installed ppx_string.v0.17.0
-> installed time_now.v0.17.0
-> installed ppx_inline_test.v0.17.1
-> installed ppx_expect.v0.17.3
Done.
# To update the current shell environment, run: eval $(opam env)
2025-06-29 09:21.19 ---> using "143f3b90cfc6c2d1835aefac6ce5cf0fc88d9f175c11419f1ea6995cfd77abea" from cache


/src: (copy (src .) (dst /src))
2025-06-29 09:21.20 ---> saved as "3f9b07a03ec5fcebae53a8a72c7c72dc3df958e48d053635194860b6018f916b"


/src: (run (shell "opam exec -- dune build @install @check @runtest && rm -rf _build"))
File "arrayjit/test/dune", line 6, characters 7-15:
6 |   (pps ppx_jane)))
^^^^^^^^
Error: Library "ppx_jane" not found.
-> required by
_build/default/arrayjit/test/.merlin-conf/exe-test_numerical_types
-> required by alias arrayjit/test/check
(cd _build/default/test/config && ../../arrayjit/bin/read_config.exe --read=backend)


Welcome to OCANNL! Reading configuration defaults from /src/_build/default/test/config/ocannl_config.
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
Wrote value of 'backend' to ocannl_backend.txt
File "test/einsum/test_conv_syntax.expected", line 1, characters 0-0:
/usr/bin/git --no-pager diff --no-index --color=always -u _build/default/test/einsum/test_conv_syntax.expected _build/default/test/einsum/test_conv_syntax.exe.output
diff --git a/_build/default/test/einsum/test_conv_syntax.expected b/_build/default/test/einsum/test_conv_syntax.exe.output
index 4bd5a1c..0580e1e 100644
--- a/_build/default/test/einsum/test_conv_syntax.expected
+++ b/_build/default/test/einsum/test_conv_syntax.exe.output
@@ -1,5 +1,5 @@


-Welcome to OCANNL! Reading configuration defaults from /Users/lukstafi/ocannl/_build/default/test/einsum/ocannl_config.
+Welcome to OCANNL! Reading configuration defaults from /src/_build/default/test/einsum/ocannl_config.
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
Testing conv syntax parsing...
File "test/test_print_style.expected", line 1, characters 0-0:
/usr/bin/git --no-pager diff --no-index --color=always -u _build/default/test/test_print_style.expected _build/default/test/test_print_style.exe.output
diff --git a/_build/default/test/test_print_style.expected b/_build/default/test/test_print_style.exe.output
index e51ab37..c55c8ad 100644
--- a/_build/default/test/test_print_style.expected
+++ b/_build/default/test/test_print_style.exe.output
@@ -1,5 +1,5 @@


-Welcome to OCANNL! Reading configuration defaults from /Users/lukstafi/ocannl/_build/default/test/ocannl_config.
+Welcome to OCANNL! Reading configuration defaults from /src/_build/default/test/ocannl_config.
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
Testing print_style functionality:
(cd _build/default/test_ppx && ./test_ppx_op_expected.exe)


Welcome to OCANNL! Reading configuration defaults from /src/_build/default/test_ppx/ocannl_config.
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
(cd _build/default/test_ppx && ./test_ppx_op.exe)


Welcome to OCANNL! Reading configuration defaults from /src/_build/default/test_ppx/ocannl_config.
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
Failed to delete directory log_files: (Sys_error "log_files: Directory not empty")
(cd _build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test && .tutorials.inline-tests/inline-test-runner.exe inline-test-runner tutorials -partition 'Welcome to OCANNL! Reading configuration defaults from /src/_build/.sandbox/3d3379edf8519bb24baf9682eb19e131/default/test/ocannl_config.' -source-tree-root .. -diff-cmd -)


Welcome to OCANNL! Reading configuration defaults from /src/_build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test/ocannl_config.
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
(cd _build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test && .tutorials.inline-tests/inline-test-runner.exe inline-test-runner tutorials -partition 'Retrieving commandline, environment, or config file variable ocannl_log_level' -source-tree-root .. -diff-cmd -)


Welcome to OCANNL! Reading configuration defaults from /src/_build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test/ocannl_config.
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
(cd _build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test && .tutorials.inline-tests/inline-test-runner.exe inline-test-runner tutorials -partition '' -source-tree-root .. -diff-cmd -)


Welcome to OCANNL! Reading configuration defaults from /src/_build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test/ocannl_config.
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
(cd _build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test && .tutorials.inline-tests/inline-test-runner.exe inline-test-runner tutorials -partition 'Found 0, in the config file' -source-tree-root .. -diff-cmd -)


Welcome to OCANNL! Reading configuration defaults from /src/_build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test/ocannl_config.
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
File "test/dune", lines 30-40, characters 0-281:
30 | (rule
31 |  (alias runtest)
32 |  (target
33 |   (dir log_files))
34 |  (action
35 |   (run
36 |    %{dep:micrograd_demo_logging.exe}
37 |    "--ocannl_debug_backend=text"
38 |    "--ocannl_log_file_stem=micrograd_demo_logging"
39 |    "--ocannl_log_main_domain_to_stdout=false"
40 |    "--ocannl_debug_log_to_stream_files=true")))
(cd _build/default/test && ./micrograd_demo_logging.exe --ocannl_debug_backend=text --ocannl_log_file_stem=micrograd_demo_logging --ocannl_log_main_domain_to_stdout=false --ocannl_debug_log_to_stream_files=true)


Welcome to OCANNL! Reading configuration defaults from /src/_build/default/test/ocannl_config.
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
Retrieving commandline, environment, or config file variable ocannl_backend
Found multicore_cc, in the config file
Retrieving commandline, environment, or config file variable ocannl_cd_ident_style
Not found, using default heuristic
Retrieving commandline, environment, or config file variable ocannl_ll_ident_style
Not found, using default heuristic
Retrieving commandline, environment, or config file variable ocannl_prefer_backend_uniformity
Found true, in the config file
Retrieving commandline, environment, or config file variable ocannl_debug_log_to_stream_files
Found true, commandline --ocannl_debug_log_to_stream_files=true
Retrieving commandline, environment, or config file variable ocannl_cc_backend_optimization_level
Not found, using default 3
Retrieving commandline, environment, or config file variable ocannl_cc_backend_compiler_command
Not found, using default gcc
Retrieving commandline, environment, or config file variable ocannl_never_capture_stdout
Not found, using default false
Fatal error: exception File "src/printbox-text/PrintBox_text.ml", line 212, characters 6-12: Assertion failed
Raised at PrintBox_text.Output.Make_out.to_buf_aux_ in file "src/printbox-text/PrintBox_text.ml", line 212, characters 6-50
Called from PrintBox_text.Output.Make_out.render in file "src/printbox-text/PrintBox_text.ml" (inlined), line 242, characters 21-46
Called from Stdlib__Map.Make.fold in file "map.ml", line 329, characters 19-42
Called from Stdlib__Map.Make.fold in file "map.ml" (inlined), lines 325-329, characters 17-42
Called from Stdlib__Map.Make.fold in file "map.ml", line 329, characters 26-41
Called from Stdlib__Map.Make.fold in file "map.ml" (inlined), lines 325-329, characters 17-42
Called from Stdlib__Map.Make.fold in file "map.ml", line 329, characters 26-41
Called from Stdlib__Map.Make.fold in file "map.ml" (inlined), lines 325-329, characters 17-42
Called from Stdlib__Map.Make.fold in file "map.ml", line 329, characters 26-41
Called from Stdlib__Map.Make.fold in file "map.ml" (inlined), lines 325-329, characters 17-42
Called from Stdlib__Map.Make.fold in file "map.ml", line 329, characters 26-41
Called from Stdlib__Map.Make.fold in file "map.ml" (inlined), lines 325-329, characters 17-42
Called from Stdlib__Map.Make.fold in file "map.ml", line 329, characters 26-41
Called from Stdlib__Map.Make.fold in file "map.ml" (inlined), lines 325-329, characters 17-42
Called from PrintBox_text.Output.Make_out.render in file "src/printbox-text/PrintBox_text.ml", line 242, characters 14-64
Called from PrintBox_text.Output.to_chan in file "src/printbox-text/PrintBox_text.ml" (inlined), line 269, characters 39-70
Called from PrintBox_text.output in file "src/printbox-text/PrintBox_text.ml", line 851, characters 2-31
Called from Minidebug_runtime.PrintBox.output_box in file "minidebug_runtime.ml", line 1527, characters 19-59
Called from Minidebug_runtime.PrintBox.close_log_impl.close_tree in file "minidebug_runtime.ml", line 1572, characters 6-38
Called from Backends.Add_buffer_retrieval_and_syncing.sync_routine.post in file "arrayjit/lib/backends.ml", lines 163-170, characters 13-15
Called from Ir__Task.run in file "arrayjit/lib/task.ml", line 17, characters 2-14
Re-raised at Ir__Task.run in file "arrayjit/lib/task.ml", lines 15-17, characters 20-14
Called from Dune__exe__Micrograd_demo_logging.(fun) in file "test/micrograd_demo_logging.ml", line 36, characters 2-16
Called from Utils.capture_stdout_logs in file "arrayjit/lib/utils.ml", line 825, characters 10-16
Re-raised at Utils.capture_stdout_logs in file "arrayjit/lib/utils.ml", line 856, characters 8-87
Called from Dune__exe__Micrograd_demo_logging in file "test/micrograd_demo_logging.ml", lines 35-39, characters 2-58
(cd _build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test && .tutorials.inline-tests/inline-test-runner.exe inline-test-runner tutorials -partition zero2hero_1of7.ml -source-tree-root .. -diff-cmd -)


Welcome to OCANNL! Reading configuration defaults from /src/_build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test/ocannl_config.
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
(cd _build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test && .tutorials.inline-tests/inline-test-runner.exe inline-test-runner tutorials -partition primitive_ops.ml -source-tree-root .. -diff-cmd -)


Welcome to OCANNL! Reading configuration defaults from /src/_build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test/ocannl_config.
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
(cd _build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test && .tutorials.inline-tests/inline-test-runner.exe inline-test-runner tutorials -partition hello_world_op.ml -source-tree-root .. -diff-cmd -)


Welcome to OCANNL! Reading configuration defaults from /src/_build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test/ocannl_config.
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
File "test/einsum/einsum_trivia_exec.expected", line 1, characters 0-0:
/usr/bin/git --no-pager diff --no-index --color=always -u _build/default/test/einsum/einsum_trivia_exec.expected _build/default/test/einsum/einsum_trivia_exec.exe.output
diff --git a/_build/default/test/einsum/einsum_trivia_exec.expected b/_build/default/test/einsum/einsum_trivia_exec.exe.output
index ab456b5..5c9a32c 100644
--- a/_build/default/test/einsum/einsum_trivia_exec.expected
+++ b/_build/default/test/einsum/einsum_trivia_exec.exe.output
@@ -1,5 +1,5 @@


-Welcome to OCANNL! Reading configuration defaults from /Users/lukstafi/ocannl/_build/default/test/einsum/ocannl_config.
+Welcome to OCANNL! Reading configuration defaults from /src/_build/default/test/einsum/ocannl_config.
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
HERE: test/einsum/einsum_trivia_exec.ml:31:21
@@ -735,173 +735,173 @@ HERE: test/einsum/einsum_trivia_exec.ml:269:21


HERE: test/einsum/einsum_trivia_exec.ml:298:21
-┌────────────────────────────────┐
-│[9]: ;=>+ shape 0:4,1:5,2:6,3:3 │
-│┌──────┬──────────────────┐     │
-││0 @ 0 │axis 3            │     │
-│├──────┼──────────────────┤     │
-││0 @ 1 │ 0.00  0.00  0.00 │     │
-││axis 2│ 0.00  0.00  1.00 │     │
-││      │ ...   ...   ...  │     │
-││      │ 0.00  0.00  4.00 │     │
-││      │ 0.00  0.00  5.00 │     │
-│├──────┼──────────────────┤     │
-││1 @ 1 │ 0.00  1.00  0.00 │     │
-││axis 2│ 0.00  1.00  1.00 │     │
-││      │ ...   ...   ...  │     │
-││      │ 0.00  1.00  4.00 │     │
-││      │ 0.00  1.00  5.00 │     │
-│├──────┼──────────────────┤     │
-││2 @ 1 │ 0.00  2.00  0.00 │     │
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-││      │ 0.00  2.00  5.00 │     │
-│├──────┼──────────────────┤     │
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-││      │ 0.00  3.00  5.00 │     │
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-││      │ ...   ...   ...  │     │
-││      │ 0.00  4.00  4.00 │     │
-││      │ 0.00  4.00  5.00 │     │
-│└──────┴──────────────────┘     │
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-│┌──────┬──────────────────┐     │
-││1 @ 0 │axis 3            │     │
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-││0 @ 1 │ 1.00  0.00  0.00 │     │
-││axis 2│ 1.00  0.00  1.00 │     │
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-││      │ ...   ...   ...  │     │
-││      │ 1.00  3.00  4.00 │     │
-││      │ 1.00  3.00  5.00 │     │
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-││      │ ...   ...   ...  │     │
-││      │ 1.00  4.00  4.00 │     │
-││      │ 1.00  4.00  5.00 │     │
-│└──────┴──────────────────┘     │
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-││2 @ 0 │axis 3            │     │
-│├──────┼──────────────────┤     │
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-│├──────┼──────────────────┤     │
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-││      │ 2.00  1.00  5.00 │     │
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-││      │ 2.00  4.00  4.00 │     │
-││      │ 2.00  4.00  5.00 │     │
-│└──────┴──────────────────┘     │
-├────────────────────────────────┤
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-││3 @ 0 │axis 3            │     │
-│├──────┼──────────────────┤     │
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-│├──────┼──────────────────┤     │
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-││      │ 3.00  1.00  4.00 │     │
-││      │ 3.00  1.00  5.00 │     │
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-││      │ 3.00  2.00  4.00 │     │
-││      │ 3.00  2.00  5.00 │     │
-│├──────┼──────────────────┤     │
-││3 @ 1 │ 3.00  3.00  0.00 │     │
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-││      │ 3.00  3.00  4.00 │     │
-││      │ 3.00  3.00  5.00 │     │
-│├──────┼──────────────────┤     │
-││4 @ 1 │ 3.00  4.00  0.00 │     │
-││axis 2│ 3.00  4.00  1.00 │     │
-││      │ ...   ...   ...  │     │
-││      │ 3.00  4.00  4.00 │     │
-││      │ 3.00  4.00  5.00 │     │
-│└──────┴──────────────────┘     │
-└────────────────────────────────┘
+┌────────────────────────────────────────┐
+│[9]: ;=>+ shape 0:4,1:5,2:6,3:3         │
+│┌──────┬───────────────────────────────┐│
+││0 @ 0 │axis 3                         ││
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+││axis 2│ -9.79e-12  -5.98e+3  3.09e+11 ││
+││      │ ...        ...       ...      ││
+││      │ -9.79e-12  4.20e-41  3.09e+11 ││
+││      │ -9.79e-12  4.20e-41  3.09e+11 ││
+│├──────┼───────────────────────────────┤│
+││1 @ 1 │ 3.09e+11  1.00      3.23e+21  ││
+││axis 2│ 4.20e-41  -5.98e+3  3.23e+21  ││
+││      │ ...       ...       ...       ││
+││      │ 0.00      1.00      3.23e+21  ││
+││      │ 0.00      1.00      3.23e+21  ││
+│├──────┼───────────────────────────────┤│
+││2 @ 1 │ 1.82e+22  2.00      1.27e+19  ││
+││axis 2│ 1.82e+22  -5.98e+3  1.27e+19  ││
+││      │ ...       ...       ...       ││
+││      │ 1.82e+22  2.00      1.27e+19  ││
+││      │ 1.82e+22  2.00      1.27e+19  ││
+│├──────┼───────────────────────────────┤│
+││3 @ 1 │ 1.71e+19  3.00      1.13e+24  ││
+││axis 2│ 1.71e+19  -5.98e+3  1.13e+24  ││
+││      │ ...       ...       ...       ││
+││      │ 1.71e+19  3.00      1.13e+24  ││
+││      │ 1.71e+19  3.00      1.13e+24  ││
+│├──────┼───────────────────────────────┤│
+││4 @ 1 │ 1.72e+22  4.00      3.09e+11  ││
+││axis 2│ 1.72e+22  -5.98e+3  3.09e+11  ││
+││      │ ...       ...       ...       ││
+││      │ 1.72e+22  4.00      3.09e+11  ││
+││      │ 1.72e+22  4.00      3.09e+11  ││
+│└──────┴───────────────────────────────┘│
+├────────────────────────────────────────┤
+│┌──────┬──────────────────────────────┐ │
+││1 @ 0 │axis 3                        │ │
+│├──────┼──────────────────────────────┤ │
+││0 @ 1 │ 3.09e+11  4.20e-41  0.00     │ │
+││axis 2│ 1.00      -5.98e+3  1.00     │ │
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+││      │ 1.00      1.40e-45  4.00     │ │
+││      │ 1.00      1.40e-45  5.00     │ │
+│├──────┼──────────────────────────────┤ │
+││1 @ 1 │ 3.09e+11  1.00      3.23e+21 │ │
+││axis 2│ 1.00      -5.98e+3  3.23e+21 │ │
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+││      │ 1.00      1.00      3.23e+21 │ │
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+││2 @ 1 │ 1.82e+22  2.00      1.27e+19 │ │
+││axis 2│ 1.82e+22  -5.98e+3  1.27e+19 │ │
+││      │ ...       ...       ...      │ │
+││      │ 1.82e+22  2.00      1.27e+19 │ │
+││      │ 1.82e+22  2.00      1.27e+19 │ │
+│├──────┼──────────────────────────────┤ │
+││3 @ 1 │ 1.71e+19  3.00      1.13e+24 │ │
+││axis 2│ 1.71e+19  -5.98e+3  1.13e+24 │ │
+││      │ ...       ...       ...      │ │
+││      │ 1.71e+19  3.00      1.13e+24 │ │
+││      │ 1.71e+19  3.00      1.13e+24 │ │
+│├──────┼──────────────────────────────┤ │
+││4 @ 1 │ 1.72e+22  4.00      1.55e-43 │ │
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+││      │ 1.72e+22  4.00      4.00     │ │
+││      │ 1.72e+22  4.00      5.00     │ │
+│└──────┴──────────────────────────────┘ │
+├────────────────────────────────────────┤
+│┌──────┬──────────────────────────────┐ │
+││2 @ 0 │axis 3                        │ │
+│├──────┼──────────────────────────────┤ │
+││0 @ 1 │ 3.09e+11  1.85e+25  4.12e+21 │ │
+││axis 2│ 2.00      1.85e+25  4.12e+21 │ │
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+││      │ 2.00      1.85e+25  4.12e+21 │ │
+││      │ 2.00      1.85e+25  4.12e+21 │ │
+│├──────┼──────────────────────────────┤ │
+││1 @ 1 │ 3.09e+11  1.85e+25  7.35e+21 │ │
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+││      │ 2.00      1.85e+25  7.35e+21 │ │
+││      │ 2.00      1.85e+25  7.35e+21 │ │
+│├──────┼──────────────────────────────┤ │
+││2 @ 1 │ 1.82e+22  1.85e+25  4.13e+21 │ │
+││axis 2│ 1.82e+22  1.85e+25  4.13e+21 │ │
+││      │ ...       ...       ...      │ │
+││      │ 1.82e+22  1.85e+25  4.13e+21 │ │
+││      │ 1.82e+22  1.85e+25  4.13e+21 │ │
+│├──────┼──────────────────────────────┤ │
+││3 @ 1 │ 1.71e+19  1.85e+25  1.13e+24 │ │
+││axis 2│ 1.71e+19  1.85e+25  1.13e+24 │ │
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+││      │ 1.71e+19  1.85e+25  1.13e+24 │ │
+││      │ 1.71e+19  1.85e+25  1.13e+24 │ │
+│├──────┼──────────────────────────────┤ │
+││4 @ 1 │ 1.72e+22  1.85e+25  4.12e+21 │ │
+││axis 2│ 1.72e+22  1.85e+25  4.12e+21 │ │
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+││      │ 1.72e+22  1.85e+25  4.12e+21 │ │
+││      │ 1.72e+22  1.85e+25  4.12e+21 │ │
+│└──────┴──────────────────────────────┘ │
+├────────────────────────────────────────┤
+│┌──────┬──────────────────────────────┐ │
+││3 @ 0 │axis 3                        │ │
+│├──────┼──────────────────────────────┤ │
+││0 @ 1 │ 3.09e+11  2.89e+32  3.31e+24 │ │
+││axis 2│ 3.00      2.89e+32  3.31e+24 │ │
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+││      │ 3.00      2.89e+32  3.31e+24 │ │
+││      │ 3.00      2.89e+32  3.31e+24 │ │
+│├──────┼──────────────────────────────┤ │
+││1 @ 1 │ 3.09e+11  2.89e+32  3.31e+24 │ │
+││axis 2│ 3.00      2.89e+32  3.31e+24 │ │
+││      │ ...       ...       ...      │ │
+││      │ 3.00      2.89e+32  3.31e+24 │ │
+││      │ 3.00      2.89e+32  3.31e+24 │ │
+│├──────┼──────────────────────────────┤ │
+││2 @ 1 │ 1.82e+22  2.89e+32  3.31e+24 │ │
+││axis 2│ 1.82e+22  2.89e+32  3.31e+24 │ │
+││      │ ...       ...       ...      │ │
+││      │ 1.82e+22  2.89e+32  3.31e+24 │ │
+││      │ 1.82e+22  2.89e+32  3.31e+24 │ │
+│├──────┼──────────────────────────────┤ │
+││3 @ 1 │ 1.71e+19  2.89e+32  4.44e+24 │ │
+││axis 2│ 1.71e+19  2.89e+32  4.44e+24 │ │
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+││      │ 1.71e+19  2.89e+32  4.44e+24 │ │
+││      │ 1.71e+19  2.89e+32  4.44e+24 │ │
+│├──────┼──────────────────────────────┤ │
+││4 @ 1 │ 1.72e+22  2.89e+32  3.31e+24 │ │
+││axis 2│ 1.72e+22  2.89e+32  3.31e+24 │ │
+││      │ ...       ...       ...      │ │
+││      │ 1.72e+22  2.89e+32  3.31e+24 │ │
+││      │ 1.72e+22  2.89e+32  3.31e+24 │ │
+│└──────┴──────────────────────────────┘ │
+└────────────────────────────────────────┘


HERE: test/einsum/einsum_trivia_exec.ml:299:21
-┌───────────────────────────┐
-│[1]: =>_ti shape 0:4,1:3   │
-│┌──────┬──────────────────┐│
-││      │axis 1            ││
-│├──────┼──────────────────┤│
-││axis 0│ 0.00  0.00  0.00 ││
-││      │ 1.00  0.00  0.00 ││
-││      │ 2.00  0.00  0.00 ││
-││      │ 3.00  0.00  0.00 ││
-│└──────┴──────────────────┘│
-└───────────────────────────┘
+┌───────────────────────────────────┐
+│[1]: =>_ti shape 0:4,1:3           │
+│┌──────┬──────────────────────────┐│
+││      │axis 1                    ││
+│├──────┼──────────────────────────┤│
+││axis 0│ 0.00  4.20e-41  3.09e+11 ││
+││      │ 1.00  1.40e-45  0.00     ││
+││      │ 2.00  1.85e+25  4.12e+21 ││
+││      │ 3.00  2.89e+32  3.31e+24 ││
+│└──────┴──────────────────────────┘│
+└───────────────────────────────────┘


HERE: test/einsum/einsum_trivia_exec.ml:300:21
-┌───────────────────────────┐
-│[7]: =>_tk shape 0:6,1:3   │
-│┌──────┬──────────────────┐│
-││      │axis 1            ││
-│├──────┼──────────────────┤│
-││axis 0│ 0.00  0.00  0.00 ││
-││      │ 0.00  0.00  1.00 ││
-││      │ ...   ...   ...  ││
-││      │ 0.00  0.00  4.00 ││
-││      │ 0.00  0.00  5.00 ││
-│└──────┴──────────────────┘│
-└───────────────────────────┘
+┌───────────────────────────────────┐
+│[7]: =>_tk shape 0:6,1:3           │
+│┌──────┬──────────────────────────┐│
+││      │axis 1                    ││
+│├──────┼──────────────────────────┤│
+││axis 0│ 3.09e+11  4.20e-41  0.00 ││
+││      │ 4.20e-41  -5.98e+3  1.00 ││
+││      │ ...       ...       ...  ││
+││      │ 0.00      0.00      4.00 ││
+││      │ 0.00      0.00      5.00 ││
+│└──────┴──────────────────────────┘│
+└───────────────────────────────────┘


HERE: test/einsum/einsum_trivia_exec.ml:323:21
(cd _build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test && .tutorials.inline-tests/inline-test-runner.exe inline-test-runner tutorials -partition einsum_trivia.ml -source-tree-root .. -diff-cmd -)


Welcome to OCANNL! Reading configuration defaults from /src/_build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test/ocannl_config.
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
File "test/einsum/moons_demo_variant.expected", line 1, characters 0-0:
/usr/bin/git --no-pager diff --no-index --color=always -u _build/default/test/einsum/moons_demo_variant.expected _build/default/test/einsum/moons_demo_variant.exe.output
diff --git a/_build/default/test/einsum/moons_demo_variant.expected b/_build/default/test/einsum/moons_demo_variant.exe.output
index 68171df..5c72f1d 100644
--- a/_build/default/test/einsum/moons_demo_variant.expected
+++ b/_build/default/test/einsum/moons_demo_variant.exe.output
@@ -1,57 +1,52 @@


-Welcome to OCANNL! Reading configuration defaults from /Users/lukstafi/ocannl/_build/default/test/einsum/ocannl_config.
+Welcome to OCANNL! Reading configuration defaults from /src/_build/default/test/einsum/ocannl_config.
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
Half-moons scatterplot and decision boundary:
┌────────────────────────────────────────────────────────────────────────────────────────────────────┐
-│****************************#***********************************************************************│
-│****************************###***###***#***********************************************************│
-│***************************#********#***#**********************************************************.│
-│********************#*********************##*#*#************************************************....│
-│******************#***#*****##*#*#*#****#*#*#*##**********************************************......│
-│**************#*#**###**#*##**##********#**#****###**#*************************************.........│
-│***********#***##***#**##*****************#*#*##*###*************************************...........│
-│***************#**###******************************##*#********************************.............│
-│*************#*****#******************************#*#***#*#*************************................│
-│*********#***#************************************##*###**#***********************..................│
-│******#***#*#*#******************************************#*#*******************.....................│
-│*****###****#*******************************************#********************.......................│
-│*******#*###***********************************************#*#************..........................│
-│**********##**********************%%*********************#**##**********............................│
-│*****#***#**********************%**%%********************************.............................%.│
-│**####*************************%**%**************************##*#**............................%...%│
-│****#**************************%%**%*************************#*#*..............................%....│
-│*#****##************************%*...%*********************##*..#...........................%...%%..│
-│****#*#***********************.%..%.%........................#..#.............................%.%...│
-│##*##*********************.......%.............................#.##.........................%.%.%%%.│
-│**#####*****************.......%...%%.......................................................%..%.%..│
-│**********************...........%.%.%%.....................#.#.#.#.............................%%..│
-│***##****************............%..%..%........................#.#.........................%...%...│
-│##**#**************................%...%.....................#..###......................%.%%.......│
-│###***************...............%.%.%...........................##............................%....│
-│**##************.................................................#......................%%.%..%.....│
-│**#************....................%%...........................##......................%%.%........│
-│**************........................%......................#..#...........................%.......│
-│************........................%%.%.......................##.....................%..%..........│
-│***********............................%%..............................................%%.%%........│
-│**********.............................%...%............................................%%%.........│
-│********...................................%..%....................................%.....%..........│
-│*******.................................%%..%.%................................%.%.%.%%.............│
-│******.....................................%%.%...%%.%.......................%%%....%.%.%...........│
-│*****....................................%.....%.%..%....................%.....%%.%.%...............│
-│***.........................................%%...%.%%%%..%.......%.........%%.%%....................│
-│**................................................%..%.......%..%%%%...%.%..%.%.....................│
-│*..................................................%.%.%............%..%...%........................│
-│..................................................%....%.%......%%...%.%............................│
-│..........................................................%..%......%%%.............................│
+│..............................#.....................................................................│
+│...........................#......#.....#...........................................................│
+│....................................................................................................│
+│...................#.......#.#...#......#......#....................................................│
+│..................#...##.................#....#.....................................................│
+│....................#........#.#........##...........#..............................................│
+│....................................................................................................│
+│....................................................#...............................................│
+│............#..........................................#............................................│
+│..................................................#...#..#.#........................................│
+│.............#..........................................#...........................................│
+│.........#..........................................................................................│
+│...........#................................................#.......................................│
+│....#....##.......................%.........................#.......................................│
+│....#...#...................................................#.....................................%.│
+│..#.#............................%............................#....................................%│
+│................................%...............................................................%...│
+│......#.............................................................................................│
+│#...#...........................%..............................#....................................│
+│..................................................................................................%.│
+│..##.#.........................%...............................................................%.%..│
+│................................%............................#..#...............................%...│
+│................................%..........................................................%%.......│
+│##...............................................................#..........................%.......│
+│................................................................#...................................│
+│.........................................................................................%.%........│
+│.#.................................%.............................#..................................│
+│...........................................................................................%........│
+│....................................%..%.................................................%..........│
+│.......................................................................................%..%.........│
+│......................................%%................................................%...........│
+│...........................................%..%.....................................................│
+│............................................%.......................................%...............│
+│...................................................%..................................%.............│
+│.........................................%..............................%...........%...............│
+│................................................%...%...%.......%..........%..%%....................│
+│.............................................................%..%.%....%.%..........................│
+│.......................................................%............%..%............................│
+│.....................................................................%..............................│
+│.............................................................%......%%..............................│
└────────────────────────────────────────────────────────────────────────────────────────────────────┘Loss:
┌────────┬────────────────────────────────────────────────────────────────────────────────────────────────────┐
-│ 3.79e+1│-                                                                                                   │
-│        │                                                                                                    │
-│        │                                                                                                    │
-│        │                                                                                                    │
-│        │                                                                                                    │
-│        │                                                                                                    │
+│ 2.92e+6│   -                                                 -                                              │
│        │                                                                                                    │
│        │                                                                                                    │
│        │                                                                                                    │
@@ -61,67 +56,113 @@ Half-moons scatterplot and decision boundary:
│        │                                                                                                    │
│        │                                                                                                    │
│        │                                                                                                    │
+│        │                       -                                                 -                          │
│        │                                                                                                    │
│        │                                                                                                    │
+│        │                            -                                                 -                     │
+│        │ -                -                                -                -                               │
+│        │             -                                                 -                                    │
+│        │                                                -                                                 - │
│        │                                                                                                    │
│l       │                                                                                                    │
-│o       │                                                                                                    │
-│s       │                                                                                                    │
-│s       │                                                                                                    │
-│        │                                                                                                    │
-│        │                                                                                                    │
+│o       │                                              -                                                 -   │
+│s       │                                         -                                                 -        │
+│s       │                                   -       -                                         -       -      │
+│        │                                               -                                                 -  │
+│        │                                                                                                    │
+│        │                                          -                                                 -       │
+│        │        -                -      -                         -                -      -                 │
+│        │                                      -                                                 -           │
+│        │      -         -             -      -                  -         -             -      -            │
+│        │                               -    -                                            -    -             │
+│        │                                                                                                    │
+│        │                                                                                                    │
+│        │                                                                                                    │
+│        │                     -     -                                           -     -                      │
+│        │           -          -   -                                  -          -   -                       │
+│        │                                 -                                                 -                │
+│        │                                        -                                                 -         │
+│        │-    -                                            -    -                                            │
+│        │  -    -  -         -                               -    -  -         -                             │
+│        │                 -                           -                     -                           -    │
+│ 1.99e+5│            -  -                                              -  -                                  │
+├────────┼────────────────────────────────────────────────────────────────────────────────────────────────────┤
+│        │0.00                                                                                         7.90e+1│
+│        │                                                step                                                │
+└────────┴────────────────────────────────────────────────────────────────────────────────────────────────────┘Log-loss, for better visibility:
+┌────────┬────────────────────────────────────────────────────────────────────────────────────────────────────┐
+│ 1.48e+1│   -                                                 -                                              │
│        │                                                                                                    │
│        │                                                                                                    │
│        │                                                                                                    │
+│        │                       -                                                 -                          │
+│        │                            -                                                 -                     │
+│        │ -                -                                -                -                               │
+│        │             -                                  -              -                                  - │
│        │                                                                                                    │
+│        │                                              -                                                 -   │
+│        │                                         - -                                               - -      │
+│        │                                   -           -                                     -           -  │
│        │                                                                                                    │
+│        │                                          -                                                 -       │
+│        │        -                -      -     -                   -                -      -     -           │
+│        │      -         -             -      -                  -         -             -      -            │
+│l       │                               -    -                                            -    -             │
+│o       │                                                                                                    │
+│g       │                                                                                                    │
│        │                                                                                                    │
-│        │ -                                                                                                  │
+│l       │                                                                                                    │
+│o       │                     -     -                                           -     -                      │
+│s       │                      -   -                                             -   -                       │
+│s       │           -                     -                           -                     -                │
│        │                                                                                                    │
+│        │                                        -                                                 -         │
│        │                                                                                                    │
│        │                                                                                                    │
+│        │     -                                                 -                                            │
+│        │-                                                 -                                                 │
+│        │                    -                                                 -                             │
+│        │  -    -                                            -    -                                          │
+│        │          -                                                 -                                       │
│        │                                                                                                    │
+│        │                 -                           -                     -                           -    │
│        │                                                                                                    │
│        │                                                                                                    │
+│        │            -                                                 -                                     │
│        │                                                                                                    │
-│        │  -       -    -                          -                                                         │
-│ 0.00   │   - ----  ---  --- ---- ---- ---- ---- -- - ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- │
+│ 1.22e+1│               -                                                 -                                  │
├────────┼────────────────────────────────────────────────────────────────────────────────────────────────────┤
│        │0.00                                                                                         7.90e+1│
│        │                                                step                                                │
-└────────┴────────────────────────────────────────────────────────────────────────────────────────────────────┘Log-loss, for better visibility:
+└────────┴────────────────────────────────────────────────────────────────────────────────────────────────────┘
+Learning rate:
┌─────────┬────────────────────────────────────────────────────────────────────────────────────────────────────┐
-│ 3.63    │-                                                                                                   │
+│ 1.85e-17│                                                                                                    │
│         │                                                                                                    │
│         │                                                                                                    │
│         │                                                                                                    │
-│         │ -                                                                                                  │
│         │                                                                                                    │
│         │                                                                                                    │
│         │                                                                                                    │
│         │                                                                                                    │
-│         │  -                                                                                                 │
-│         │                                          -                                                         │
-│         │          -    -                                                                            -       │
-│         │   - -           -                                                 -                                │
-│         │       --  -      - - -   -   - -            --           -  -   -  -       -                  --   │
-│         │      -     -   -      -   -   -    -             --        -         - --   -  - -   -             │
-│         │                                 -                  -                            -                  │
-│l        │             -       -               -  --                                         -                │
-│o        │                                                         -                             -            │
-│g        │                                      -                                              -     -     -  │
-│         │                                   -           -                              -                     │
-│l        │                         -                                    --                                    │
-│o        │                                           -                      -        -                        │
-│s        │                                                     -                                              │
-│s        │                                                       -                                            │
-│         │                                                                       -                            │
│         │                                                                                                    │
│         │                                                                                                    │
│         │                                                                                                    │
│         │                                                                                                    │
│         │                                                                                                    │
+│l        │                                                                                                    │
+│e        │                                                                                                    │
+│a        │                                                                                                    │
+│r        │                                                                                                    │
+│n        │                                                                                                    │
+│i        │                                                                                                    │
+│n        │                                                                                                    │
+│g        │                                                                                                    │
│         │                                                                                                    │
+│r        │                                                                                                    │
+│a        │
+│t        │                                                                                                    │
+│e        │                                                                                                    │
│         │                                                                                                    │
│         │                                                                                                    │
│         │                                                                                                    │
@@ -130,53 +171,12 @@ Half-moons scatterplot and decision boundary:
│         │                                                                                                    │
│         │                                                                                                    │
│         │                                                                                                    │
-│ -1.00e+1│                            -                   -       -                               - -  -    - │
-├─────────┼────────────────────────────────────────────────────────────────────────────────────────────────────┤
-│         │0.00                                                                                         7.90e+1│
-│         │                                                step                                                │
-└─────────┴────────────────────────────────────────────────────────────────────────────────────────────────────┘
-Learning rate:
-┌─────────┬────────────────────────────────────────────────────────────────────────────────────────────────────┐
-│ -1.01e-1│                                                                                                  - │
-│         │                                                                                                --  │
-│         │                                                                                             - -    │
-│         │                                                                                           --       │
-│         │                                                                                        - -         │
-│         │                                                                                      --            │
-│         │                                                                                   - -              │
-│         │                                                                                 --                 │
-│         │                                                                              - -                   │
-│         │                                                                            --                      │
-│         │                                                                         - -                        │
-│         │                                                                       --                           │
-│         │                                                                    - -                             │
-│l        │                                                                  --                                │
-│e        │                                                               - -                                  │
-│a        │                                                             --                                     │
-│r        │                                                          - -                                       │
-│n        │                                                        --                                          │
-│i        │                                                     - -                                            │
-│n        │                                                   --                                               │
-│g        │                                                - -                                                 │
-│         │                                              --                                                    │
-│r        │                                           - -                                                      │
-│a        │                                         --                                                         │
-│t        │                                      - -                                                           │
-│e        │                                    --                                                              │
-│         │                                 - -                                                                │
-│         │                               --                                                                   │
-│         │                            - -                                                                     │
-│         │                          --                                                                        │
-│         │                       - -                                                                          │
-│         │                     --                                                                             │
-│         │                  - -                                                                               │
-│         │                --                                                                                  │
-│         │             - -                                                                                    │
-│         │           --                                                                                       │
-│         │        - -                                                                                         │
-│         │      --                                                                                            │
-│         │   - -                                                                                              │
-│ -2.00e-1│---                                                                                                 │
+│         │                                                                                                    │
+│         │                                                                                                    │
+│         │                                                                                                    │
+│         │                                                                                                    │
+│         │                                                                                                    │
+│ 1.85e-17│---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- │
├─────────┼────────────────────────────────────────────────────────────────────────────────────────────────────┤
│         │0.00                                                                                         7.90e+1│
│         │                                                step                                                │
(cd _build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test && .tutorials.inline-tests/inline-test-runner.exe inline-test-runner tutorials -partition micrograd_demo.ml -source-tree-root .. -diff-cmd -)


Welcome to OCANNL! Reading configuration defaults from /src/_build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test/ocannl_config.
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
File "test/dune", line 4, characters 7-30:
4 |  (name moons_demo_parallel_run)
^^^^^^^^^^^^^^^^^^^^^^^
(cd _build/default/test && ./moons_demo_parallel_run.exe)


Welcome to OCANNL! Reading configuration defaults from /src/_build/default/test/ocannl_config.
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
("Set log_level to" 1)
└─{orphaned from #24}
Retrieving commandline, environment, or config file variable ocannl_backend
Found multicore_cc, in the config file
Properties of devices:
(multicore_devices
(device ((device_name CPU) (device_ordinal 0) (num_domains 72))))
@!Retrieving commandline, environment, or config file variable ocannl_prefer_backend_uniformity
Found true, in the config file
Retrieving commandline, environment, or config file variable ocannl_debug_log_to_stream_files
Not found, using default false
Retrieving commandline, environment, or config file variable ocannl_ll_ident_style
Not found, using default heuristic
Retrieving commandline, environment, or config file variable ocannl_cc_backend_optimization_level
Not found, using default 3
Retrieving commandline, environment, or config file variable ocannl_cc_backend_compiler_command
Not found, using default gcc
Fatal error: exception (Option.value_exn arrayjit/lib/backends.ml:296:28)
Raised at Base__Error.raise in file "src/error.ml" (inlined), line 9, characters 21-37
Called from Base__Option.value_exn in file "src/option.ml", line 119, characters 4-21
Called from Backends.Add_device.link_batch in file "arrayjit/lib/backends.ml", line 296, characters 5-44
Called from Backends.Raise_backend.link_batch in file "arrayjit/lib/backends.ml", line 489, characters 30-81
Called from Ocannl__Train.parallel_update.(fun) in file "lib/train.ml", line 273, characters 15-96
Re-raised at Ocannl__Train.parallel_update.(fun) in file "lib/train.ml", lines 271-273, characters 10-97
Re-raised at Ocannl__Train.parallel_update.(fun) in file "lib/train.ml", lines 269-274, characters 23-18
Called from Base__Array0.mapi in file "src/array0.ml", line 142, characters 24-46
Called from Ocannl__Train.parallel_update in file "lib/train.ml", lines 269-274, characters 4-18
Re-raised at Ocannl__Train.parallel_update in file "lib/train.ml", lines 266-274, characters 2-18
Re-raised at Ocannl__Train.parallel_update in file "lib/train.ml", lines 233-320, characters 32-69
Called from Ocannl__Train.example_train_loop in file "lib/train.ml", lines 419-429, characters 4-39
Called from Dune__exe__Moons_demo_parallel_run.main in file "test/moons_demo_parallel_run.ml", lines 65-69, characters 4-8
Called from Base__Exn.protectx in file "src/exn.ml", line 79, characters 8-11
Re-raised at Base__Exn.raise_with_original_backtrace in file "src/exn.ml", line 59, characters 2-50
Called from Base__Exn.protect in file "src/exn.ml" (inlined), line 92, characters 26-49
Called from Dune__exe__Moons_demo_parallel_run in file "test/moons_demo_parallel_run.ml", line 90, characters 2-53
(cd _build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test && .tutorials.inline-tests/inline-test-runner.exe inline-test-runner tutorials -partition moons_demo_parallel.ml -source-tree-root .. -diff-cmd -)


Welcome to OCANNL! Reading configuration defaults from /src/_build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test/ocannl_config.
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
File "test/zero2hero_1of7.ml", line 1, characters 0-0:
/usr/bin/git --no-pager diff --no-index --color=always -u _build/default/test/zero2hero_1of7.ml _build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test/zero2hero_1of7.ml.corrected
diff --git a/_build/default/test/zero2hero_1of7.ml b/_build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test/zero2hero_1of7.ml.corrected
index 61f11e7..33aca48 100644
--- a/_build/default/test/zero2hero_1of7.ml
+++ b/_build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test/zero2hero_1of7.ml.corrected
@@ -30,24 +30,24 @@ let%expect_test "Graph drawing recompile" =
Tensor.print_tree ~with_grad:true ~depth:9 f_nd;
[%expect
{|
-                                 #15 +_f_nd
-                                  6.00e+1
-                                 #16 grad_+_f_nd Virt/30
-                                 <void>
-                            #13 - Virt/152                             │#2 5. Virt/40
-                            <void>                                     │<void>
-                            #14 grad_- Virt/30                         │
-                            <void>                                     │
-           #11 *. Virt/152            │       #4 *. Virt/152           │
-           <void>                     │       <void>                   │
-           #12 grad_*. Virt/30        │       #5 grad_*. Virt/30       │
-           <void>                     │       <void>                   │
-    #10 3. Virt/40│#7 **. Virt/152    │#3 4. Virt/40│#0 x              │
-    <void>        │<void>             │<void>       │ 5.00             │
-                  │#8 grad_**. Virt/30│             │#1 grad_x Local/30│
-                  │<void>             │             │<void>            │
-                  │[0]│ #6 2. Virt/40 │             │                  │
-                  │   │ <void>        │             │                  │
+                                  #15 +_f_nd
+                                   6.00e+1
+                                  #16 grad_+_f_nd Virt/30
+                                  <void>
+                              #13 - Virt/40                               │#2 5. Virt/40
+                              <void>                                      │<void>
+                              #14 grad_- Virt/30                          │
+                              <void>                                      │
+           #11 *. Virt/40             │        #4 *. Virt/40              │
+           <void>                     │        <void>                     │
+           #12 grad_*. Virt/30        │        #5 grad_*. Virt/30         │
+           <void>                     │        <void>                     │
+    #10 3. Virt/40│#7 **. Virt/40     │#3 4. Virt/40│#0 x                 │
+    <void>        │<void>             │<void>       │ 5.00                │
+                  │#8 grad_**. Virt/30│             │#1 grad_x Local/26030│
+                  │<void>             │             │<void>               │
+                  │[0]│ #6 2. Virt/40 │             │                     │
+                  │   │ <void>        │             │                     │
|}];
let%op f = (3 *. ("x" [ 5 ] **. 2)) - (4 *. x) + 5 in
Train.every_non_literal_on_host f;
@@ -94,54 +94,21 @@ let%expect_test "Graph drawing recompile" =
[ Scatterplot { points = Array.zip_exn xs ys; content = PrintBox.line "#" } ]
in
PrintBox_text.output Stdio.stdout plot_box;
-  [%expect
-    {|
-    ┌────────┬────────────────────────────────────────────────────────────────────────────────────────────────────┐
-    │ 1.00e+2│#                                                                                                   │
-    │        │                                                                                                    │
-    │        │                                                                                                    │
-    │        │                                                                                                    │
-    │        │                                                                                                    │
-    │        │                                                                                                    │
-    │        │                                                                                                    │
-    │        │                                                                                                    │
-    │        │                                                                                                    │
-    │        │                                                                                                    │
-    │        │                                                                                                    │
-    │        │                                                                                                    │
-    │        │                                                                                                    │
-    │        │           #                                                                                        │
-    │        │                                                                                                    │
-    │        │                                                                                                    │
-    │        │                                                                                                    │
-    │        │                                                                                                    │
-    │f       │                                                                                                    │
-    │(       │                                                                                                    │
-    │x       │                                                                                                    │
-    │)       │                                                                                                    │
-    │        │                                                                                                    │
-    │        │                      #                                                                             │
-    │        │                                                                                                    │
-    │        │                                                                                                    │
-    │        │                                                                                                   #│
-    │        │                                                                                                    │
-    │        │                                                                                                    │
-    │        │                                                                                                    │
-    │        │                                                                                                    │
-    │        │                                 #                                                                  │
-    │        │                                                                                                    │
-    │        │                                                                                        #           │
-    │        │                                                                                                    │
-    │        │                                                                                                    │
-    │        │                                            #                                                       │
-    │        │                                                                             #                      │
-    │        │                                                                                                    │
-    │ 4.00   │                                                       #          #                                 │
-    ├────────┼────────────────────────────────────────────────────────────────────────────────────────────────────┤
-    │        │-5.00                                                                                           4.00│
-    │        │                                                 x                                                  │
-    └────────┴────────────────────────────────────────────────────────────────────────────────────────────────────┘
-    |}]
+  [%expect.unreachable]
+[@@expect.uncaught_exn {|
+  (* CR expect_test_collector: This test expectation appears to contain a backtrace.
+     This is strongly discouraged as backtraces are fragile.
+     Please change this test to not include a backtrace. *)
+  (Invalid_argument
+    "Tnode.update_memory_mode: update 410 -> 412 inconsistent for x")
+  Raised at Stdlib.invalid_arg in file "stdlib.ml", line 30, characters 20-45
+  Called from Base__Set.Accessors.iter in file "src/set.ml" (inlined), line 1193, characters 18-38
+  Called from Ocannl__Train.to_routine in file "lib/train.ml", line 350, characters 17-83
+  Called from Tutorials__Zero2hero_1of7.(fun) in file "test/zero2hero_1of7.ml", lines 84-86, characters 10-69
+  Called from Base__Array0.map in file "src/array0.ml", line 130, characters 24-44
+  Called from Tutorials__Zero2hero_1of7.(fun) in file "test/zero2hero_1of7.ml", lines 81-90, characters 4-15
+  Called from Ppx_expect_runtime__Test_block.Configured.dump_backtrace in file "runtime/test_block.ml", line 142, characters 10-28
+  |}]


let%expect_test "Graph drawing fetch" =
Tensor.unsafe_reinitialize ();
@@ -273,22 +240,22 @@ let%expect_test "Simple gradients hosted" =
Tensor.print_tree ~spy:true ~with_grad:true ~depth:9 l;
[%expect
{|
-                                        #12 *._l Host&stream/41
-                                        <not-in-yet>
-                                        #13 grad_*._l Host&stream/41
-                                        <not-in-yet>
-                            #8 +_d Host&stream/41                             │#10 f Host&shared/39
-                            <not-in-yet>                                      │<not-in-yet>
-                            #9 grad_+_d Host&stream/41                        │#11 grad_f Host&stream/41
-                            <not-in-yet>                                      │<not-in-yet>
-               #4 *._e Host&stream/41                │#6 c Host&shared/39     │
-               <not-in-yet>                          │<not-in-yet>            │
-               #5 grad_*._e Host&stream/41           │#7 grad_c Host&stream/41│
-               <not-in-yet>                          │<not-in-yet>            │
-    #0 a Host&shared/39     │#2 b Host&shared/39     │                        │
-    <not-in-yet>            │<not-in-yet>            │                        │
-    #1 grad_a Host&stream/41│#3 grad_b Host&stream/41│                        │
-    <not-in-yet>            │<not-in-yet>            │                        │
+                                         #12 *._l Host&stream/410
+                                         <not-in-yet>
+                                         #13 grad_*._l Host&stream/410
+                                         <not-in-yet>
+                             #8 +_d Host&stream/410                              │#10 f Host&stream/410
+                             <not-in-yet>                                        │<not-in-yet>
+                             #9 grad_+_d Host&stream/410                         │#11 grad_f Host&stream/410
+                             <not-in-yet>                                        │<not-in-yet>
+               #4 *._e Host&stream/410                 │#6 c Host&stream/410     │
+               <not-in-yet>                            │<not-in-yet>             │
+               #5 grad_*._e Host&stream/410            │#7 grad_c Host&stream/410│
+               <not-in-yet>                            │<not-in-yet>             │
+    #0 a Host&stream/410     │#2 b Host&stream/410     │                         │
+    <not-in-yet>             │<not-in-yet>             │                         │
+    #1 grad_a Host&stream/410│#3 grad_b Host&stream/410│                         │
+    <not-in-yet>             │<not-in-yet>             │                         │
|}];
(* Do not update the params: all values and gradients will be at initial points, which are
specified in the tensor in the brackets. *)
@@ -325,15 +292,15 @@ let%expect_test "Simple gradients hosted" =
#13 grad_*._l
1.00
#8 +_d              │#10 f
-              4.00               │ -2.40
+              4.00               │ -2.00
#9 grad_+_d         │#11 grad_f
-2.00              │ 4.00
#4 *._e         │#6 c     │
-        -6.00          │ 1.02e+1 │
+        -6.00          │ 1.00e+1 │
#5 grad_*._e    │#7 grad_c│
-2.00          │ -2.00   │
#0 a     │#2 b     │         │
-     1.40    │ -2.60   │         │
+     2.00    │ -3.00   │         │
#1 grad_a│#3 grad_b│         │
6.00    │ -4.00   │         │
|}];
@@ -345,21 +312,21 @@ let%expect_test "Simple gradients hosted" =
[%expect
{|
#12 *._l
-                  -1.57e+1
+                  -8.00
#13 grad_*._l
1.00
#8 +_d              │#10 f
-              6.56               │ -2.40
+              4.00               │ -2.00
#9 grad_+_d         │#11 grad_f
-              -2.40              │ 6.56
+              -2.00              │ 4.00
#4 *._e         │#6 c     │
-        -3.64          │ 1.02e+1 │
+        -6.00          │ 1.00e+1 │
#5 grad_*._e    │#7 grad_c│
-        -2.40          │ -2.40   │
+        -2.00          │ -2.00   │
#0 a     │#2 b     │         │
-     1.40    │ -2.60   │         │
+     2.00    │ -3.00   │         │
#1 grad_a│#3 grad_b│         │
-     6.24    │ -3.36   │         │
+     6.00    │ -4.00   │         │
|}]


let%expect_test "Simple gradients virtual" =
@@ -381,21 +348,21 @@ let%expect_test "Simple gradients virtual" =
Tensor.print_tree ~spy:true ~with_grad:true ~depth:9 l;
[%expect
{|
-                                       #12 *._l Host&dev/41
+                                       #12 *._l Host&dev/412
<not-in-yet>
#13 grad_*._l unknown
<not-in-yet>
#8 +_d unknown                              │#10 f Host-non-const/24
<not-in-yet>                                │<not-in-yet>
-                            #9 grad_+_d unknown                         │#11 grad_f Material/28
+                            #9 grad_+_d unknown                         │#11 grad_f Non-virt/26
<not-in-yet>                                │<not-in-yet>
#4 *._e unknown                  │#6 c Host-non-const/24│
<not-in-yet>                     │<not-in-yet>          │
-                #5 grad_*._e unknown             │#7 grad_c Material/28 │
+                #5 grad_*._e unknown             │#7 grad_c Non-virt/26 │
<not-in-yet>                     │<not-in-yet>          │
#0 a Host-non-const/24│#2 b Host-non-const/24│                      │
<not-in-yet>          │<not-in-yet>          │                      │
-    #1 grad_a Material/28 │#3 grad_b Material/28 │                      │
+    #1 grad_a Non-virt/26 │#3 grad_b Non-virt/26 │                      │
<not-in-yet>          │<not-in-yet>          │                      │
|}];
let grad_routine = Train.to_routine (module Backend) ctx IDX.empty grad in
@@ -403,22 +370,22 @@ let%expect_test "Simple gradients virtual" =
Tensor.print_tree ~spy:true ~with_grad:true ~depth:9 l;
[%expect
{|
-                                        #12 *._l Host&stream/41
-                                        <not-in-yet>
-                                        #13 grad_*._l Virt/40
-                                        <not-in-yet>
-                              #8 +_d Local/46                              │#10 f Host&shared/39
-                              <not-in-yet>                                 │<not-in-yet>
-                              #9 grad_+_d Virt/40                          │#11 grad_f Dev-stream/41
-                              <not-in-yet>                                 │<not-in-yet>
-                 #4 *._e Virt/152                  │#6 c Host&shared/39    │
-                 <not-in-yet>                      │<not-in-yet>           │
-                 #5 grad_*._e Virt/40              │#7 grad_c Dev-stream/41│
-                 <not-in-yet>                      │<not-in-yet>           │
-    #0 a Host&shared/39    │#2 b Host&shared/39    │                       │
-    <not-in-yet>           │<not-in-yet>           │                       │
-    #1 grad_a Dev-stream/41│#3 grad_b Dev-stream/41│                       │
-    <not-in-yet>           │<not-in-yet>           │                       │
+                                            #12 *._l Host&stream/410
+                                            <not-in-yet>
+                                            #13 grad_*._l Virt/40
+                                            <not-in-yet>
+                                 #8 +_d Virt/40                                  │#10 f Host&stream/410
+                                 <not-in-yet>                                    │<not-in-yet>
+                                 #9 grad_+_d Virt/40                             │#11 grad_f Host&stream/410
+                                 <not-in-yet>                                    │<not-in-yet>
+                   #4 *._e Virt/40                     │#6 c Host&stream/410     │
+                   <not-in-yet>                        │<not-in-yet>             │
+                   #5 grad_*._e Virt/40                │#7 grad_c Host&stream/410│
+                   <not-in-yet>                        │<not-in-yet>             │
+    #0 a Host&stream/410     │#2 b Host&stream/410     │                         │
+    <not-in-yet>             │<not-in-yet>             │                         │
+    #1 grad_a Host&stream/410│#3 grad_b Host&stream/410│                         │
+    <not-in-yet>             │<not-in-yet>             │                         │
|}];
(* Do not update the params: all values and gradients will be at initial points, which are
specified in the tensor in the brackets. *)
@@ -426,22 +393,22 @@ let%expect_test "Simple gradients virtual" =
Tensor.print_tree ~with_grad:true ~depth:9 l;
[%expect
{|
-                                         #12 *._l
-                                          -8.00
-                                         #13 grad_*._l Virt/40
-                                         <void>
-                              #8 +_d Local/46                              │#10 f
-                              <void>                                       │ -2.00
-                              #9 grad_+_d Virt/40                          │#11 grad_f Dev-stream/41
-                              <void>                                       │<void>
-                 #4 *._e Virt/152                  │#6 c                   │
-                 <void>                            │ 1.00e+1               │
-                 #5 grad_*._e Virt/40              │#7 grad_c Dev-stream/41│
-                 <void>                            │<void>                 │
-    #0 a                   │#2 b                   │                       │
-     2.00                  │ -3.00                 │                       │
-    #1 grad_a Dev-stream/41│#3 grad_b Dev-stream/41│                       │
-    <void>                 │<void>                 │                       │
+              #12 *._l
+               -8.00
+              #13 grad_*._l Virt/40
+              <void>
+         #8 +_d Virt/40           │#10 f
+         <void>                   │ -2.00
+         #9 grad_+_d Virt/40      │#11 grad_f
+         <void>                   │ 4.00
+    #4 *._e Virt/40     │#6 c     │
+    <void>              │ 1.00e+1 │
+    #5 grad_*._e Virt/40│#7 grad_c│
+    <void>              │ -2.00   │
+    #0 a     │#2 b      │         │
+     2.00    │ -3.00    │         │
+    #1 grad_a│#3 grad_b │         │
+     6.00    │ -4.00    │         │
|}];
(* Only now compile the SGD update. *)
let sgd_routine = Train.to_routine (module Backend) grad_routine.context IDX.empty sgd in
@@ -452,22 +419,22 @@ let%expect_test "Simple gradients virtual" =
Tensor.print_tree ~with_grad:true ~depth:9 l;
[%expect
{|
-                                         #12 *._l
-                                          -8.00
-                                         #13 grad_*._l Virt/40
-                                         <void>
-                              #8 +_d Local/46                              │#10 f
-                              <void>                                       │ -2.40
-                              #9 grad_+_d Virt/40                          │#11 grad_f Dev-stream/41
-                              <void>                                       │<void>
-                 #4 *._e Virt/152                  │#6 c                   │
-                 <void>                            │ 1.02e+1               │
-                 #5 grad_*._e Virt/40              │#7 grad_c Dev-stream/41│
-                 <void>                            │<void>                 │
-    #0 a                   │#2 b                   │                       │
-     1.40                  │ -2.60                 │                       │
-    #1 grad_a Dev-stream/41│#3 grad_b Dev-stream/41│                       │
-    <void>                 │<void>                 │                       │
+              #12 *._l
+               -8.00
+              #13 grad_*._l Virt/40
+              <void>
+         #8 +_d Virt/40           │#10 f
+         <void>                   │ -2.00
+         #9 grad_+_d Virt/40      │#11 grad_f
+         <void>                   │ 4.00
+    #4 *._e Virt/40     │#6 c     │
+    <void>              │ 1.00e+1 │
+    #5 grad_*._e Virt/40│#7 grad_c│
+    <void>              │ -2.00   │
+    #0 a     │#2 b      │         │
+     2.00    │ -3.00    │         │
+    #1 grad_a│#3 grad_b │         │
+     6.00    │ -4.00    │         │
|}];
(* Now the params will remain as above, but both param gradients and the values and gradients of
other nodes will change thanks to the forward and backward passes. *)
@@ -475,22 +442,22 @@ let%expect_test "Simple gradients virtual" =
Tensor.print_tree ~with_grad:true ~depth:9 l;
[%expect
{|
-                                         #12 *._l
-                                          -1.57e+1
-                                         #13 grad_*._l Virt/40
-                                         <void>
-                              #8 +_d Local/46                              │#10 f
-                              <void>                                       │ -2.40
-                              #9 grad_+_d Virt/40                          │#11 grad_f Dev-stream/41
-                              <void>                                       │<void>
-                 #4 *._e Virt/152                  │#6 c                   │
-                 <void>                            │ 1.02e+1               │
-                 #5 grad_*._e Virt/40              │#7 grad_c Dev-stream/41│
-                 <void>                            │<void>                 │
-    #0 a                   │#2 b                   │                       │
-     1.40                  │ -2.60                 │                       │
-    #1 grad_a Dev-stream/41│#3 grad_b Dev-stream/41│                       │
-    <void>                 │<void>                 │                       │
+              #12 *._l
+               -8.00
+              #13 grad_*._l Virt/40
+              <void>
+         #8 +_d Virt/40           │#10 f
+         <void>                   │ -2.00
+         #9 grad_+_d Virt/40      │#11 grad_f
+         <void>                   │ 4.00
+    #4 *._e Virt/40     │#6 c     │
+    <void>              │ 1.00e+1 │
+    #5 grad_*._e Virt/40│#7 grad_c│
+    <void>              │ -2.00   │
+    #0 a     │#2 b      │         │
+     2.00    │ -3.00    │         │
+    #1 grad_a│#3 grad_b │         │
+     6.00    │ -4.00    │         │
|}]


let%expect_test "tanh plot" =
@@ -539,16 +506,16 @@ let%expect_test "2D neuron virtual" =
Tensor.print_tree ~with_grad:true ~depth:9 v;
[%expect
{|
-                      #8 +_v
-                       7.00e-1
-                      #9 grad_+_v Virt/40
-                      <void>
-              #6 * Local/46              │#0 b
-              <void>                     │ 6.70
-              #7 grad_* Virt/40          │#1 grad_b Local/46
-              <void>                     │<void>
-    #2 w              │#4 x              │
-     -3.00  1.00      │ 2.00  0.00       │
-    #3 grad_w Local/46│#5 grad_x Local/46│
-    <void>            │<void>            │
+             #8 +_v
+              7.00e-1
+             #9 grad_+_v Virt/40
+             <void>
+         #6 * Local/1046       │#0 b
+         <void>                │ 6.70
+         #7 grad_* Virt/40     │#1 grad_b
+         <void>                │ 1.00
+    #2 w         │#4 x         │
+     -3.00  1.00 │ 2.00  0.00  │
+    #3 grad_w    │#5 grad_x    │
+     2.00  0.00  │ -3.00  1.00 │
|}]
File "test/moons_demo_parallel.ml", line 1, characters 0-0:
/usr/bin/git --no-pager diff --no-index --color=always -u _build/default/test/moons_demo_parallel.ml _build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test/moons_demo_parallel.ml.corrected
diff --git a/_build/default/test/moons_demo_parallel.ml b/_build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test/moons_demo_parallel.ml.corrected
index ce09725..7efc668 100644
--- a/_build/default/test/moons_demo_parallel.ml
+++ b/_build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test/moons_demo_parallel.ml.corrected
@@ -105,4 +105,24 @@ let%expect_test "Half-moons data parallel" =
]
in
PrintBox_text.output Stdio.stdout plot_loss);
-  [%expect "Success"]
+  [%expect.unreachable]
+[@@expect.uncaught_exn {|
+  (* CR expect_test_collector: This test expectation appears to contain a backtrace.
+     This is strongly discouraged as backtraces are fragile.
+     Please change this test to not include a backtrace. *)
+  (Option.value_exn arrayjit/lib/backends.ml:296:28)
+  Raised at Base__Error.raise in file "src/error.ml" (inlined), line 9, characters 21-37
+  Called from Base__Option.value_exn in file "src/option.ml", line 119, characters 4-21
+  Called from Backends.Add_device.link_batch in file "arrayjit/lib/backends.ml", line 296, characters 5-44
+  Called from Backends.Raise_backend.link_batch in file "arrayjit/lib/backends.ml", line 489, characters 30-81
+  Called from Ocannl__Train.parallel_update.(fun) in file "lib/train.ml", line 273, characters 15-96
+  Re-raised at Ocannl__Train.parallel_update.(fun) in file "lib/train.ml", lines 271-273, characters 10-97
+  Re-raised at Ocannl__Train.parallel_update.(fun) in file "lib/train.ml", lines 269-274, characters 23-18
+  Called from Base__Array0.mapi in file "src/array0.ml", line 142, characters 24-46
+  Called from Ocannl__Train.parallel_update in file "lib/train.ml", lines 269-274, characters 4-18
+  Re-raised at Ocannl__Train.parallel_update in file "lib/train.ml", lines 266-274, characters 2-18
+  Re-raised at Ocannl__Train.parallel_update in file "lib/train.ml", lines 233-320, characters 32-69
+  Called from Ocannl__Train.example_train_loop in file "lib/train.ml", lines 419-429, characters 4-39
+  Called from Tutorials__Moons_demo_parallel.(fun) in file "test/moons_demo_parallel.ml", lines 58-62, characters 4-8
+  Called from Ppx_expect_runtime__Test_block.Configured.dump_backtrace in file "runtime/test_block.ml", line 142, characters 10-28
+  |}]
File "test/micrograd_demo.ml", line 1, characters 0-0:
/usr/bin/git --no-pager diff --no-index --color=always -u _build/default/test/micrograd_demo.ml _build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test/micrograd_demo.ml.corrected
diff --git a/_build/default/test/micrograd_demo.ml b/_build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test/micrograd_demo.ml.corrected
index 59a566d..e40f9b2 100644
--- a/_build/default/test/micrograd_demo.ml
+++ b/_build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test/micrograd_demo.ml.corrected
@@ -190,40 +190,40 @@ let%expect_test "Micrograd half-moons example" =
│********************#*********************##*#*#****************************************************│
│******************#***#*****##*#*#*#****#*#*#*##****************************************************│
│**************#*#**###**#*##**##********#**#****###**#**********************************************│
-    │***********#***##***#**##*****************#*#*##*###**********************************************..│
-    │***************#**###******************************##*#******************************************...│
-    │*************#*****#******************************#*#***#*#*************************************....│
-    │*********#***#******************......************##*###**#************************************.....│
-    │******#***#*#*#****************........******************#*#*********************************.......│
-    │*****###****#****************...........****************#***********************************........│
-    │*******#*###****************.............******************#*#*****************************.........│
-    │**********##***************.......%%......***************#**##****************************..........│
-    │*****#***#****************......%..%%......*********************************************..........%.│
-    │**####*******************......%..%..........****************##*#**********************........%...%│
-    │****#*******************.......%%..%..........***************#*#**********************.........%....│
-    │*#****##***************.........%....%.........************##***#********************.......%...%%..│
-    │****#*#***************.........%..%.%...........*************#**#*******************..........%.%...│
-    │##*##****************............%...............**************#*##****************.........%.%.%%%.│
-    │**#####************............%...%%.............*******************************...........%..%.%..│
-    │******************...............%.%.%%............*********#*#*#*#*************................%%..│
-    │***##************................%..%..%............************#*#************.............%...%...│
-    │##**#***********...................%...%.............********#**###***********...........%.%%.......│
-    │###************..................%.%.%................***********##**********..................%....│
-    │**##**********.........................................**********#*********.............%%.%..%.....│
-    │**#**********......................%%...................********##********..............%%.%........│
-    │************..........................%..................****#**#********...................%.......│
-    │***********.........................%%.%..................*****##******...............%..%..........│
-    │**********.............................%%..................***********.................%%.%%........│
-    │*********..............................%...%................*******.....................%%%.........│
-    │********...................................%..%....................................%.....%..........│
-    │*******.................................%%..%.%................................%.%.%.%%.............│
-    │******.....................................%%.%...%%.%.......................%%%....%.%.%...........│
-    │*****....................................%.....%.%..%....................%.....%%.%.%...............│
-    │****........................................%%...%.%%%%..%.......%.........%%.%%....................│
-    │***...............................................%..%.......%..%%%%...%.%..%.%.....................│
-    │**.................................................%.%.%............%..%...%........................│
-    │*.................................................%....%.%......%%...%.%............................│
-    │..........................................................%..%......%%%.............................│
+    │***********#***##***#**##*****************#*#*##*###************************************************│
+    │***************#**###******************************##*#*********************************************│
+    │*************#*****#******************************#*#***#*#*****************************************│
+    │*********#***#************************************##*###**#*****************************************│
+    │******#***#*#*#******************************************#*#****************************************│
+    │*****###****#*******************************************#*******************************************│
+    │*******#*###***********************************************#*#**************************************│
+    │**********##**********************%%*********************#**##**************************************│
+    │*****#***#**********************%**%%*************************************************************%*│
+    │**####*************************%**%**************************##*#******************************%***%│
+    │****#**************************%%**%*************************#*#*******************************%****│
+    │*#****##************************%****%*********************##***#***************************%***%%**│
+    │****#*#************************%**%*%************************#**#*****************************%*%***│
+    │##*##****************************%*****************************#*##*************************%*%*%%%*│
+    │**#####************************%***%%*******************************************************%**%*%**│
+    │*********************************%*%*%%*********************#*#*#*#*****************************%%**│
+    │***##****************************%**%**%************************#*#*************************%***%***│
+    │##**#******************************%***%*********************#**###**********************%*%%*******│
+    │###******************************%*%*%***************************##****************************%****│
+    │**##*************************************************************#**********************%%*%**%*****│
+    │**#********************************%%***************************##**********************%%*%********│
+    │**************************************%**********************#**#***************************%*******│
+    │************************************%%*%***********************##*********************%**%**********│
+    │***************************************%%**********************************************%%*%%********│
+    │***************************************%***%********************************************%%%*********│
+    │*******************************************%**%************************************%*****%**********│
+    │****************************************%%**%*%********************************%*%*%*%%*************│
+    │*******************************************%%*%***%%*%***********************%%%****%*%*%***********│
+    │*****************************************%*****%*%**%********************%*****%%*%*%***************│
+    │********************************************%%***%*%%%%**%*******%*********%%*%%********************│
+    │**************************************************%**%*******%**%%%%***%*%**%*%*********************│
+    │***************************************************%*%*%************%**%***%************************│
+    │**************************************************%****%*%******%%***%*%****************************│
+    │**********************************************************%**%******%%%*****************************│
└────────────────────────────────────────────────────────────────────────────────────────────────────┘
|}];
Stdio.printf "Loss:\n%!";
@@ -236,156 +236,156 @@ let%expect_test "Micrograd half-moons example" =
{|
Loss:
┌────────┬────────────────────────────────────────────────────────────────────────────────────────────────────┐
-    │ 3.79e+1│-                                                                                                   │
+    │ 5.79e+6│     -         -         -         -         -         -         -         -         -         -    │
+    │        │       -         -         -         -         -         -         -         -         -         -  │
│        │                                                                                                    │
│        │                                                                                                    │
│        │                                                                                                    │
│        │                                                                                                    │
+    │        │         -         -         -         -         -         -         -         -         -         -│
│        │                                                                                                    │
+    │        │      -  -      -  -      -  -      -  -      -  -      -  -      -  -      -  -      -  -      -  -│
+    │        │  -  -      -  -      -  -      -  -      -  -      -  -      -  -      -  -      -  -      -  -    │
│        │                                                                                                    │
│        │                                                                                                    │
│        │                                                                                                    │
│        │                                                                                                    │
+    │        │    -    -    -    -    -    -    -    -    -    -    -    -    -    -    -    -    -    -    -    -│
+    │        │-         -         -         -         -         -         -         -         -         -         │
+    │        │ -      -  -      -  -      -  -      -  -      -  -      -  -      -  -      -  -      -  -      - │
+    │        │         -         -         -         -         -         -         -         -         -         -│
+    │l       │  -    -    -    -    -    -    -    -    -    -    -    -    -    -    -    -    -    -    -    -  │
+    │o       │     -         -         -         -         -         -         -         -         -         -    │
+    │s       │ -     -   -     -   -     -   -     -   -     -   -     -   -     -   -     -   -     -   -     -  │
+    │s       │ - -       - -       - -       - -       - -       - -       - -       - -       - -       - -      │
+    │        │   -  -      -  -      -  -      -  -      -  -      -  -      -  -      -  -      -  -      -  -   │
│        │                                                                                                    │
+    │        │- - -  -  - - -  -  - - -  -  - - -  -  - - -  -  - - -  -  - - -  -  - - -  -  - - -  -  - - -  -  │
+    │        │        -         -         -         -         -         -         -         -         -         - │
+    │        │- -       - -       - -       - -       - -       - -       - -       - -       - -       - -       │
+    │        │    -   -     -   -     -   -     -   -     -   -     -   -     -   -     -   -     -   -     -   - │
+    │        │ -         -         -         -         -         -         -         -         -         -        │
│        │                                                                                                    │
+    │        │     -         -         -         -         -         -         -         -         -         -    │
+    │        │      -         -         -         -         -         -         -         -         -         -   │
+    │        │   -         -         -         -         -         -         -         -         -         -      │
+    │        │   -  - -    -  - -    -  - -    -  - -    -  - -    -  - -    -  - -    -  - -    -  - -    -  - - │
│        │                                                                                                    │
+    │        │-         -         -         -         -         -         -         -         -         -         │
│        │                                                                                                    │
│        │                                                                                                    │
│        │                                                                                                    │
-    │        │                                                                                                    │
-    │        │                                                                                                    │
-    │l       │                                                                                                    │
-    │o       │                                                                                                    │
-    │s       │                                                                                                    │
+    │ 1.69e+6│    -         -         -         -         -         -         -         -         -         -     │
+    ├────────┼────────────────────────────────────────────────────────────────────────────────────────────────────┤
+    │        │0.00                                                                                         3.99e+2│
+    │        │                                                step                                                │
+    └────────┴────────────────────────────────────────────────────────────────────────────────────────────────────┘
+    |}];
+  Stdio.printf "Log-loss, for better visibility:\n%!";
+  let plot_loss =
+    PrintBox_utils.plot ~x_label:"step" ~y_label:"log loss"
+      [ Line_plot { points = Array.of_list_rev !log_losses; content = PrintBox.line "-" } ]
+  in
+  PrintBox_text.output Stdio.stdout plot_loss;
+  [%expect
+    {|
+    Log-loss, for better visibility:
+    ┌────────┬────────────────────────────────────────────────────────────────────────────────────────────────────┐
+    │ 1.55e+1│     -         -         -         -         -         -         -         -         -         -    │
+    │        │       -         -         -         -         -         -         -         -         -         -  │
+    │        │                                                                                                    │
+    │        │                                                                                                    │
+    │        │         -         -         -         -         -         -         -         -         -         -│
+    │        │      -  -      -  -      -  -      -  -      -  -      -  -      -  -      -  -      -  -      -  -│
+    │        │  -  -      -  -      -  -      -  -      -  -      -  -      -  -      -  -      -  -      -  -    │
+    │        │                                                                                                    │
+    │        │                                                                                                    │
+    │        │    -    -    -    -    -    -    -    -    -    -    -    -    -    -    -    -    -    -    -    -│
+    │        │-         -         -         -         -         -         -         -         -         -         │
+    │        │ -      -  -      -  -      -  -      -  -      -  -      -  -      -  -      -  -      -  -      - │
+    │        │  -      -  -      -  -      -  -      -  -      -  -      -  -      -  -      -  -      -  -      -│
+    │        │       -         -         -         -         -         -         -         -         -         -  │
+    │        │ -   - -   -   - -   -   - -   -   - -   -   - -   -   - -   -   - -   -   - -   -   - -   -   - -  │
+    │        │ - -       - -       - -       - -       - -       - -       - -       - -       - -       - -      │
+    │l       │   -         -         -         -         -         -         -         -         -         -      │
+    │o       │      -         -         -         -         -         -         -         -         -         -   │
+    │g       │- - -  -  - - -  -  - - -  -  - - -  -  - - -  -  - - -  -  - - -  -  - - -  -  - - -  -  - - -  -  │
+    │        │        -         -         -         -         -         -         -         -         -         - │
+    │l       │-         -         -         -         -         -         -         -         -         -         │
+    │o       │  -         -         -         -         -         -         -         -         -         -       │
+    │s       │ -  -   -  -  -   -  -  -   -  -  -   -  -  -   -  -  -   -  -  -   -  -  -   -  -  -   -  -  -   - │
│s       │                                                                                                    │
│        │                                                                                                    │
+    │        │     -         -         -         -         -         -         -         -         -         -    │
│        │                                                                                                    │
+    │        │   -  -      -  -      -  -      -  -      -  -      -  -      -  -      -  -      -  -      -  -   │
+    │        │      -         -         -         -         -         -         -         -         -         -   │
+    │        │   -    -    -    -    -    -    -    -    -    -    -    -    -    -    -    -    -    -    -    - │
│        │                                                                                                    │
│        │                                                                                                    │
+    │        │-         -         -         -         -         -         -         -         -         -         │
│        │                                                                                                    │
│        │                                                                                                    │
│        │                                                                                                    │
│        │                                                                                                    │
-    │        │-                                                                                                   │
-    │        │                                                                                                    │
-    │        │                                                                                                    │
│        │                                                                                                    │
│        │                                                                                                    │
-    │        │                                                                                                    │
-    │        │                                                                                                    │
-    │        │                                                                                                    │
-    │        │-       -         -                                                                                 │
-    │ 0.00   │----------------------------------------------------------------------------------------------------│
+    │ 1.43e+1│    -         -         -         -         -         -         -         -         -         -     │
├────────┼────────────────────────────────────────────────────────────────────────────────────────────────────┤
│        │0.00                                                                                         3.99e+2│
│        │                                                step                                                │
└────────┴────────────────────────────────────────────────────────────────────────────────────────────────────┘
|}];
-  Stdio.printf "Log-loss, for better visibility:\n%!";
-  let plot_loss =
-    PrintBox_utils.plot ~x_label:"step" ~y_label:"log loss"
-      [ Line_plot { points = Array.of_list_rev !log_losses; content = PrintBox.line "-" } ]
+  Stdio.printf "\nLearning rate:\n%!";
+  let plot_lr =
+    PrintBox_utils.plot ~x_label:"step" ~y_label:"learning rate"
+      [ Line_plot { points = Array.of_list_rev !learning_rates; content = PrintBox.line "-" } ]
in
-  PrintBox_text.output Stdio.stdout plot_loss;
+  PrintBox_text.output Stdio.stdout plot_lr;
[%expect
{|
-    Log-loss, for better visibility:
+    Learning rate:
┌─────────┬────────────────────────────────────────────────────────────────────────────────────────────────────┐
-    │ 3.63    │-                                                                                                   │
+    │ -5.89e-5│                                                                                                    │
│         │                                                                                                    │
│         │                                                                                                    │
│         │                                                                                                    │
-    │         │-                                                                                                   │
│         │                                                                                                    │
│         │                                                                                                    │
│         │                                                                                                    │
│         │                                                                                                    │
-    │         │-                                                                                                   │
-    │         │        -         -                                                                                 │
-    │         │ -  -                        -                                                                      │
-    │         │------       -                                                                                      │
-    │         │ ---- -  - --- -   - - -    -                                                                       │
-    │         │   --  -  - - ---     --  -  --            -                                                        │
-    │         │  -  -- - -    ---  - - ---  -----       - --                                                       │
-    │l        │       --  -      - -      -     ---  -    -         -                                              │
-    │o        │       - -  -   --            -  --  - -  -     -                        -                          │
-    │g        │               -     -   -      -  --     - -    -  -     -                   -          -          │
-    │         │     - -     -   --      -                  -      -  --       - -         -                        │
-    │l        │            -             -            --    --            -  -         -  -                       -│
-    │o        │        -        -                           -       -  -       -   -           - -          -    - │
-    │s        │                               -     -        -      -                             --   -           │
-    │s        │                      -                                                   -                         │
-    │         │                       -   -                          -    -           -        -       -    -    - │
-    │         │                   -               - -  -                               -                           │
-    │         │                                                                             -   -                  │
-    │         │                                                  -    -              -                             │
-    │         │                                      -                                        -                    │
│         │                                                                                                    │
-    │         │                            -                                                                       │
-    │         │                                                                -                                   │
│         │                                                                                                    │
│         │                                                                                                    │
│         │                                                                                                    │
│         │                                                                                                    │
-    │         │          -                                                                                         │
+    │l        │                                                                                                    │
+    │e        │                                                                                                    │
+    │a        │                                                                                                    │
+    │r        │                                                                                                    │
+    │n        │                                                                                                    │
+    │i        │                                                                                                    │
+    │n        │                                                                                                    │
+    │g        │                                                                                                    │
│         │                                                                                                    │
+    │r        │                                                                                                    │
+    │a        │                                                                                                    │
+    │t        │                                                                                                    │
+    │e        │                                                                                                    │
│         │                                                                                                    │
-    │ -1.00e+1│     -   - -  -   ----- -- --------------- ---------------------------------------------------------│
-    ├─────────┼────────────────────────────────────────────────────────────────────────────────────────────────────┤
-    │         │0.00                                                                                         3.99e+2│
-    │         │                                                step                                                │
-    └─────────┴────────────────────────────────────────────────────────────────────────────────────────────────────┘
-    |}];
-  Stdio.printf "\nLearning rate:\n%!";
-  let plot_lr =
-    PrintBox_utils.plot ~x_label:"step" ~y_label:"learning rate"
-      [ Line_plot { points = Array.of_list_rev !learning_rates; content = PrintBox.line "-" } ]
-  in
-  PrintBox_text.output Stdio.stdout plot_lr;
-  [%expect
-    {|
-    Learning rate:
-    ┌─────────┬────────────────────────────────────────────────────────────────────────────────────────────────────┐
-    │ -1.00e-1│                                                                                                   -│
-    │         │                                                                                                 ---│
-    │         │                                                                                              ----  │
-    │         │                                                                                            ---     │
-    │         │                                                                                         ----       │
-    │         │                                                                                       ---          │
-    │         │                                                                                    ---             │
-    │         │                                                                                  ---               │
-    │         │                                                                               ---                  │
-    │         │                                                                            ----                    │
-    │         │                                                                          ---                       │
-    │         │                                                                       ----                         │
-    │         │                                                                     ---                            │
-    │l        │                                                                  ----                              │
-    │e        │                                                                ---                                 │
-    │a        │                                                             ---                                    │
-    │r        │                                                           ---                                      │
-    │n        │                                                        ---                                         │
-    │i        │                                                     ----                                           │
-    │n        │                                                   ---                                              │
-    │g        │                                                ----                                                │
-    │         │                                              ---                                                   │
-    │r        │                                           ----                                                     │
-    │a        │                                         ---                                                        │
-    │t        │                                      ---                                                           │
-    │e        │                                    ---                                                             │
-    │         │                                 ---                                                                │
-    │         │                              ----                                                                  │
-    │         │                            ---                                                                     │
-    │         │                         ----                                                                       │
-    │         │                       ---                                                                          │
-    │         │                    ----                                                                            │
-    │         │                  ---                                                                               │
-    │         │               ---                                                                                  │
-    │         │             ---                                                                                    │
-    │         │          ---                                                                                       │
-    │         │       ----                                                                                         │
-    │         │     ---                                                                                            │
-    │         │  ----                                                                                              │
-    │ -2.00e-1│---                                                                                                 │
+    │         │                                                                                                    │
+    │         │                                                                                                    │
+    │         │                                                                                                    │
+    │         │                                                                                                    │
+    │         │                                                                                                    │
+    │         │                                                                                                    │
+    │         │                                                                                                    │
+    │         │                                                                                                    │
+    │         │                                                                                                    │
+    │         │                                                                                                    │
+    │         │                                                                                                    │
+    │         │                                                                                                    │
+    │ -5.89e-5│----------------------------------------------------------------------------------------------------│
├─────────┼────────────────────────────────────────────────────────────────────────────────────────────────────┤
│         │0.00                                                                                         3.99e+2│
│         │                                                step                                                │
File "test/hello_world_op.ml", line 1, characters 0-0:
/usr/bin/git --no-pager diff --no-index --color=always -u _build/default/test/hello_world_op.ml _build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test/hello_world_op.ml.corrected
diff --git a/_build/default/test/hello_world_op.ml b/_build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test/hello_world_op.ml.corrected
index 9209a3a..9be0afd 100644
--- a/_build/default/test/hello_world_op.ml
+++ b/_build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test/hello_world_op.ml.corrected
@@ -105,49 +105,15 @@ let%expect_test "Print constant tensor" =
let%op hey = [ (1, 2, 3); (4, 5, 6) ] in
Train.forward_and_forget backend ctx hey;
Tensor.print ~with_code:false ~with_grad:false `Inline @@ hey;
-  [%expect
-    {|
-    [0]: [  1.00 , 2.00 , 3.00  ;  4.00 , 5.00 , 6.00  ]_hey shape 1:3->0:2  [
-       1.00 , 2.00 , 3.00
-      ;  4.00 , 5.00 , 6.00
-    ]
-    |}];
+  [%expect.unreachable];
Tensor.print ~with_code:false ~with_grad:false `Default @@ hey;
-  [%expect
-    {|
-    ┌────────────────────────────────────────────────────────────────────────┐
-    │[0]: [  1.00 , 2.00 , 3.00  ;  4.00 , 5.00 , 6.00  ]_hey shape 1:3->0:2 │
-    │┌──────┬──────────────────┐                                             │
-    ││      │axis 1            │                                             │
-    │├──────┼──────────────────┤                                             │
-    ││axis 0│ 1.00  2.00  3.00 │                                             │
-    ││      │ 4.00  5.00  6.00 │                                             │
-    │└──────┴──────────────────┘                                             │
-    └────────────────────────────────────────────────────────────────────────┘
-    |}];
+  [%expect.unreachable];
let%op hoo = [| [ 1; 2; 3 ]; [ 4; 5; 6 ] |] in
Train.forward_and_forget backend ctx hoo;
Tensor.print ~with_code:false ~with_grad:false `Inline @@ hoo;
-  [%expect
-    {|
-    [1]: [| [ 1.00 ; 2.00 ; 3.00 ] ; [ 4.00 ; 5.00 ; 6.00 ] |]_hoo shape 0:2|1:3  [|
-      [ 1.00 ; 2.00 ; 3.00 ]
-      ; [ 4.00 ; 5.00 ; 6.00 ]
-    |]
-    |}];
+  [%expect.unreachable];
Tensor.print ~with_code:false ~with_grad:false `Default @@ hoo;
-  [%expect
-    {|
-    ┌─────────────────────────────────────────────────────────────────────────────┐
-    │[1]: [| [ 1.00 ; 2.00 ; 3.00 ] ; [ 4.00 ; 5.00 ; 6.00 ] |]_hoo shape 0:2|1:3 │
-    │┌──────┬──────────────────┐                                                  │
-    ││      │axis 1            │                                                  │
-    │├──────┼──────────────────┤                                                  │
-    ││axis 0│ 1.00  2.00  3.00 │                                                  │
-    ││      │ 4.00  5.00  6.00 │                                                  │
-    │└──────┴──────────────────┘                                                  │
-    └─────────────────────────────────────────────────────────────────────────────┘
-    |}];
+  [%expect.unreachable];
let%op hey2 =
[
((1, 2, 3), (4, 5, 6));
@@ -158,31 +124,9 @@ let%expect_test "Print constant tensor" =
in
Train.forward_and_forget backend ctx hey2;
Tensor.print ~with_code:false ~with_grad:false `Inline @@ hey2;
-  [%expect
-    {|
-    [2]: c4x2x3_hey2 shape 1:2,2:3->0:4  [
-       ( 1.00 , 2.00 , 3.00 ) , ( 4.00 , 5.00 , 6.00 )
-      ;  ( 7.00 , 8.00 , 9.00 ) , ( 10.00 , 11.00 , 12.00 )
-      ;  ( 13.00 , 14.00 , 15.00 ) , ( 16.00 , 17.00 , 18.00 )
-      ;  ( 19.00 , 20.00 , 21.00 ) , ( 22.00 , 23.00 , 24.00 )
-    ]
-    |}];
+  [%expect.unreachable];
Tensor.print ~with_code:false ~with_grad:false `Default @@ hey2;
-  [%expect
-    {|
-    ┌────────────────────────────────────────────────────────────────┐
-    │[2]: c4x2x3_hey2 shape 1:2,2:3->0:4                             │
-    │┌──────┬───────────────────────────┬───────────────────────────┐│
-    ││      │0 @ 1                      │1 @ 1                      ││
-    ││      │axis 2                     │axis 2                     ││
-    │├──────┼───────────────────────────┼───────────────────────────┤│
-    ││axis 0│ 1.00     2.00     3.00    │ 4.00     5.00     6.00    ││
-    ││      │ 7.00     8.00     9.00    │ 1.00e+1  1.10e+1  1.20e+1 ││
-    ││      │ 1.30e+1  1.40e+1  1.50e+1 │ 1.60e+1  1.70e+1  1.80e+1 ││
-    ││      │ 1.90e+1  2.00e+1  2.10e+1 │ 2.20e+1  2.30e+1  2.40e+1 ││
-    │└──────┴───────────────────────────┴───────────────────────────┘│
-    └────────────────────────────────────────────────────────────────┘
-    |}];
+  [%expect.unreachable];
let%op hoo2 =
[|
[ [ 1; 2; 3 ]; [ 4; 5; 6 ] ];
@@ -193,29 +137,9 @@ let%expect_test "Print constant tensor" =
in
Train.forward_and_forget backend ctx hoo2;
Tensor.print ~with_code:false ~with_grad:false `Inline @@ hoo2;
-  [%expect
-    {|
-    [3]: c4x2x3_hoo2 shape 0:4|1:2,2:3  [|
-      [ [ 1.00 ; 2.00 ; 3.00 ] ; [ 4.00 ; 5.00 ; 6.00 ] ]
-      ; [ [ 7.00 ; 8.00 ; 9.00 ] ; [ 10.00 ; 11.00 ; 12.00 ] ]
-      ; [ [ 13.00 ; 14.00 ; 15.00 ] ; [ 16.00 ; 17.00 ; 18.00 ] ]
-      ; [ [ 19.00 ; 20.00 ; 21.00 ] ; [ 22.00 ; 23.00 ; 24.00 ] ]
-    |]
-    |}];
+  [%expect.unreachable];
Tensor.print ~with_code:false ~with_grad:false `Default @@ hoo2;
-  [%expect
-    {|
-    ┌───────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
-    │[3]: c4x2x3_hoo2 shape 0:4|1:2,2:3                                                                             │
-    │┌──────┬──────────────────┬───────────────────────────┬───────────────────────────┬───────────────────────────┐│
-    ││      │0 @ 0             │1 @ 0                      │2 @ 0                      │3 @ 0                      ││
-    ││      │axis 2            │axis 2                     │axis 2                     │axis 2                     ││
-    │├──────┼──────────────────┼───────────────────────────┼───────────────────────────┼───────────────────────────┤│
-    ││axis 1│ 1.00  2.00  3.00 │ 7.00     8.00     9.00    │ 1.30e+1  1.40e+1  1.50e+1 │ 1.90e+1  2.00e+1  2.10e+1 ││
-    ││      │ 4.00  5.00  6.00 │ 1.00e+1  1.10e+1  1.20e+1 │ 1.60e+1  1.70e+1  1.80e+1 │ 2.20e+1  2.30e+1  2.40e+1 ││
-    │└──────┴──────────────────┴───────────────────────────┴───────────────────────────┴───────────────────────────┘│
-    └───────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
-    |}];
+  [%expect.unreachable];
let%op heyhoo =
[

[| [ 1; 2; 3 ]; [ 4; 5; 6 ] |];
@@ -226,29 +150,9 @@ let%expect_test "Print constant tensor" =
in
Train.forward_and_forget backend ctx heyhoo;
Tensor.print ~with_code:false ~with_grad:false `Inline @@ heyhoo;
-  [%expect
-    {|
-    [4]: c4x2x3_heyhoo shape 0:4,1:2|2:3  [|
-      [| [ 1.00 ; 2.00 ; 3.00 ] ; [ 4.00 ; 5.00 ; 6.00 ] |]
-      ; [| [ 7.00 ; 8.00 ; 9.00 ] ; [ 10.00 ; 11.00 ; 12.00 ] |]
-      ; [| [ 13.00 ; 14.00 ; 15.00 ] ; [ 16.00 ; 17.00 ; 18.00 ] |]
-      ; [| [ 19.00 ; 20.00 ; 21.00 ] ; [ 22.00 ; 23.00 ; 24.00 ] |]
-    |]
-    |}];
+  [%expect.unreachable];
Tensor.print ~with_code:false ~with_grad:false `Default @@ heyhoo;
-  [%expect
-    {|
-    ┌───────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
-    │[4]: c4x2x3_heyhoo shape 0:4,1:2|2:3                                                                           │
-    │┌──────┬──────────────────┬───────────────────────────┬───────────────────────────┬───────────────────────────┐│
-    ││      │0 @ 0             │1 @ 0                      │2 @ 0                      │3 @ 0                      ││
-    ││      │axis 2            │axis 2                     │axis 2                     │axis 2                     ││
-    │├──────┼──────────────────┼───────────────────────────┼───────────────────────────┼───────────────────────────┤│
-    ││axis 1│ 1.00  2.00  3.00 │ 7.00     8.00     9.00    │ 1.30e+1  1.40e+1  1.50e+1 │ 1.90e+1  2.00e+1  2.10e+1 ││
-    ││      │ 4.00  5.00  6.00 │ 1.00e+1  1.10e+1  1.20e+1 │ 1.60e+1  1.70e+1  1.80e+1 │ 2.20e+1  2.30e+1  2.40e+1 ││
-    │└──────┴──────────────────┴───────────────────────────┴───────────────────────────┴───────────────────────────┘│
-    └───────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
-    |}];
+  [%expect.unreachable];
let%op heyhoo2 =
[|
[| [ [ 1; 31 ]; [ 2; 32 ]; [ 3; 33 ] ]; [ [ 4; 34 ]; [ 5; 35 ]; [ 6; 36 ] ] |];
@@ -259,54 +163,9 @@ let%expect_test "Print constant tensor" =
in
Train.forward_and_forget backend ctx heyhoo2;
Tensor.print ~with_code:false ~with_grad:false `Inline @@ heyhoo2;
-  [%expect
-    {|
-    [5]: c4x2x3x2_heyhoo2 shape 0:4,1:2|2:3,3:2  [|
-      [|
-        [ [ 1.00 ; 31.00 ] ; [ 2.00 ; 32.00 ] ; [ 3.00 ; 33.00 ] ]
-        ; [ [ 4.00 ; 34.00 ] ; [ 5.00 ; 35.00 ] ; [ 6.00 ; 36.00 ] ]
-      |]
-      ; [|
-        [ [ 7.00 ; 37.00 ] ; [ 8.00 ; 38.00 ] ; [ 9.00 ; 39.00 ] ]
-        ; [ [ 10.00 ; 40.00 ] ; [ 11.00 ; 41.00 ] ; [ 12.00 ; 42.00 ] ]
-      |]
-      ; [|
-        [ [ 13.00 ; 43.00 ] ; [ 14.00 ; 44.00 ] ; [ 15.00 ; 45.00 ] ]
-        ; [ [ 16.00 ; 46.00 ] ; [ 17.00 ; 47.00 ] ; [ 18.00 ; 48.00 ] ]
-      |]
-      ; [|
-        [ [ 19.00 ; 49.00 ] ; [ 20.00 ; 50.00 ] ; [ 21.00 ; 51.00 ] ]
-        ; [ [ 22.00 ; 52.00 ] ; [ 23.00 ; 53.00 ] ; [ 24.00 ; 54.00 ] ]
-      |]
-    |]
-    |}];
+  [%expect.unreachable];
Tensor.print ~with_code:false ~with_grad:false `Default @@ heyhoo2;
-  [%expect
-    {|
-    ┌──────────────────────────────────────────────┐
-    │[5]: c4x2x3x2_heyhoo2 shape 0:4,1:2|2:3,3:2   │
-    │┌──────┬──────────────────┬──────────────────┐│
-    ││      │0 @ 1             │1 @ 1             ││
-    ││      │axis 3            │axis 3            ││
-    │├──────┼──────────────────┼──────────────────┤│
-    ││0 @ 0 │ 1.00  3.10e+1    │ 4.00  3.40e+1    ││
-    ││axis 2│ 2.00  3.20e+1    │ 5.00  3.50e+1    ││
-    ││      │ 3.00  3.30e+1    │ 6.00  3.60e+1    ││
-    │├──────┼──────────────────┼──────────────────┤│
-    ││1 @ 0 │ 7.00  3.70e+1    │ 1.00e+1  4.00e+1 ││
-    ││axis 2│ 8.00  3.80e+1    │ 1.10e+1  4.10e+1 ││
-    ││      │ 9.00  3.90e+1    │ 1.20e+1  4.20e+1 ││
-    │├──────┼──────────────────┼──────────────────┤│
-    ││2 @ 0 │ 1.30e+1  4.30e+1 │ 1.60e+1  4.60e+1 ││
-    ││axis 2│ 1.40e+1  4.40e+1 │ 1.70e+1  4.70e+1 ││
-    ││      │ 1.50e+1  4.50e+1 │ 1.80e+1  4.80e+1 ││
-    │├──────┼──────────────────┼──────────────────┤│
-    ││3 @ 0 │ 1.90e+1  4.90e+1 │ 2.20e+1  5.20e+1 ││
-    ││axis 2│ 2.00e+1  5.00e+1 │ 2.30e+1  5.30e+1 ││
-    ││      │ 2.10e+1  5.10e+1 │ 2.40e+1  5.40e+1 ││
-    │└──────┴──────────────────┴──────────────────┘│
-    └──────────────────────────────────────────────┘
-    |}];
+  [%expect.unreachable];
let%op heyhoo3 =
[|
[|
@@ -321,63 +180,9 @@ let%expect_test "Print constant tensor" =
in
Train.forward_and_forget backend ctx heyhoo3;
Tensor.print ~with_code:false ~with_grad:false `Inline @@ heyhoo3;
-  [%expect
-    {|
-    [6]: c2x2x2x3x2_heyhoo3 shape 0:2,1:2|2:2,3:3,4:2  [|
-      [|
-        [
-          [ [ 1.00 ; 31.00 ] ; [ 2.00 ; 32.00 ] ; [ 3.00 ; 33.00 ] ]
-          ; [ [ 4.00 ; 34.00 ] ; [ 5.00 ; 35.00 ] ; [ 6.00 ; 36.00 ] ]
-        ]
-        ; [
-          [ [ 7.00 ; 37.00 ] ; [ 8.00 ; 38.00 ] ; [ 9.00 ; 39.00 ] ]
-          ; [ [ 10.00 ; 40.00 ] ; [ 11.00 ; 41.00 ] ; [ 12.00 ; 42.00 ] ]
-        ]
-      |]
-      ; [|
-        [
-          [ [ 13.00 ; 43.00 ] ; [ 14.00 ; 44.00 ] ; [ 15.00 ; 45.00 ] ]
-          ; [ [ 16.00 ; 46.00 ] ; [ 17.00 ; 47.00 ] ; [ 18.00 ; 48.00 ] ]
-        ]
-        ; [
-          [ [ 19.00 ; 49.00 ] ; [ 20.00 ; 50.00 ] ; [ 21.00 ; 51.00 ] ]
-          ; [ [ 22.00 ; 52.00 ] ; [ 23.00 ; 53.00 ] ; [ 24.00 ; 54.00 ] ]
-        ]
-      |]
-    |]
-    |}];
+  [%expect.unreachable];
Tensor.print ~with_code:false ~with_grad:false `Default @@ heyhoo3;
-  [%expect
-    {|
-    ┌──────────────────────────────────────────────────┐
-    │[6]: c2x2x2x3x2_heyhoo3 shape 0:2,1:2|2:2,3:3,4:2 │
-    │┌──────┬───────────────┬──────────────────┐       │
-    ││0 @ 0 │0 @ 2          │1 @ 2             │       │
-    ││      │axis 4         │axis 4            │       │
-    │├──────┼───────────────┼──────────────────┤       │
-    ││0 @ 1 │ 1.00  3.10e+1 │ 4.00  3.40e+1    │       │
-    ││axis 3│ 2.00  3.20e+1 │ 5.00  3.50e+1    │       │
-    ││      │ 3.00  3.30e+1 │ 6.00  3.60e+1    │       │
-    │├──────┼───────────────┼──────────────────┤       │
-    ││1 @ 1 │ 7.00  3.70e+1 │ 1.00e+1  4.00e+1 │       │
-    ││axis 3│ 8.00  3.80e+1 │ 1.10e+1  4.10e+1 │       │
-    ││      │ 9.00  3.90e+1 │ 1.20e+1  4.20e+1 │       │
-    │└──────┴───────────────┴──────────────────┘       │
-    ├──────────────────────────────────────────────────┤
-    │┌──────┬──────────────────┬──────────────────┐    │
-    ││1 @ 0 │0 @ 2             │1 @ 2             │    │
-    ││      │axis 4            │axis 4            │    │
-    │├──────┼──────────────────┼──────────────────┤    │
-    ││0 @ 1 │ 1.30e+1  4.30e+1 │ 1.60e+1  4.60e+1 │    │
-    ││axis 3│ 1.40e+1  4.40e+1 │ 1.70e+1  4.70e+1 │    │
-    ││      │ 1.50e+1  4.50e+1 │ 1.80e+1  4.80e+1 │    │
-    │├──────┼──────────────────┼──────────────────┤    │
-    ││1 @ 1 │ 1.90e+1  4.90e+1 │ 2.20e+1  5.20e+1 │    │
-    ││axis 3│ 2.00e+1  5.00e+1 │ 2.30e+1  5.30e+1 │    │
-    ││      │ 2.10e+1  5.10e+1 │ 2.40e+1  5.40e+1 │    │
-    │└──────┴──────────────────┴──────────────────┘    │
-    └──────────────────────────────────────────────────┘
-    |}];
+  [%expect.unreachable];
let%op heyhoo4 =
[|
[
@@ -392,63 +197,22 @@ let%expect_test "Print constant tensor" =
in
Train.forward_and_forget backend ctx heyhoo4;
Tensor.print ~with_code:false ~with_grad:false `Inline @@ heyhoo4;
-  [%expect
-    {|
-    [7]: c2x2x2x3x2_heyhoo4 shape 0:2|4:2->1:2,2:2,3:3  [|
-      [
-        [
-          [  1.00 , 31.00  ;  2.00 , 32.00  ;  3.00 , 33.00  ]
-          ; [  4.00 , 34.00  ;  5.00 , 35.00  ;  6.00 , 36.00  ]
-        ]
-        ; [
-          [  7.00 , 37.00  ;  8.00 , 38.00  ;  9.00 , 39.00  ]
-          ; [  10.00 , 40.00  ;  11.00 , 41.00  ;  12.00 , 42.00  ]
-        ]
-      ]
-      ; [
-        [
-          [  13.00 , 43.00  ;  14.00 , 44.00  ;  15.00 , 45.00  ]
-          ; [  16.00 , 46.00  ;  17.00 , 47.00  ;  18.00 , 48.00  ]
-        ]
-        ; [
-          [  19.00 , 49.00  ;  20.00 , 50.00  ;  21.00 , 51.00  ]
-          ; [  22.00 , 52.00  ;  23.00 , 53.00  ;  24.00 , 54.00  ]
-        ]
-      ]
-    |]
-    |}];
+  [%expect.unreachable];
Tensor.print ~with_code:false ~with_grad:false `Default @@ heyhoo4;
-  [%expect
-    {|
-    ┌───────────────────────────────────────────────────┐
-    │[7]: c2x2x2x3x2_heyhoo4 shape 0:2|4:2->1:2,2:2,3:3 │
-    │┌──────┬───────────────┬──────────────────┐        │
-    ││0 @ 0 │0 @ 2          │1 @ 2             │        │
-    ││      │axis 4         │axis 4            │        │
-    │├──────┼───────────────┼──────────────────┤        │
-    ││0 @ 1 │ 1.00  3.10e+1 │ 4.00  3.40e+1    │        │
-    ││axis 3│ 2.00  3.20e+1 │ 5.00  3.50e+1    │        │
-    ││      │ 3.00  3.30e+1 │ 6.00  3.60e+1    │        │
-    │├──────┼───────────────┼──────────────────┤        │
-    ││1 @ 1 │ 7.00  3.70e+1 │ 1.00e+1  4.00e+1 │        │
-    ││axis 3│ 8.00  3.80e+1 │ 1.10e+1  4.10e+1 │        │
-    ││      │ 9.00  3.90e+1 │ 1.20e+1  4.20e+1 │        │
-    │└──────┴───────────────┴──────────────────┘        │
-    ├───────────────────────────────────────────────────┤
-    │┌──────┬──────────────────┬──────────────────┐     │
-    ││1 @ 0 │0 @ 2             │1 @ 2             │     │
-    ││      │axis 4            │axis 4            │     │
-    │├──────┼──────────────────┼──────────────────┤     │
-    ││0 @ 1 │ 1.30e+1  4.30e+1 │ 1.60e+1  4.60e+1 │     │
-    ││axis 3│ 1.40e+1  4.40e+1 │ 1.70e+1  4.70e+1 │     │
-    ││      │ 1.50e+1  4.50e+1 │ 1.80e+1  4.80e+1 │     │
-    │├──────┼──────────────────┼──────────────────┤     │
-    ││1 @ 1 │ 1.90e+1  4.90e+1 │ 2.20e+1  5.20e+1 │     │
-    ││axis 3│ 2.00e+1  5.00e+1 │ 2.30e+1  5.30e+1 │     │
-    ││      │ 2.10e+1  5.10e+1 │ 2.40e+1  5.40e+1 │     │
-    │└──────┴──────────────────┴──────────────────┘     │
-    └───────────────────────────────────────────────────┘
-    |}]
+  [%expect.unreachable]
+[@@expect.uncaught_exn {|
+  (* CR expect_test_collector: This test expectation appears to contain a backtrace.
+     This is strongly discouraged as backtraces are fragile.
+     Please change this test to not include a backtrace. *)
+  "Assert_failure arrayjit/lib/backends.ml:76:12"
+  Raised at Backends.Add_buffer_retrieval_and_syncing.update_writer_event.(fun) in file "arrayjit/lib/backends.ml", line 76, characters 12-35
+  Called from Base__Option.iter in file "src/option.ml" (inlined), line 83, characters 14-17
+  Called from Ir__Tnode.do_read in file "arrayjit/lib/tnode.ml", lines 605-609, characters 2-19
+  Called from Ocannl__Tensor.to_doc in file "lib/tensor.ml", line 666, characters 10-28
+  Called from Ocannl__Tensor.print in file "lib/tensor.ml", line 757, characters 4-63
+  Called from Tutorials__Hello_world_op.(fun) in file "test/hello_world_op.ml", line 107, characters 2-63
+  Called from Ppx_expect_runtime__Test_block.Configured.dump_backtrace in file "runtime/test_block.ml", line 142, characters 10-28
+  |}]


let%expect_test "Matrix multiplication dims 2x3" =
Tensor.unsafe_reinitialize ();
@@ -468,31 +232,38 @@ let%expect_test "Matrix multiplication dims 2x3" =
let%op y = ("hey" 7.0 * [ 2; 3 ]) + [ 4; 5; 6 ] in
Train.forward_and_forget backend ctx y;
Tensor.print ~with_code:false ~with_grad:false `Default @@ hey;
-  [%expect
-    {|
-    ┌────────────────────────┐
-    │[0]: hey shape 1:2->0:3 │
-    │┌──────┬────────────┐   │
-    ││      │axis 1      │   │
-    │├──────┼────────────┤   │
-    ││axis 0│ 7.00  7.00 │   │
-    ││      │ 7.00  7.00 │   │
-    ││      │ 7.00  7.00 │   │
-    │└──────┴────────────┘   │
-    └────────────────────────┘
-    |}];
+  [%expect.unreachable];
Tensor.print ~with_code:false ~with_grad:false `Default @@ y;
-  [%expect
-    {|
-    ┌──────────────────────────────┐
-    │[6]: +_y shape 0:3            │
-    │┌┬───────────────────────────┐│
-    │││axis 0                     ││
-    │├┼───────────────────────────┤│
-    │││ 3.90e+1  4.00e+1  4.10e+1 ││
-    │└┴───────────────────────────┘│
-    └──────────────────────────────┘
-    |}]
+  [%expect.unreachable]
+[@@expect.uncaught_exn {|
+  (* CR expect_test_collector: This test expectation appears to contain a backtrace.
+     This is strongly discouraged as backtraces are fragile.
+     Please change this test to not include a backtrace. *)
+  (Invalid_argument "index out of bounds")
+  Raised by primitive operation at Ir__Assignments.to_low_level.loop.(fun) in file "arrayjit/lib/assignments.ml", line 270, characters 39-54
+  Called from Ir__Low_level.unroll_dims.generate_all_combinations in file "arrayjit/lib/low_level.ml", lines 1257-1259, characters 12-40
+  Called from Ir__Low_level.unroll_dims.generate_all_combinations in file "arrayjit/lib/low_level.ml", lines 1257-1259, characters 12-40
+  Called from Ir__Assignments.to_low_level.loop in file "arrayjit/lib/assignments.ml", line 248, characters 17-24
+  Called from Ir__Assignments.to_low_level.loop in file "arrayjit/lib/assignments.ml", line 248, characters 17-24
+  Called from Ir__Assignments.to_low_level.loop in file "arrayjit/lib/assignments.ml", line 249, characters 17-24
+  Called from Ir__Assignments.to_low_level.loop in file "arrayjit/lib/assignments.ml", line 248, characters 17-24
+  Called from Ir__Assignments.to_low_level.loop in file "arrayjit/lib/assignments.ml", line 246, characters 66-72
+  Called from Ir__Assignments.to_low_level in file "arrayjit/lib/assignments.ml", line 272, characters 2-11
+  Re-raised at Ir__Assignments.to_low_level in file "arrayjit/lib/assignments.ml", lines 151-272, characters 29-11
+  Called from Ir__Assignments.lower in file "arrayjit/lib/assignments.ml", line 435, characters 26-43
+  Re-raised at Ir__Assignments.lower in file "arrayjit/lib/assignments.ml", line 435, characters 2-43
+  Re-raised at Ir__Assignments.lower in file "arrayjit/lib/assignments.ml", lines 433-440, characters 22-85
+  Called from Backends.lower_assignments in file "arrayjit/lib/backends.ml", lines 193-194, characters 4-45
+  Re-raised at Backends.lower_assignments in file "arrayjit/lib/backends.ml", lines 185-194, characters 34-47
+  Called from Backends.Raise_backend.compile in file "arrayjit/lib/backends.ml", line 378, characters 6-59
+  Re-raised at Backends.Raise_backend.compile in file "arrayjit/lib/backends.ml", lines 377-378, characters 4-59
+  Re-raised at Backends.Raise_backend.compile in file "arrayjit/lib/backends.ml", lines 376-384, characters 26-99
+  Called from Ocannl__Train.forward_and_ctx in file "lib/train.ml", line 502, characters 25-95
+  Re-raised at Ocannl__Train.forward_and_ctx in file "lib/train.ml", lines 492-506, characters 32-17
+  Called from Ocannl__Train.forward_and_forget in file "lib/train.ml", line 510, characters 12-83
+  Called from Tutorials__Hello_world_op.(fun) in file "test/hello_world_op.ml", line 469, characters 2-40
+  Called from Ppx_expect_runtime__Test_block.Configured.dump_backtrace in file "runtime/test_block.ml", line 142, characters 10-28
+  |}]


let%expect_test "Big matrix" =
Tensor.unsafe_reinitialize ();
@@ -514,72 +285,41 @@ let%expect_test "Big matrix" =
let y = TDSL.O.((hey * zero_to_twenty) + zero_to_twenty) in
Train.forward_and_forget backend ctx y;
Tensor.print ~with_code:false ~with_grad:false `Inline zero_to_twenty;
-  [%expect
-    {|
-    [2]: 0...20 shape 0:21  [
-      0.00
-      ; 1.00
-      ; 2.00
-      ; 3.00
-      ; 4.00
-      ; 5.00
-      ; 6.00
-      ; 7.00
-      ; 8.00
-      ; 9.00
-      ; 10.00
-      ; 11.00
-      ; 12.00
-      ; 13.00
-      ; 14.00
-      ; 15.00
-      ; 16.00
-      ; 17.00
-      ; 18.00
-      ; 19.00
-      ; 20.00
-    ]
-    |}];
+  [%expect.unreachable];
Tensor.print ~with_code:false ~with_grad:false `Default zero_to_twenty;
-  [%expect
-    {|
-    ┌──────────────────────────────────────┐
-    │[2]: 0...20 shape 0:21                │
-    │┌┬───────────────────────────────────┐│
-    │││axis 0                             ││
-    │├┼───────────────────────────────────┤│
-    │││ 0.00  1.00  ...  1.90e+1  2.00e+1 ││
-    │└┴───────────────────────────────────┘│
-    └──────────────────────────────────────┘
-    |}];
+  [%expect.unreachable];
Tensor.print ~with_code:false ~with_grad:false `Default hey;
-  [%expect
-    {|
-    ┌──────────────────────────────────────────────────┐
-    │[0]: hey shape 1:21->0:21                         │
-    │┌──────┬─────────────────────────────────────────┐│
-    ││      │axis 1                                   ││
-    │├──────┼─────────────────────────────────────────┤│
-    ││axis 0│ 5.00e-1  5.00e-1  ...  5.00e-1  5.00e-1 ││
-    ││      │ 5.00e-1  5.00e-1  ...  5.00e-1  5.00e-1 ││
-    ││      │ ...      ...      ...  ...      ...     ││
-    ││      │ 5.00e-1  5.00e-1  ...  5.00e-1  5.00e-1 ││
-    ││      │ 5.00e-1  5.00e-1  ...  5.00e-1  5.00e-1 ││
-    │└──────┴─────────────────────────────────────────┘│
-    └──────────────────────────────────────────────────┘
-    |}];
+  [%expect.unreachable];
Tensor.print ~with_code:false ~with_grad:false `Default y;
-  [%expect
-    {|
-    ┌────────────────────────────────────────────┐
-    │[5]: + shape 0:21                           │
-    │┌┬─────────────────────────────────────────┐│
-    │││axis 0                                   ││
-    │├┼─────────────────────────────────────────┤│
-    │││ 1.05e+2  1.06e+2  ...  1.24e+2  1.25e+2 ││
-    │└┴─────────────────────────────────────────┘│
-    └────────────────────────────────────────────┘
-    |}]
+  [%expect.unreachable]
+[@@expect.uncaught_exn {|
+  (* CR expect_test_collector: This test expectation appears to contain a backtrace.
+     This is strongly discouraged as backtraces are fragile.
+     Please change this test to not include a backtrace. *)
+  (Invalid_argument "index out of bounds")
+  Raised by primitive operation at Ir__Assignments.to_low_level.loop.(fun) in file "arrayjit/lib/assignments.ml", line 270, characters 39-54
+  Called from Ir__Low_level.unroll_dims.generate_all_combinations in file "arrayjit/lib/low_level.ml", lines 1257-1259, characters 12-40
+  Called from Ir__Low_level.unroll_dims.generate_all_combinations in file "arrayjit/lib/low_level.ml", lines 1257-1259, characters 12-40
+  Called from Ir__Assignments.to_low_level.loop in file "arrayjit/lib/assignments.ml", line 248, characters 17-24
+  Called from Ir__Assignments.to_low_level.loop in file "arrayjit/lib/assignments.ml", line 248, characters 17-24
+  Called from Ir__Assignments.to_low_level.loop in file "arrayjit/lib/assignments.ml", line 248, characters 17-24
+  Called from Ir__Assignments.to_low_level.loop in file "arrayjit/lib/assignments.ml", line 246, characters 66-72
+  Called from Ir__Assignments.to_low_level in file "arrayjit/lib/assignments.ml", line 272, characters 2-11
+  Re-raised at Ir__Assignments.to_low_level in file "arrayjit/lib/assignments.ml", lines 151-272, characters 29-11
+  Called from Ir__Assignments.lower in file "arrayjit/lib/assignments.ml", line 435, characters 26-43
+  Re-raised at Ir__Assignments.lower in file "arrayjit/lib/assignments.ml", line 435, characters 2-43
+  Re-raised at Ir__Assignments.lower in file "arrayjit/lib/assignments.ml", lines 433-440, characters 22-85
+  Called from Backends.lower_assignments in file "arrayjit/lib/backends.ml", lines 193-194, characters 4-45
+  Re-raised at Backends.lower_assignments in file "arrayjit/lib/backends.ml", lines 185-194, characters 34-47
+  Called from Backends.Raise_backend.compile in file "arrayjit/lib/backends.ml", line 378, characters 6-59
+  Re-raised at Backends.Raise_backend.compile in file "arrayjit/lib/backends.ml", lines 377-378, characters 4-59
+  Re-raised at Backends.Raise_backend.compile in file "arrayjit/lib/backends.ml", lines 376-384, characters 26-99
+  Called from Ocannl__Train.forward_and_ctx in file "lib/train.ml", line 502, characters 25-95
+  Re-raised at Ocannl__Train.forward_and_ctx in file "lib/train.ml", lines 492-506, characters 32-17
+  Called from Ocannl__Train.forward_and_forget in file "lib/train.ml", line 510, characters 12-83
+  Called from Tutorials__Hello_world_op.(fun) in file "test/hello_world_op.ml", line 515, characters 2-40
+  Called from Ppx_expect_runtime__Test_block.Configured.dump_backtrace in file "runtime/test_block.ml", line 142, characters 10-28
+  |}]


let%expect_test "Very big tensor" =
Tensor.unsafe_reinitialize ();
@@ -602,140 +342,7 @@ let%expect_test "Very big tensor" =
Train.forward_and_forget backend ctx hoo;
Tensor.print ~with_code:false ~with_grad:false `Default hey;
[%expect
-    {|
-    ┌───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
-    │[0]: r6x10x11x7x8x9 shape 0:6|3:7,4:8,5:9->1:10,2:11                                                                                                                                   │
-    │┌──────┬─────────────────────────────────────────┬─────────────────────────────────────────┬──────┬─────────────────────────────────────────┬─────────────────────────────────────────┐│
-    ││0 @ 0 │0 @ 4                                    │1 @ 4                                    │~~~~~ │6 @ 4                                    │7 @ 4                                    ││
-    ││      │axis 5                                   │axis 5                                   │axis 5│axis 5                                   │axis 5                                   ││
-    │├──────┼─────────────────────────────────────────┼─────────────────────────────────────────┼──────┼─────────────────────────────────────────┼─────────────────────────────────────────┤│
-    ││0 @ 1 │ 0.00     1.00     ...  7.00     8.00    │ 9.00     1.00e+1  ...  1.60e+1  1.70e+1 │ ...  │ 5.40e+1  5.50e+1  ...  6.10e+1  6.20e+1 │ 6.30e+1  6.40e+1  ...  7.00e+1  7.10e+1 ││
-    ││axis 2│ 5.04e+2  5.05e+2  ...  5.11e+2  5.12e+2 │ 5.13e+2  5.14e+2  ...  5.20e+2  5.21e+2 │      │ 5.58e+2  5.59e+2  ...  5.65e+2  5.66e+2 │ 5.67e+2  5.68e+2  ...  5.74e+2  5.75e+2 ││
-    ││      │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     │      │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     ││
-    ││      │ 4.53e+3  4.53e+3  ...  4.54e+3  4.54e+3 │ 4.54e+3  4.54e+3  ...  4.55e+3  4.55e+3 │      │ 4.59e+3  4.59e+3  ...  4.59e+3  4.59e+3 │ 4.59e+3  4.60e+3  ...  4.60e+3  4.60e+3 ││
-    ││      │ 5.04e+3  5.04e+3  ...  5.04e+3  5.04e+3 │ 5.04e+3  5.05e+3  ...  5.05e+3  5.05e+3 │      │ 5.09e+3  5.09e+3  ...  5.10e+3  5.10e+3 │ 5.10e+3  5.10e+3  ...  5.11e+3  5.11e+3 ││
-    │├──────┼─────────────────────────────────────────┼─────────────────────────────────────────┼──────┼─────────────────────────────────────────┼─────────────────────────────────────────┤│
-    ││1 @ 1 │ 5.54e+3  5.54e+3  ...  5.55e+3  5.55e+3 │ 5.55e+3  5.55e+3  ...  5.56e+3  5.56e+3 │ ...  │ 5.59e+3  5.59e+3  ...  5.60e+3  5.60e+3 │ 5.60e+3  5.60e+3  ...  5.61e+3  5.61e+3 ││
-    ││axis 2│ 6.04e+3  6.04e+3  ...  6.05e+3  6.05e+3 │ 6.05e+3  6.05e+3  ...  6.06e+3  6.06e+3 │      │ 6.10e+3  6.10e+3  ...  6.10e+3  6.11e+3 │ 6.11e+3  6.11e+3  ...  6.11e+3  6.11e+3 ││
-    ││      │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     │      │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     ││
-    ││      │ 1.00e+4  1.00e+4  ...  1.00e+4  1.00e+4 │ 1.00e+4  1.00e+4  ...  1.00e+4  1.00e+4 │      │ 1.01e+4  1.01e+4  ...  1.01e+4  1.01e+4 │ 1.01e+4  1.01e+4  ...  1.01e+4  1.01e+4 ││
-    ││      │ 1.05e+4  1.05e+4  ...  1.05e+4  1.05e+4 │ 1.05e+4  1.05e+4  ...  1.06e+4  1.06e+4 │      │ 1.06e+4  1.06e+4  ...  1.06e+4  1.06e+4 │ 1.06e+4  1.06e+4  ...  1.06e+4  1.06e+4 ││
-    │├──────┼─────────────────────────────────────────┼─────────────────────────────────────────┼──────┼─────────────────────────────────────────┼─────────────────────────────────────────┤│
-    ││~~~~~ │ ...                                     │ ...                                     │ ...  │ ...                                     │ ...                                     ││
-    ││axis 2│                                         │                                         │      │                                         │                                         ││
-    │├──────┼─────────────────────────────────────────┼─────────────────────────────────────────┼──────┼─────────────────────────────────────────┼─────────────────────────────────────────┤│
-    ││8 @ 1 │ 4.43e+4  4.43e+4  ...  4.43e+4  4.43e+4 │ 4.43e+4  4.43e+4  ...  4.43e+4  4.43e+4 │ ...  │ 4.44e+4  4.44e+4  ...  4.44e+4  4.44e+4 │ 4.44e+4  4.44e+4  ...  4.44e+4  4.44e+4 ││
-    ││axis 2│ 4.48e+4  4.48e+4  ...  4.48e+4  4.48e+4 │ 4.48e+4  4.48e+4  ...  4.48e+4  4.48e+4 │      │ 4.49e+4  4.49e+4  ...  4.49e+4  4.49e+4 │ 4.49e+4  4.49e+4  ...  4.49e+4  4.49e+4 ││
-    ││      │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     │      │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     ││
-    ││      │ 4.88e+4  4.88e+4  ...  4.88e+4  4.88e+4 │ 4.88e+4  4.88e+4  ...  4.89e+4  4.89e+4 │      │ 4.89e+4  4.89e+4  ...  4.89e+4  4.89e+4 │ 4.89e+4  4.89e+4  ...  4.89e+4  4.89e+4 ││
-    ││      │ 4.93e+4  4.93e+4  ...  4.93e+4  4.94e+4 │ 4.94e+4  4.94e+4  ...  4.94e+4  4.94e+4 │      │ 4.94e+4  4.94e+4  ...  4.94e+4  4.94e+4 │ 4.94e+4  4.94e+4  ...  4.94e+4  4.94e+4 ││
-    │├──────┼─────────────────────────────────────────┼─────────────────────────────────────────┼──────┼─────────────────────────────────────────┼─────────────────────────────────────────┤│
-    ││9 @ 1 │ 4.98e+4  4.98e+4  ...  4.99e+4  4.99e+4 │ 4.99e+4  4.99e+4  ...  4.99e+4  4.99e+4 │ ...  │ 4.99e+4  4.99e+4  ...  4.99e+4  4.99e+4 │ 4.99e+4  4.99e+4  ...  4.99e+4  4.99e+4 ││
-    ││axis 2│ 5.04e+4  5.04e+4  ...  5.04e+4  5.04e+4 │ 5.04e+4  5.04e+4  ...  5.04e+4  5.04e+4 │      │ 5.04e+4  5.04e+4  ...  5.04e+4  5.04e+4 │ 5.04e+4  5.04e+4  ...  5.04e+4  5.04e+4 ││
-    ││      │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     │      │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     ││
-    ││      │ 5.44e+4  5.44e+4  ...  5.44e+4  5.44e+4 │ 5.44e+4  5.44e+4  ...  5.44e+4  5.44e+4 │      │ 5.44e+4  5.44e+4  ...  5.44e+4  5.44e+4 │ 5.44e+4  5.44e+4  ...  5.45e+4  5.45e+4 ││
-    ││      │ 5.49e+4  5.49e+4  ...  5.49e+4  5.49e+4 │ 5.49e+4  5.49e+4  ...  5.49e+4  5.49e+4 │      │ 5.49e+4  5.49e+4  ...  5.49e+4  5.49e+4 │ 5.49e+4  5.50e+4  ...  5.50e+4  5.50e+4 ││
-    │└──────┴─────────────────────────────────────────┴─────────────────────────────────────────┴──────┴─────────────────────────────────────────┴─────────────────────────────────────────┘│
-    ├───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┤
-    │┌──────┬─────────────────────────────────────────┬─────────────────────────────────────────┬──────┬─────────────────────────────────────────┬─────────────────────────────────────────┐│
-    ││1 @ 0 │0 @ 4                                    │1 @ 4                                    │~~~~~ │6 @ 4                                    │7 @ 4                                    ││
-    ││      │axis 5                                   │axis 5                                   │axis 5│axis 5                                   │axis 5                                   ││
-    │├──────┼─────────────────────────────────────────┼─────────────────────────────────────────┼──────┼─────────────────────────────────────────┼─────────────────────────────────────────┤│
-    ││0 @ 1 │ 5.54e+4  5.54e+4  ...  5.54e+4  5.54e+4 │ 5.54e+4  5.54e+4  ...  5.54e+4  5.54e+4 │ ...  │ 5.54e+4  5.54e+4  ...  5.55e+4  5.55e+4 │ 5.55e+4  5.55e+4  ...  5.55e+4  5.55e+4 ││
-    ││axis 2│ 5.59e+4  5.59e+4  ...  5.59e+4  5.59e+4 │ 5.59e+4  5.59e+4  ...  5.59e+4  5.59e+4 │      │ 5.59e+4  5.59e+4  ...  5.60e+4  5.60e+4 │ 5.60e+4  5.60e+4  ...  5.60e+4  5.60e+4 ││
-    ││      │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     │      │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     ││
-    ││      │ 5.99e+4  5.99e+4  ...  5.99e+4  5.99e+4 │ 5.99e+4  5.99e+4  ...  5.99e+4  5.99e+4 │      │ 6.00e+4  6.00e+4  ...  6.00e+4  6.00e+4 │ 6.00e+4  6.00e+4  ...  6.00e+4  6.00e+4 ││
-    ││      │ 6.04e+4  6.04e+4  ...  6.04e+4  6.04e+4 │ 6.04e+4  6.04e+4  ...  6.04e+4  6.04e+4 │      │ 6.05e+4  6.05e+4  ...  6.05e+4  6.05e+4 │ 6.05e+4  6.05e+4  ...  6.05e+4  6.05e+4 ││
-    │├──────┼─────────────────────────────────────────┼─────────────────────────────────────────┼──────┼─────────────────────────────────────────┼─────────────────────────────────────────┤│
-    ││1 @ 1 │ 6.09e+4  6.09e+4  ...  6.09e+4  6.09e+4 │ 6.09e+4  6.09e+4  ...  6.10e+4  6.10e+4 │ ...  │ 6.10e+4  6.10e+4  ...  6.10e+4  6.10e+4 │ 6.10e+4  6.10e+4  ...  6.10e+4  6.10e+4 ││
-    ││axis 2│ 6.14e+4  6.14e+4  ...  6.14e+4  6.14e+4 │ 6.14e+4  6.14e+4  ...  6.15e+4  6.15e+4 │      │ 6.15e+4  6.15e+4  ...  6.15e+4  6.15e+4 │ 6.15e+4  6.15e+4  ...  6.15e+4  6.15e+4 ││
-    ││      │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     │      │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     ││
-    ││      │ 6.55e+4  6.55e+4  ...  6.55e+4  6.55e+4 │ 6.55e+4  6.55e+4  ...  6.55e+4  6.55e+4 │      │ 6.55e+4  6.55e+4  ...  6.55e+4  6.55e+4 │ 6.55e+4  6.55e+4  ...  6.55e+4  6.55e+4 ││
-    ││      │ 6.60e+4  6.60e+4  ...  6.60e+4  6.60e+4 │ 6.60e+4  6.60e+4  ...  6.60e+4  6.60e+4 │      │ 6.60e+4  6.60e+4  ...  6.60e+4  6.60e+4 │ 6.60e+4  6.60e+4  ...  6.60e+4  6.60e+4 ││
-    │├──────┼─────────────────────────────────────────┼─────────────────────────────────────────┼──────┼─────────────────────────────────────────┼─────────────────────────────────────────┤│
-    ││~~~~~ │ ...                                     │ ...                                     │ ...  │ ...                                     │ ...                                     ││
-    ││axis 2│                                         │                                         │      │                                         │                                         ││
-    │├──────┼─────────────────────────────────────────┼─────────────────────────────────────────┼──────┼─────────────────────────────────────────┼─────────────────────────────────────────┤│
-    ││8 @ 1 │ 9.97e+4  9.97e+4  ...  9.97e+4  9.98e+4 │ 9.98e+4  9.98e+4  ...  9.98e+4  9.98e+4 │ ...  │ 9.98e+4  9.98e+4  ...  9.98e+4  9.98e+4 │ 9.98e+4  9.98e+4  ...  9.98e+4  9.98e+4 ││
-    ││axis 2│ 1.00e+5  1.00e+5  ...  1.00e+5  1.00e+5 │ 1.00e+5  1.00e+5  ...  1.00e+5  1.00e+5 │      │ 1.00e+5  1.00e+5  ...  1.00e+5  1.00e+5 │ 1.00e+5  1.00e+5  ...  1.00e+5  1.00e+5 ││
-    ││      │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     │      │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     ││
-    ││      │ 1.04e+5  1.04e+5  ...  1.04e+5  1.04e+5 │ 1.04e+5  1.04e+5  ...  1.04e+5  1.04e+5 │      │ 1.04e+5  1.04e+5  ...  1.04e+5  1.04e+5 │ 1.04e+5  1.04e+5  ...  1.04e+5  1.04e+5 ││
-    ││      │ 1.04e+5  1.04e+5  ...  1.04e+5  1.04e+5 │ 1.04e+5  1.04e+5  ...  1.04e+5  1.04e+5 │      │ 1.04e+5  1.04e+5  ...  1.04e+5  1.04e+5 │ 1.04e+5  1.04e+5  ...  1.04e+5  1.04e+5 ││
-    │├──────┼─────────────────────────────────────────┼─────────────────────────────────────────┼──────┼─────────────────────────────────────────┼─────────────────────────────────────────┤│
-    ││9 @ 1 │ 1.05e+5  1.05e+5  ...  1.05e+5  1.05e+5 │ 1.05e+5  1.05e+5  ...  1.05e+5  1.05e+5 │ ...  │ 1.05e+5  1.05e+5  ...  1.05e+5  1.05e+5 │ 1.05e+5  1.05e+5  ...  1.05e+5  1.05e+5 ││
-    ││axis 2│ 1.05e+5  1.05e+5  ...  1.05e+5  1.05e+5 │ 1.05e+5  1.05e+5  ...  1.05e+5  1.05e+5 │      │ 1.05e+5  1.05e+5  ...  1.05e+5  1.05e+5 │ 1.05e+5  1.05e+5  ...  1.05e+5  1.05e+5 ││
-    ││      │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     │      │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     ││
-    ││      │ 1.09e+5  1.09e+5  ...  1.09e+5  1.09e+5 │ 1.09e+5  1.09e+5  ...  1.09e+5  1.09e+5 │      │ 1.09e+5  1.09e+5  ...  1.09e+5  1.09e+5 │ 1.09e+5  1.09e+5  ...  1.09e+5  1.09e+5 ││
-    ││      │ 1.10e+5  1.10e+5  ...  1.10e+5  1.10e+5 │ 1.10e+5  1.10e+5  ...  1.10e+5  1.10e+5 │      │ 1.10e+5  1.10e+5  ...  1.10e+5  1.10e+5 │ 1.10e+5  1.10e+5  ...  1.10e+5  1.10e+5 ││
-    │└──────┴─────────────────────────────────────────┴─────────────────────────────────────────┴──────┴─────────────────────────────────────────┴─────────────────────────────────────────┘│
-    ├───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┤
-    │ ...                                                                                                                                                                                   │
-    ├───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┤
-    │┌──────┬─────────────────────────────────────────┬─────────────────────────────────────────┬──────┬─────────────────────────────────────────┬─────────────────────────────────────────┐│
-    ││4 @ 0 │0 @ 4                                    │1 @ 4                                    │~~~~~ │6 @ 4                                    │7 @ 4                                    ││
-    ││      │axis 5                                   │axis 5                                   │axis 5│axis 5                                   │axis 5                                   ││
-    │├──────┼─────────────────────────────────────────┼─────────────────────────────────────────┼──────┼─────────────────────────────────────────┼─────────────────────────────────────────┤│
-    ││0 @ 1 │ 2.21e+5  2.21e+5  ...  2.21e+5  2.21e+5 │ 2.21e+5  2.21e+5  ...  2.21e+5  2.21e+5 │ ...  │ 2.21e+5  2.21e+5  ...  2.21e+5  2.21e+5 │ 2.21e+5  2.21e+5  ...  2.21e+5  2.21e+5 ││
-    ││axis 2│ 2.22e+5  2.22e+5  ...  2.22e+5  2.22e+5 │ 2.22e+5  2.22e+5  ...  2.22e+5  2.22e+5 │      │ 2.22e+5  2.22e+5  ...  2.22e+5  2.22e+5 │ 2.22e+5  2.22e+5  ...  2.22e+5  2.22e+5 ││
-    ││      │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     │      │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     ││
-    ││      │ 2.26e+5  2.26e+5  ...  2.26e+5  2.26e+5 │ 2.26e+5  2.26e+5  ...  2.26e+5  2.26e+5 │      │ 2.26e+5  2.26e+5  ...  2.26e+5  2.26e+5 │ 2.26e+5  2.26e+5  ...  2.26e+5  2.26e+5 ││
-    ││      │ 2.26e+5  2.26e+5  ...  2.26e+5  2.26e+5 │ 2.26e+5  2.26e+5  ...  2.26e+5  2.26e+5 │      │ 2.26e+5  2.26e+5  ...  2.26e+5  2.26e+5 │ 2.26e+5  2.26e+5  ...  2.26e+5  2.26e+5 ││
-    │├──────┼─────────────────────────────────────────┼─────────────────────────────────────────┼──────┼─────────────────────────────────────────┼─────────────────────────────────────────┤│
-    ││1 @ 1 │ 2.27e+5  2.27e+5  ...  2.27e+5  2.27e+5 │ 2.27e+5  2.27e+5  ...  2.27e+5  2.27e+5 │ ...  │ 2.27e+5  2.27e+5  ...  2.27e+5  2.27e+5 │ 2.27e+5  2.27e+5  ...  2.27e+5  2.27e+5 ││
-    ││axis 2│ 2.27e+5  2.27e+5  ...  2.27e+5  2.27e+5 │ 2.27e+5  2.27e+5  ...  2.27e+5  2.27e+5 │      │ 2.27e+5  2.27e+5  ...  2.27e+5  2.27e+5 │ 2.27e+5  2.27e+5  ...  2.27e+5  2.27e+5 ││
-    ││      │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     │      │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     ││
-    ││      │ 2.31e+5  2.31e+5  ...  2.31e+5  2.31e+5 │ 2.31e+5  2.31e+5  ...  2.31e+5  2.31e+5 │      │ 2.31e+5  2.31e+5  ...  2.31e+5  2.31e+5 │ 2.31e+5  2.31e+5  ...  2.31e+5  2.31e+5 ││
-    ││      │ 2.32e+5  2.32e+5  ...  2.32e+5  2.32e+5 │ 2.32e+5  2.32e+5  ...  2.32e+5  2.32e+5 │      │ 2.32e+5  2.32e+5  ...  2.32e+5  2.32e+5 │ 2.32e+5  2.32e+5  ...  2.32e+5  2.32e+5 ││
-    │├──────┼─────────────────────────────────────────┼─────────────────────────────────────────┼──────┼─────────────────────────────────────────┼─────────────────────────────────────────┤│
-    ││~~~~~ │ ...                                     │ ...                                     │ ...  │ ...                                     │ ...                                     ││
-    ││axis 2│                                         │                                         │      │                                         │                                         ││
-    │├──────┼─────────────────────────────────────────┼─────────────────────────────────────────┼──────┼─────────────────────────────────────────┼─────────────────────────────────────────┤│
-    ││8 @ 1 │ 2.66e+5  2.66e+5  ...  2.66e+5  2.66e+5 │ 2.66e+5  2.66e+5  ...  2.66e+5  2.66e+5 │ ...  │ 2.66e+5  2.66e+5  ...  2.66e+5  2.66e+5 │ 2.66e+5  2.66e+5  ...  2.66e+5  2.66e+5 ││
-    ││axis 2│ 2.66e+5  2.66e+5  ...  2.66e+5  2.66e+5 │ 2.66e+5  2.66e+5  ...  2.66e+5  2.66e+5 │      │ 2.66e+5  2.66e+5  ...  2.66e+5  2.66e+5 │ 2.66e+5  2.66e+5  ...  2.66e+5  2.66e+5 ││
-    ││      │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     │      │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     ││
-    ││      │ 2.70e+5  2.70e+5  ...  2.70e+5  2.70e+5 │ 2.70e+5  2.70e+5  ...  2.70e+5  2.70e+5 │      │ 2.70e+5  2.70e+5  ...  2.70e+5  2.70e+5 │ 2.70e+5  2.70e+5  ...  2.70e+5  2.70e+5 ││
-    ││      │ 2.71e+5  2.71e+5  ...  2.71e+5  2.71e+5 │ 2.71e+5  2.71e+5  ...  2.71e+5  2.71e+5 │      │ 2.71e+5  2.71e+5  ...  2.71e+5  2.71e+5 │ 2.71e+5  2.71e+5  ...  2.71e+5  2.71e+5 ││
-    │├──────┼─────────────────────────────────────────┼─────────────────────────────────────────┼──────┼─────────────────────────────────────────┼─────────────────────────────────────────┤│
-    ││9 @ 1 │ 2.71e+5  2.71e+5  ...  2.71e+5  2.71e+5 │ 2.71e+5  2.71e+5  ...  2.71e+5  2.71e+5 │ ...  │ 2.71e+5  2.71e+5  ...  2.71e+5  2.71e+5 │ 2.71e+5  2.71e+5  ...  2.71e+5  2.71e+5 ││
-    ││axis 2│ 2.72e+5  2.72e+5  ...  2.72e+5  2.72e+5 │ 2.72e+5  2.72e+5  ...  2.72e+5  2.72e+5 │      │ 2.72e+5  2.72e+5  ...  2.72e+5  2.72e+5 │ 2.72e+5  2.72e+5  ...  2.72e+5  2.72e+5 ││
-    ││      │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     │      │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     ││
-    ││      │ 2.76e+5  2.76e+5  ...  2.76e+5  2.76e+5 │ 2.76e+5  2.76e+5  ...  2.76e+5  2.76e+5 │      │ 2.76e+5  2.76e+5  ...  2.76e+5  2.76e+5 │ 2.76e+5  2.76e+5  ...  2.76e+5  2.76e+5 ││
-    ││      │ 2.76e+5  2.76e+5  ...  2.76e+5  2.76e+5 │ 2.76e+5  2.76e+5  ...  2.76e+5  2.76e+5 │      │ 2.76e+5  2.76e+5  ...  2.76e+5  2.76e+5 │ 2.76e+5  2.76e+5  ...  2.76e+5  2.76e+5 ││
-    │└──────┴─────────────────────────────────────────┴─────────────────────────────────────────┴──────┴─────────────────────────────────────────┴─────────────────────────────────────────┘│
-    ├───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┤
-    │┌──────┬─────────────────────────────────────────┬─────────────────────────────────────────┬──────┬─────────────────────────────────────────┬─────────────────────────────────────────┐│
-    ││5 @ 0 │0 @ 4                                    │1 @ 4                                    │~~~~~ │6 @ 4                                    │7 @ 4                                    ││
-    ││      │axis 5                                   │axis 5                                   │axis 5│axis 5                                   │axis 5                                   ││
-    │├──────┼─────────────────────────────────────────┼─────────────────────────────────────────┼──────┼─────────────────────────────────────────┼─────────────────────────────────────────┤│
-    ││0 @ 1 │ 2.77e+5  2.77e+5  ...  2.77e+5  2.77e+5 │ 2.77e+5  2.77e+5  ...  2.77e+5  2.77e+5 │ ...  │ 2.77e+5  2.77e+5  ...  2.77e+5  2.77e+5 │ 2.77e+5  2.77e+5  ...  2.77e+5  2.77e+5 ││
-    ││axis 2│ 2.77e+5  2.77e+5  ...  2.77e+5  2.77e+5 │ 2.77e+5  2.77e+5  ...  2.77e+5  2.77e+5 │      │ 2.77e+5  2.77e+5  ...  2.77e+5  2.77e+5 │ 2.77e+5  2.77e+5  ...  2.77e+5  2.77e+5 ││
-    ││      │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     │      │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     ││
-    ││      │ 2.81e+5  2.81e+5  ...  2.81e+5  2.81e+5 │ 2.81e+5  2.81e+5  ...  2.81e+5  2.81e+5 │      │ 2.81e+5  2.81e+5  ...  2.81e+5  2.81e+5 │ 2.81e+5  2.81e+5  ...  2.81e+5  2.81e+5 ││
-    ││      │ 2.82e+5  2.82e+5  ...  2.82e+5  2.82e+5 │ 2.82e+5  2.82e+5  ...  2.82e+5  2.82e+5 │      │ 2.82e+5  2.82e+5  ...  2.82e+5  2.82e+5 │ 2.82e+5  2.82e+5  ...  2.82e+5  2.82e+5 ││
-    │├──────┼─────────────────────────────────────────┼─────────────────────────────────────────┼──────┼─────────────────────────────────────────┼─────────────────────────────────────────┤│
-    ││1 @ 1 │ 2.82e+5  2.82e+5  ...  2.82e+5  2.82e+5 │ 2.82e+5  2.82e+5  ...  2.82e+5  2.82e+5 │ ...  │ 2.82e+5  2.82e+5  ...  2.82e+5  2.82e+5 │ 2.82e+5  2.82e+5  ...  2.82e+5  2.82e+5 ││
-    ││axis 2│ 2.83e+5  2.83e+5  ...  2.83e+5  2.83e+5 │ 2.83e+5  2.83e+5  ...  2.83e+5  2.83e+5 │      │ 2.83e+5  2.83e+5  ...  2.83e+5  2.83e+5 │ 2.83e+5  2.83e+5  ...  2.83e+5  2.83e+5 ││
-    ││      │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     │      │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     ││
-    ││      │ 2.87e+5  2.87e+5  ...  2.87e+5  2.87e+5 │ 2.87e+5  2.87e+5  ...  2.87e+5  2.87e+5 │      │ 2.87e+5  2.87e+5  ...  2.87e+5  2.87e+5 │ 2.87e+5  2.87e+5  ...  2.87e+5  2.87e+5 ││
-    ││      │ 2.87e+5  2.87e+5  ...  2.87e+5  2.87e+5 │ 2.87e+5  2.87e+5  ...  2.87e+5  2.87e+5 │      │ 2.87e+5  2.87e+5  ...  2.87e+5  2.87e+5 │ 2.87e+5  2.87e+5  ...  2.87e+5  2.87e+5 ││
-    │├──────┼─────────────────────────────────────────┼─────────────────────────────────────────┼──────┼─────────────────────────────────────────┼─────────────────────────────────────────┤│
-    ││~~~~~ │ ...                                     │ ...                                     │ ...  │ ...                                     │ ...                                     ││
-    ││axis 2│                                         │                                         │      │                                         │                                         ││
-    │├──────┼─────────────────────────────────────────┼─────────────────────────────────────────┼──────┼─────────────────────────────────────────┼─────────────────────────────────────────┤│
-    ││8 @ 1 │ 3.21e+5  3.21e+5  ...  3.21e+5  3.21e+5 │ 3.21e+5  3.21e+5  ...  3.21e+5  3.21e+5 │ ...  │ 3.21e+5  3.21e+5  ...  3.21e+5  3.21e+5 │ 3.21e+5  3.21e+5  ...  3.21e+5  3.21e+5 ││
-    ││axis 2│ 3.22e+5  3.22e+5  ...  3.22e+5  3.22e+5 │ 3.22e+5  3.22e+5  ...  3.22e+5  3.22e+5 │      │ 3.22e+5  3.22e+5  ...  3.22e+5  3.22e+5 │ 3.22e+5  3.22e+5  ...  3.22e+5  3.22e+5 ││
-    ││      │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     │      │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     ││
-    ││      │ 3.26e+5  3.26e+5  ...  3.26e+5  3.26e+5 │ 3.26e+5  3.26e+5  ...  3.26e+5  3.26e+5 │      │ 3.26e+5  3.26e+5  ...  3.26e+5  3.26e+5 │ 3.26e+5  3.26e+5  ...  3.26e+5  3.26e+5 ││
-    ││      │ 3.26e+5  3.26e+5  ...  3.26e+5  3.26e+5 │ 3.26e+5  3.26e+5  ...  3.26e+5  3.26e+5 │      │ 3.26e+5  3.26e+5  ...  3.26e+5  3.26e+5 │ 3.26e+5  3.26e+5  ...  3.26e+5  3.26e+5 ││
-    │├──────┼─────────────────────────────────────────┼─────────────────────────────────────────┼──────┼─────────────────────────────────────────┼─────────────────────────────────────────┤│
-    ││9 @ 1 │ 3.27e+5  3.27e+5  ...  3.27e+5  3.27e+5 │ 3.27e+5  3.27e+5  ...  3.27e+5  3.27e+5 │ ...  │ 3.27e+5  3.27e+5  ...  3.27e+5  3.27e+5 │ 3.27e+5  3.27e+5  ...  3.27e+5  3.27e+5 ││
-    ││axis 2│ 3.27e+5  3.27e+5  ...  3.27e+5  3.27e+5 │ 3.27e+5  3.27e+5  ...  3.27e+5  3.27e+5 │      │ 3.27e+5  3.27e+5  ...  3.27e+5  3.27e+5 │ 3.27e+5  3.27e+5  ...  3.27e+5  3.27e+5 ││
-    ││      │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     │      │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     ││
-    ││      │ 3.31e+5  3.31e+5  ...  3.31e+5  3.31e+5 │ 3.31e+5  3.31e+5  ...  3.31e+5  3.31e+5 │      │ 3.31e+5  3.31e+5  ...  3.31e+5  3.31e+5 │ 3.31e+5  3.31e+5  ...  3.31e+5  3.31e+5 ││
-    ││      │ 3.32e+5  3.32e+5  ...  3.32e+5  3.32e+5 │ 3.32e+5  3.32e+5  ...  3.32e+5  3.32e+5 │      │ 3.32e+5  3.32e+5  ...  3.32e+5  3.32e+5 │ 3.32e+5  3.32e+5  ...  3.32e+5  3.32e+5 ││
-    │└──────┴─────────────────────────────────────────┴─────────────────────────────────────────┴──────┴─────────────────────────────────────────┴─────────────────────────────────────────┘│
-    └───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
-    |}];
+    {| [0]: r6x10x11x7x8x9 shape 0:6|3:7,4:8,5:9->1:10,2:11  <virtual> |}];
Tensor.print ~with_code:false ~with_grad:false `Default hoo;
(* Disable line wrapping for viewing the output. In VSCode: `View: Toggle Word Wrap`. *)
[%expect
File "test/einsum_trivia.ml", line 1, characters 0-0:
/usr/bin/git --no-pager diff --no-index --color=always -u _build/default/test/einsum_trivia.ml _build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test/einsum_trivia.ml.corrected
diff --git a/_build/default/test/einsum_trivia.ml b/_build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test/einsum_trivia.ml.corrected
index 35a36fa..25712f7 100644
--- a/_build/default/test/einsum_trivia.ml
+++ b/_build/.sandbox/3bb8c7a64a394ab9b780d7ab1d8a0753/default/test/einsum_trivia.ml.corrected
@@ -28,20 +28,7 @@ let%expect_test "einsum1 permute axes" =
Train.forward_and_forget backend ctx ho;
Tensor.print ~with_code:false ~with_grad:false `Default @@ hey;
[%expect
-    {|
-    ┌─────────────────────────────────────────────────────────────┐
-    │[0]: r2x4x3 shape 0:2|2:3->1:4                               │
-    │┌──────┬────────────────────────┬───────────────────────────┐│
-    ││      │0 @ 0                   │1 @ 0                      ││
-    ││      │axis 2                  │axis 2                     ││
-    │├──────┼────────────────────────┼───────────────────────────┤│
-    ││axis 1│ 0.00  1.00     2.00    │ 1.20e+1  1.30e+1  1.40e+1 ││
-    ││      │ 3.00  4.00     5.00    │ 1.50e+1  1.60e+1  1.70e+1 ││
-    ││      │ 6.00  7.00     8.00    │ 1.80e+1  1.90e+1  2.00e+1 ││
-    ││      │ 9.00  1.00e+1  1.10e+1 │ 2.10e+1  2.20e+1  2.30e+1 ││
-    │└──────┴────────────────────────┴───────────────────────────┘│
-    └─────────────────────────────────────────────────────────────┘
-    |}];
+    {| [0]: r2x4x3 shape 0:2|2:3->1:4  <virtual> |}];
Tensor.print ~with_code:false ~with_grad:false `Default @@ ho;
[%expect
{|
@@ -64,106 +51,7 @@ let%expect_test "einsum1 permute axes" =
Train.forward_and_forget backend ctx ho2;
Tensor.print ~with_code:false ~with_grad:false `Default @@ hey2;
[%expect
-    {|
-    ┌────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
-    │[2]: r2x3x6x7x4x5 shape 0:2,1:3|4:4,5:5->2:6,3:7                                                                                                                                                │
-    │┌──────┬─────────────────────────────────────────────┬─────────────────────────────────────────────┬─────────────────────────────────────────────┬─────────────────────────────────────────────┐│
-    ││0 @ 1 │0 @ 4                                        │1 @ 4                                        │2 @ 4                                        │3 @ 4                                        ││
-    ││      │axis 5                                       │axis 5                                       │axis 5                                       │axis 5                                       ││
-    │├──────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┤│
-    ││0 @ 2 │ 0.00     1.00     2.00     3.00     4.00    │ 5.00     6.00     7.00     8.00     9.00    │ 1.00e+1  1.10e+1  1.20e+1  1.30e+1  1.40e+1 │ 1.50e+1  1.60e+1  1.70e+1  1.80e+1  1.90e+1 ││
-    ││axis 3│ 2.00e+1  2.10e+1  2.20e+1  2.30e+1  2.40e+1 │ 2.50e+1  2.60e+1  2.70e+1  2.80e+1  2.90e+1 │ 3.00e+1  3.10e+1  3.20e+1  3.30e+1  3.40e+1 │ 3.50e+1  3.60e+1  3.70e+1  3.80e+1  3.90e+1 ││
-    ││      │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     ││
-    ││      │ 1.00e+2  1.01e+2  1.02e+2  1.03e+2  1.04e+2 │ 1.05e+2  1.06e+2  1.07e+2  1.08e+2  1.09e+2 │ 1.10e+2  1.11e+2  1.12e+2  1.13e+2  1.14e+2 │ 1.15e+2  1.16e+2  1.17e+2  1.18e+2  1.19e+2 ││
-    ││      │ 1.20e+2  1.21e+2  1.22e+2  1.23e+2  1.24e+2 │ 1.25e+2  1.26e+2  1.27e+2  1.28e+2  1.29e+2 │ 1.30e+2  1.31e+2  1.32e+2  1.33e+2  1.34e+2 │ 1.35e+2  1.36e+2  1.37e+2  1.38e+2  1.39e+2 ││
-    │├──────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┤│
-    ││1 @ 2 │ 1.40e+2  1.41e+2  1.42e+2  1.43e+2  1.44e+2 │ 1.45e+2  1.46e+2  1.47e+2  1.48e+2  1.49e+2 │ 1.50e+2  1.51e+2  1.52e+2  1.53e+2  1.54e+2 │ 1.55e+2  1.56e+2  1.57e+2  1.58e+2  1.59e+2 ││
-    ││axis 3│ 1.60e+2  1.61e+2  1.62e+2  1.63e+2  1.64e+2 │ 1.65e+2  1.66e+2  1.67e+2  1.68e+2  1.69e+2 │ 1.70e+2  1.71e+2  1.72e+2  1.73e+2  1.74e+2 │ 1.75e+2  1.76e+2  1.77e+2  1.78e+2  1.79e+2 ││
-    ││      │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     ││
-    ││      │ 2.40e+2  2.41e+2  2.42e+2  2.43e+2  2.44e+2 │ 2.45e+2  2.46e+2  2.47e+2  2.48e+2  2.49e+2 │ 2.50e+2  2.51e+2  2.52e+2  2.53e+2  2.54e+2 │ 2.55e+2  2.56e+2  2.57e+2  2.58e+2  2.59e+2 ││
-    ││      │ 2.60e+2  2.61e+2  2.62e+2  2.63e+2  2.64e+2 │ 2.65e+2  2.66e+2  2.67e+2  2.68e+2  2.69e+2 │ 2.70e+2  2.71e+2  2.72e+2  2.73e+2  2.74e+2 │ 2.75e+2  2.76e+2  2.77e+2  2.78e+2  2.79e+2 ││
-    │├──────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┤│
-    ││~~~~~ │ ...                                         │ ...                                         │ ...                                         │ ...                                         ││
-    ││axis 3│                                             │                                             │                                             │                                             ││
-    │├──────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┤│
-    ││4 @ 2 │ 5.60e+2  5.61e+2  5.62e+2  5.63e+2  5.64e+2 │ 5.65e+2  5.66e+2  5.67e+2  5.68e+2  5.69e+2 │ 5.70e+2  5.71e+2  5.72e+2  5.73e+2  5.74e+2 │ 5.75e+2  5.76e+2  5.77e+2  5.78e+2  5.79e+2 ││
-    ││axis 3│ 5.80e+2  5.81e+2  5.82e+2  5.83e+2  5.84e+2 │ 5.85e+2  5.86e+2  5.87e+2  5.88e+2  5.89e+2 │ 5.90e+2  5.91e+2  5.92e+2  5.93e+2  5.94e+2 │ 5.95e+2  5.96e+2  5.97e+2  5.98e+2  5.99e+2 ││
-    ││      │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     ││
-    ││      │ 6.60e+2  6.61e+2  6.62e+2  6.63e+2  6.64e+2 │ 6.65e+2  6.66e+2  6.67e+2  6.68e+2  6.69e+2 │ 6.70e+2  6.71e+2  6.72e+2  6.73e+2  6.74e+2 │ 6.75e+2  6.76e+2  6.77e+2  6.78e+2  6.79e+2 ││
-    ││      │ 6.80e+2  6.81e+2  6.82e+2  6.83e+2  6.84e+2 │ 6.85e+2  6.86e+2  6.87e+2  6.88e+2  6.89e+2 │ 6.90e+2  6.91e+2  6.92e+2  6.93e+2  6.94e+2 │ 6.95e+2  6.96e+2  6.97e+2  6.98e+2  6.99e+2 ││
-    │├──────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┤│
-    ││5 @ 2 │ 7.00e+2  7.01e+2  7.02e+2  7.03e+2  7.04e+2 │ 7.05e+2  7.06e+2  7.07e+2  7.08e+2  7.09e+2 │ 7.10e+2  7.11e+2  7.12e+2  7.13e+2  7.14e+2 │ 7.15e+2  7.16e+2  7.17e+2  7.18e+2  7.19e+2 ││
-    ││axis 3│ 7.20e+2  7.21e+2  7.22e+2  7.23e+2  7.24e+2 │ 7.25e+2  7.26e+2  7.27e+2  7.28e+2  7.29e+2 │ 7.30e+2  7.31e+2  7.32e+2  7.33e+2  7.34e+2 │ 7.35e+2  7.36e+2  7.37e+2  7.38e+2  7.39e+2 ││
-    ││      │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     ││
-    ││      │ 8.00e+2  8.01e+2  8.02e+2  8.03e+2  8.04e+2 │ 8.05e+2  8.06e+2  8.07e+2  8.08e+2  8.09e+2 │ 8.10e+2  8.11e+2  8.12e+2  8.13e+2  8.14e+2 │ 8.15e+2  8.16e+2  8.17e+2  8.18e+2  8.19e+2 ││
-    ││      │ 8.20e+2  8.21e+2  8.22e+2  8.23e+2  8.24e+2 │ 8.25e+2  8.26e+2  8.27e+2  8.28e+2  8.29e+2 │ 8.30e+2  8.31e+2  8.32e+2  8.33e+2  8.34e+2 │ 8.35e+2  8.36e+2  8.37e+2  8.38e+2  8.39e+2 ││
-    │└──────┴─────────────────────────────────────────────┴─────────────────────────────────────────────┴─────────────────────────────────────────────┴─────────────────────────────────────────────┘│
-    ├────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┤
-    │┌──────┬─────────────────────────────────────────────┬─────────────────────────────────────────────┬─────────────────────────────────────────────┬─────────────────────────────────────────────┐│
-    ││1 @ 1 │0 @ 4                                        │1 @ 4                                        │2 @ 4                                        │3 @ 4                                        ││
-    ││      │axis 5                                       │axis 5                                       │axis 5                                       │axis 5                                       ││
-    │├──────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┤│
-    ││0 @ 2 │ 8.40e+2  8.41e+2  8.42e+2  8.43e+2  8.44e+2 │ 8.45e+2  8.46e+2  8.47e+2  8.48e+2  8.49e+2 │ 8.50e+2  8.51e+2  8.52e+2  8.53e+2  8.54e+2 │ 8.55e+2  8.56e+2  8.57e+2  8.58e+2  8.59e+2 ││
-    ││axis 3│ 8.60e+2  8.61e+2  8.62e+2  8.63e+2  8.64e+2 │ 8.65e+2  8.66e+2  8.67e+2  8.68e+2  8.69e+2 │ 8.70e+2  8.71e+2  8.72e+2  8.73e+2  8.74e+2 │ 8.75e+2  8.76e+2  8.77e+2  8.78e+2  8.79e+2 ││
-    ││      │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     ││
-    ││      │ 9.40e+2  9.41e+2  9.42e+2  9.43e+2  9.44e+2 │ 9.45e+2  9.46e+2  9.47e+2  9.48e+2  9.49e+2 │ 9.50e+2  9.51e+2  9.52e+2  9.53e+2  9.54e+2 │ 9.55e+2  9.56e+2  9.57e+2  9.58e+2  9.59e+2 ││
-    ││      │ 9.60e+2  9.61e+2  9.62e+2  9.63e+2  9.64e+2 │ 9.65e+2  9.66e+2  9.67e+2  9.68e+2  9.69e+2 │ 9.70e+2  9.71e+2  9.72e+2  9.73e+2  9.74e+2 │ 9.75e+2  9.76e+2  9.77e+2  9.78e+2  9.79e+2 ││
-    │├──────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┤│
-    ││1 @ 2 │ 9.80e+2  9.81e+2  9.82e+2  9.83e+2  9.84e+2 │ 9.85e+2  9.86e+2  9.87e+2  9.88e+2  9.89e+2 │ 9.90e+2  9.91e+2  9.92e+2  9.93e+2  9.94e+2 │ 9.95e+2  9.96e+2  9.97e+2  9.98e+2  9.99e+2 ││
-    ││axis 3│ 1.00e+3  1.00e+3  1.00e+3  1.00e+3  1.00e+3 │ 1.00e+3  1.00e+3  1.00e+3  1.00e+3  1.00e+3 │ 1.01e+3  1.01e+3  1.01e+3  1.01e+3  1.01e+3 │ 1.01e+3  1.01e+3  1.01e+3  1.01e+3  1.01e+3 ││
-    ││      │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     ││
-    ││      │ 1.08e+3  1.08e+3  1.08e+3  1.08e+3  1.08e+3 │ 1.08e+3  1.08e+3  1.08e+3  1.08e+3  1.08e+3 │ 1.09e+3  1.09e+3  1.09e+3  1.09e+3  1.09e+3 │ 1.09e+3  1.09e+3  1.09e+3  1.09e+3  1.09e+3 ││
-    ││      │ 1.10e+3  1.10e+3  1.10e+3  1.10e+3  1.10e+3 │ 1.10e+3  1.10e+3  1.10e+3  1.10e+3  1.10e+3 │ 1.11e+3  1.11e+3  1.11e+3  1.11e+3  1.11e+3 │ 1.11e+3  1.11e+3  1.11e+3  1.11e+3  1.11e+3 ││
-    │├──────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┤│
-    ││~~~~~ │ ...                                         │ ...                                         │ ...                                         │ ...                                         ││
-    ││axis 3│                                             │                                             │                                             │                                             ││
-    │├──────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┤│
-    ││4 @ 2 │ 1.40e+3  1.40e+3  1.40e+3  1.40e+3  1.40e+3 │ 1.40e+3  1.40e+3  1.40e+3  1.40e+3  1.40e+3 │ 1.41e+3  1.41e+3  1.41e+3  1.41e+3  1.41e+3 │ 1.41e+3  1.41e+3  1.41e+3  1.41e+3  1.41e+3 ││
-    ││axis 3│ 1.42e+3  1.42e+3  1.42e+3  1.42e+3  1.42e+3 │ 1.42e+3  1.42e+3  1.42e+3  1.42e+3  1.42e+3 │ 1.43e+3  1.43e+3  1.43e+3  1.43e+3  1.43e+3 │ 1.43e+3  1.43e+3  1.43e+3  1.43e+3  1.43e+3 ││
-    ││      │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     ││
-    ││      │ 1.50e+3  1.50e+3  1.50e+3  1.50e+3  1.50e+3 │ 1.50e+3  1.50e+3  1.50e+3  1.50e+3  1.50e+3 │ 1.51e+3  1.51e+3  1.51e+3  1.51e+3  1.51e+3 │ 1.51e+3  1.51e+3  1.51e+3  1.51e+3  1.51e+3 ││
-    ││      │ 1.52e+3  1.52e+3  1.52e+3  1.52e+3  1.52e+3 │ 1.52e+3  1.52e+3  1.52e+3  1.52e+3  1.52e+3 │ 1.53e+3  1.53e+3  1.53e+3  1.53e+3  1.53e+3 │ 1.53e+3  1.53e+3  1.53e+3  1.53e+3  1.53e+3 ││
-    │├──────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┤│
-    ││5 @ 2 │ 1.54e+3  1.54e+3  1.54e+3  1.54e+3  1.54e+3 │ 1.54e+3  1.54e+3  1.54e+3  1.54e+3  1.54e+3 │ 1.55e+3  1.55e+3  1.55e+3  1.55e+3  1.55e+3 │ 1.55e+3  1.55e+3  1.55e+3  1.55e+3  1.55e+3 ││
-    ││axis 3│ 1.56e+3  1.56e+3  1.56e+3  1.56e+3  1.56e+3 │ 1.56e+3  1.56e+3  1.56e+3  1.56e+3  1.56e+3 │ 1.57e+3  1.57e+3  1.57e+3  1.57e+3  1.57e+3 │ 1.57e+3  1.57e+3  1.57e+3  1.57e+3  1.57e+3 ││
-    ││      │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     ││
-    ││      │ 1.64e+3  1.64e+3  1.64e+3  1.64e+3  1.64e+3 │ 1.64e+3  1.64e+3  1.64e+3  1.64e+3  1.64e+3 │ 1.65e+3  1.65e+3  1.65e+3  1.65e+3  1.65e+3 │ 1.65e+3  1.65e+3  1.65e+3  1.65e+3  1.65e+3 ││
-    ││      │ 1.66e+3  1.66e+3  1.66e+3  1.66e+3  1.66e+3 │ 1.66e+3  1.66e+3  1.66e+3  1.66e+3  1.66e+3 │ 1.67e+3  1.67e+3  1.67e+3  1.67e+3  1.67e+3 │ 1.67e+3  1.67e+3  1.67e+3  1.67e+3  1.67e+3 ││
-    │└──────┴─────────────────────────────────────────────┴─────────────────────────────────────────────┴─────────────────────────────────────────────┴─────────────────────────────────────────────┘│
-    ├────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┤
-    │┌──────┬─────────────────────────────────────────────┬─────────────────────────────────────────────┬─────────────────────────────────────────────┬─────────────────────────────────────────────┐│
-    ││2 @ 1 │0 @ 4                                        │1 @ 4                                        │2 @ 4                                        │3 @ 4                                        ││
-    ││      │axis 5                                       │axis 5                                       │axis 5                                       │axis 5                                       ││
-    │├──────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┤│
-    ││0 @ 2 │ 1.68e+3  1.68e+3  1.68e+3  1.68e+3  1.68e+3 │ 1.68e+3  1.68e+3  1.68e+3  1.68e+3  1.68e+3 │ 1.69e+3  1.69e+3  1.69e+3  1.69e+3  1.69e+3 │ 1.69e+3  1.69e+3  1.69e+3  1.69e+3  1.69e+3 ││
-    ││axis 3│ 1.70e+3  1.70e+3  1.70e+3  1.70e+3  1.70e+3 │ 1.70e+3  1.70e+3  1.70e+3  1.70e+3  1.70e+3 │ 1.71e+3  1.71e+3  1.71e+3  1.71e+3  1.71e+3 │ 1.71e+3  1.71e+3  1.71e+3  1.71e+3  1.71e+3 ││
-    ││      │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     ││
-    ││      │ 1.78e+3  1.78e+3  1.78e+3  1.78e+3  1.78e+3 │ 1.78e+3  1.78e+3  1.78e+3  1.78e+3  1.78e+3 │ 1.79e+3  1.79e+3  1.79e+3  1.79e+3  1.79e+3 │ 1.79e+3  1.79e+3  1.79e+3  1.79e+3  1.79e+3 ││
-    ││      │ 1.80e+3  1.80e+3  1.80e+3  1.80e+3  1.80e+3 │ 1.80e+3  1.80e+3  1.80e+3  1.80e+3  1.80e+3 │ 1.81e+3  1.81e+3  1.81e+3  1.81e+3  1.81e+3 │ 1.81e+3  1.81e+3  1.81e+3  1.81e+3  1.81e+3 ││
-    │├──────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┤│
-    ││1 @ 2 │ 1.82e+3  1.82e+3  1.82e+3  1.82e+3  1.82e+3 │ 1.82e+3  1.82e+3  1.82e+3  1.82e+3  1.82e+3 │ 1.83e+3  1.83e+3  1.83e+3  1.83e+3  1.83e+3 │ 1.83e+3  1.83e+3  1.83e+3  1.83e+3  1.83e+3 ││
-    ││axis 3│ 1.84e+3  1.84e+3  1.84e+3  1.84e+3  1.84e+3 │ 1.84e+3  1.84e+3  1.84e+3  1.84e+3  1.84e+3 │ 1.85e+3  1.85e+3  1.85e+3  1.85e+3  1.85e+3 │ 1.85e+3  1.85e+3  1.85e+3  1.85e+3  1.85e+3 ││
-    ││      │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     ││
-    ││      │ 1.92e+3  1.92e+3  1.92e+3  1.92e+3  1.92e+3 │ 1.92e+3  1.92e+3  1.92e+3  1.92e+3  1.92e+3 │ 1.93e+3  1.93e+3  1.93e+3  1.93e+3  1.93e+3 │ 1.93e+3  1.93e+3  1.93e+3  1.93e+3  1.93e+3 ││
-    ││      │ 1.94e+3  1.94e+3  1.94e+3  1.94e+3  1.94e+3 │ 1.94e+3  1.94e+3  1.94e+3  1.94e+3  1.94e+3 │ 1.95e+3  1.95e+3  1.95e+3  1.95e+3  1.95e+3 │ 1.95e+3  1.95e+3  1.95e+3  1.95e+3  1.95e+3 ││
-    │├──────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┤│
-    ││~~~~~ │ ...                                         │ ...                                         │ ...                                         │ ...                                         ││
-    ││axis 3│                                             │                                             │                                             │                                             ││
-    │├──────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┼────────────────────────────────────────────┼─────────────────────────────────────────────┤│
-    ││4 @ 2 │ 2.24e+3  2.24e+3  2.24e+3  2.24e+3  2.24e+3 │ 2.24e+3  2.24e+3  2.24e+3  2.24e+3  2.24e+3 │ 2.25e+3  2.25e+3  2.25e+3  2.25e+3  2.25e+3 │ 2.25e+3  2.25e+3  2.25e+3  2.25e+3  2.25e+3 ││
-    ││axis 3│ 2.26e+3  2.26e+3  2.26e+3  2.26e+3  2.26e+3 │ 2.26e+3  2.26e+3  2.26e+3  2.26e+3  2.26e+3 │ 2.27e+3  2.27e+3  2.27e+3  2.27e+3  2.27e+3 │ 2.27e+3  2.27e+3  2.27e+3  2.27e+3  2.27e+3 ││
-    ││      │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     ││
-    ││      │ 2.34e+3  2.34e+3  2.34e+3  2.34e+3  2.34e+3 │ 2.34e+3  2.34e+3  2.34e+3  2.34e+3  2.34e+3 │ 2.35e+3  2.35e+3  2.35e+3  2.35e+3  2.35e+3 │ 2.35e+3  2.35e+3  2.35e+3  2.35e+3  2.35e+3 ││
-    ││      │ 2.36e+3  2.36e+3  2.36e+3  2.36e+3  2.36e+3 │ 2.36e+3  2.36e+3  2.36e+3  2.36e+3  2.36e+3 │ 2.37e+3  2.37e+3  2.37e+3  2.37e+3  2.37e+3 │ 2.37e+3  2.37e+3  2.37e+3  2.37e+3  2.37e+3 ││
-    │├──────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┤│
-    ││5 @ 2 │ 2.38e+3  2.38e+3  2.38e+3  2.38e+3  2.38e+3 │ 2.38e+3  2.38e+3  2.38e+3  2.38e+3  2.38e+3 │ 2.39e+3  2.39e+3  2.39e+3  2.39e+3  2.39e+3 │ 2.39e+3  2.39e+3  2.39e+3  2.39e+3  2.39e+3 ││
-    ││axis 3│ 2.40e+3  2.40e+3  2.40e+3  2.40e+3  2.40e+3 │ 2.40e+3  2.40e+3  2.40e+3  2.40e+3  2.40e+3 │ 2.41e+3  2.41e+3  2.41e+3  2.41e+3  2.41e+3 │ 2.41e+3  2.41e+3  2.41e+3  2.41e+3  2.41e+3 ││
-    ││      │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     │ ...      ...      ...      ...      ...     ││
-    ││      │ 2.48e+3  2.48e+3  2.48e+3  2.48e+3  2.48e+3 │ 2.48e+3  2.48e+3  2.48e+3  2.48e+3  2.48e+3 │ 2.49e+3  2.49e+3  2.49e+3  2.49e+3  2.49e+3 │ 2.49e+3  2.49e+3  2.49e+3  2.49e+3  2.49e+3 ││
-    ││      │ 2.50e+3  2.50e+3  2.50e+3  2.50e+3  2.50e+3 │ 2.50e+3  2.50e+3  2.50e+3  2.50e+3  2.50e+3 │ 2.51e+3  2.51e+3  2.51e+3  2.51e+3  2.51e+3 │ 2.51e+3  2.51e+3  2.51e+3  2.51e+3  2.51e+3 ││
-    │└──────┴─────────────────────────────────────────────┴─────────────────────────────────────────────┴─────────────────────────────────────────────┴─────────────────────────────────────────────┘│
-    └────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
-    |}];
+    {| [2]: r2x3x6x7x4x5 shape 0:2,1:3|4:4,5:5->2:6,3:7  <virtual> |}];
Tensor.print ~with_code:false ~with_grad:false `Default @@ ho2;
[%expect
{|
@@ -292,20 +180,7 @@ let%expect_test "einsum1 sum out axes" =
Train.forward_and_forget backend ctx ho;
Tensor.print ~with_code:false ~with_grad:false `Default @@ hey;
[%expect
-    {|
-    ┌─────────────────────────────────────────────────────────────┐
-    │[0]: r2x4x3 shape 0:2|2:3->1:4                               │
-    │┌──────┬────────────────────────┬───────────────────────────┐│
-    ││      │0 @ 0                   │1 @ 0                      ││
-    ││      │axis 2                  │axis 2                     ││
-    │├──────┼────────────────────────┼───────────────────────────┤│
-    ││axis 1│ 0.00  1.00     2.00    │ 1.20e+1  1.30e+1  1.40e+1 ││
-    ││      │ 3.00  4.00     5.00    │ 1.50e+1  1.60e+1  1.70e+1 ││
-    ││      │ 6.00  7.00     8.00    │ 1.80e+1  1.90e+1  2.00e+1 ││
-    ││      │ 9.00  1.00e+1  1.10e+1 │ 2.10e+1  2.20e+1  2.30e+1 ││
-    │└──────┴────────────────────────┴───────────────────────────┘│
-    └─────────────────────────────────────────────────────────────┘
-    |}];
+    {| [0]: r2x4x3 shape 0:2|2:3->1:4  <virtual> |}];
Tensor.print ~with_code:false ~with_grad:false `Default @@ ho;
[%expect
{|
@@ -364,28 +239,10 @@ let%expect_test "einsum outer product" =
Train.forward_and_forget backend ctx c;
Tensor.print ~with_code:false ~with_grad:false `Default @@ a;
[%expect
-    {|
-    ┌──────────────────┐
-    │[0]: r2 shape 0:2 │
-    │┌┬────────────┐   │
-    │││axis 0      │   │
-    │├┼────────────┤   │
-    │││ 0.00  1.00 │   │
-    │└┴────────────┘   │
-    └──────────────────┘
-    |}];
+    {| [0]: r2 shape 0:2  <virtual> |}];
Tensor.print ~with_code:false ~with_grad:false `Default @@ b;
[%expect
-    {|
-    ┌─────────────────────┐
-    │[1]: r3 shape 0:3    │
-    │┌┬──────────────────┐│
-    │││axis 0            ││
-    │├┼──────────────────┤│
-    │││ 0.00  1.00  2.00 ││
-    │└┴──────────────────┘│
-    └─────────────────────┘
-    |}];
+    {| [1]: r3 shape 0:3  <virtual> |}];
Tensor.print ~with_code:false ~with_grad:false `Default @@ c;
[%expect
{|
@@ -406,37 +263,10 @@ let%expect_test "einsum outer product" =
Train.forward_and_forget backend ctx c;
Tensor.print ~with_code:false ~with_grad:false `Default @@ a;
[%expect
-    {|
-    ┌─────────────────────────────────────────────────────────────┐
-    │[5]: r2x4x3 shape 0:2|2:3->1:4                               │
-    │┌──────┬────────────────────────┬───────────────────────────┐│
-    ││      │0 @ 0                   │1 @ 0                      ││
-    ││      │axis 2                  │axis 2                     ││
-    │├──────┼────────────────────────┼───────────────────────────┤│
-    ││axis 1│ 0.00  1.00     2.00    │ 1.20e+1  1.30e+1  1.40e+1 ││
-    ││      │ 3.00  4.00     5.00    │ 1.50e+1  1.60e+1  1.70e+1 ││
-    ││      │ 6.00  7.00     8.00    │ 1.80e+1  1.90e+1  2.00e+1 ││
-    ││      │ 9.00  1.00e+1  1.10e+1 │ 2.10e+1  2.20e+1  2.30e+1 ││
-    │└──────┴────────────────────────┴───────────────────────────┘│
-    └─────────────────────────────────────────────────────────────┘
-    |}];
+    {| [5]: r2x4x3 shape 0:2|2:3->1:4  <virtual> |}];
Tensor.print ~with_code:false ~with_grad:false `Default @@ b;
[%expect
-    {|
-    ┌──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
-    │[6]: r5x7x6 shape 0:5|2:6->1:7                                                                                                                                                                                            │
-    │┌──────┬─────────────────────────────────────────┬─────────────────────────────────────────┬─────────────────────────────────────────┬─────────────────────────────────────────┬─────────────────────────────────────────┐│
-    ││      │0 @ 0                                    │1 @ 0                                    │2 @ 0                                    │3 @ 0                                    │4 @ 0                                    ││
-    ││      │axis 2                                   │axis 2                                   │axis 2                                   │axis 2                                   │axis 2                                   ││
-    │├──────┼─────────────────────────────────────────┼─────────────────────────────────────────┼─────────────────────────────────────────┼─────────────────────────────────────────┼─────────────────────────────────────────┤│
-    ││axis 1│ 0.00     1.00     ...  4.00     5.00    │ 4.20e+1  4.30e+1  ...  4.60e+1  4.70e+1 │ 8.40e+1  8.50e+1  ...  8.80e+1  8.90e+1 │ 1.26e+2  1.27e+2  ...  1.30e+2  1.31e+2 │ 1.68e+2  1.69e+2  ...  1.72e+2  1.73e+2 ││
-    ││      │ 6.00     7.00     ...  1.00e+1  1.10e+1 │ 4.80e+1  4.90e+1  ...  5.20e+1  5.30e+1 │ 9.00e+1  9.10e+1  ...  9.40e+1  9.50e+1 │ 1.32e+2  1.33e+2  ...  1.36e+2  1.37e+2 │ 1.74e+2  1.75e+2  ...  1.78e+2  1.79e+2 ││
-    ││      │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     │ ...      ...      ...  ...      ...     ││
-    ││      │ 3.00e+1  3.10e+1  ...  3.40e+1  3.50e+1 │ 7.20e+1  7.30e+1  ...  7.60e+1  7.70e+1 │ 1.14e+2  1.15e+2  ...  1.18e+2  1.19e+2 │ 1.56e+2  1.57e+2  ...  1.60e+2  1.61e+2 │ 1.98e+2  1.99e+2  ...  2.02e+2  2.03e+2 ││
-    ││      │ 3.60e+1  3.70e+1  ...  4.00e+1  4.10e+1 │ 7.80e+1  7.90e+1  ...  8.20e+1  8.30e+1 │ 1.20e+2  1.21e+2  ...  1.24e+2  1.25e+2 │ 1.62e+2  1.63e+2  ...  1.66e+2  1.67e+2 │ 2.04e+2  2.05e+2  ...  2.08e+2  2.09e+2 ││
-    │└──────┴─────────────────────────────────────────┴─────────────────────────────────────────┴─────────────────────────────────────────┴─────────────────────────────────────────┴─────────────────────────────────────────┘│
-    └──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
-    |}];
+    {| [6]: r5x7x6 shape 0:5|2:6->1:7  <virtual> |}];
Tensor.print ~with_code:false ~with_grad:false `Default @@ c;
[%expect
{|
@@ -723,20 +553,7 @@ let%expect_test "einsum1 broadcast or sum out prefix axes" =
let ctx = Train.forward_and_ctx backend ctx ho in
Tensor.print ~with_code:false ~with_grad:false `Default @@ hey;
[%expect
-    {|
-    ┌─────────────────────────────────────────────────────────────┐
-    │[0]: r2x4x3 shape 0:2|2:3->1:4                               │
-    │┌──────┬────────────────────────┬───────────────────────────┐│
-    ││      │0 @ 0                   │1 @ 0                      ││
-    ││      │axis 2                  │axis 2                     ││
-    │├──────┼────────────────────────┼───────────────────────────┤│
-    ││axis 1│ 0.00  1.00     2.00    │ 1.20e+1  1.30e+1  1.40e+1 ││
-    ││      │ 3.00  4.00     5.00    │ 1.50e+1  1.60e+1  1.70e+1 ││
-    ││      │ 6.00  7.00     8.00    │ 1.80e+1  1.90e+1  2.00e+1 ││
-    ││      │ 9.00  1.00e+1  1.10e+1 │ 2.10e+1  2.20e+1  2.30e+1 ││
-    │└──────┴────────────────────────┴───────────────────────────┘│
-    └─────────────────────────────────────────────────────────────┘
-    |}];
+    {| [0]: r2x4x3 shape 0:2|2:3->1:4  <virtual> |}];
Tensor.print ~with_code:false ~with_grad:false `Default @@ ho;
[%expect
{|
@@ -776,106 +593,7 @@ let%expect_test "einsum1 broadcast or sum out prefix axes" =
let ctx = Train.forward_and_ctx backend ctx ho3 in
Tensor.print ~with_code:false ~with_grad:false `Default @@ hey2;
[%expect
-    {|
-    ┌────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
-    │[3]: r2x3x6x7x4x5 shape 0:2,1:3|4:4,5:5->2:6,3:7                                                                                                                                                │
-    │┌──────┬─────────────────────────────────────────────┬─────────────────────────────────────────────┬─────────────────────────────────────────────┬─────────────────────────────────────────────┐│
-    ││0 @ 1 │0 @ 4                                        │1 @ 4                                        │2 @ 4                                        │3 @ 4                                        ││
-    ││      │axis 5                                       │axis 5                                       │axis 5                                       │axis 5                                       ││
-    │├──────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┼─────────────────────────────────────────────┤│
...TRUNCATED BY DUNE...
-    ┌─────────────────────────┐
-    │[3]: r3x2 shape 1:2->0:3 │
-    │┌──────┬────────────┐    │
-    ││      │axis 1      │    │
-    │├──────┼────────────┤    │
-    ││axis 0│ 0.00  1.00 │    │
-    ││      │ 2.00  3.00 │    │
-    ││      │ 4.00  5.00 │    │
-    │└──────┴────────────┘    │
-    └─────────────────────────┘
-    |}];
+    {| [3]: r3x2 shape 1:2->0:3  <virtual> |}];
Tensor.print ~with_code:false ~with_grad:false `Default @@ e;
[%expect
-    {|
-    ┌───────────────────────────────────────┐
-    │[4]: r3x4 shape 1:4->0:3               │
-    │┌──────┬──────────────────────────────┐│
-    ││      │axis 1                        ││
-    │├──────┼──────────────────────────────┤│
-    ││axis 0│ 0.00  1.00  2.00     3.00    ││
-    ││      │ 4.00  5.00  6.00     7.00    ││
-    ││      │ 8.00  9.00  1.00e+1  1.10e+1 ││
-    │└──────┴──────────────────────────────┘│
-    └───────────────────────────────────────┘
-    |}];
+    {| [4]: r3x4 shape 1:4->0:3  <virtual> |}];
Tensor.print ~with_code:false ~with_grad:false `Default @@ f;
[%expect
{|
@@ -1253,20 +888,7 @@ let%expect_test "einsum1 fixed dim axis" =
let ctx = Train.forward_and_ctx backend ctx ho in
Tensor.print ~with_code:false ~with_grad:false `Default @@ hey;
[%expect
-    {|
-    ┌─────────────────────────────────────────────────────────────┐
-    │[0]: r2x4x3 shape 0:2|2:3->1:4                               │
-    │┌──────┬────────────────────────┬───────────────────────────┐│
-    ││      │0 @ 0                   │1 @ 0                      ││
-    ││      │axis 2                  │axis 2                     ││
-    │├──────┼────────────────────────┼───────────────────────────┤│
-    ││axis 1│ 0.00  1.00     2.00    │ 1.20e+1  1.30e+1  1.40e+1 ││
-    ││      │ 3.00  4.00     5.00    │ 1.50e+1  1.60e+1  1.70e+1 ││
-    ││      │ 6.00  7.00     8.00    │ 1.80e+1  1.90e+1  2.00e+1 ││
-    ││      │ 9.00  1.00e+1  1.10e+1 │ 2.10e+1  2.20e+1  2.30e+1 ││
-    │└──────┴────────────────────────┴───────────────────────────┘│
-    └─────────────────────────────────────────────────────────────┘
-    |}];
+    {| [0]: r2x4x3 shape 0:2|2:3->1:4  <virtual> |}];
Tensor.print ~with_code:false ~with_grad:false `Default @@ ho;
[%expect
{|
@@ -1284,20 +906,7 @@ let%expect_test "einsum1 fixed dim axis" =
let ctx = Train.forward_and_ctx backend ctx ho2 in
Tensor.print ~with_code:false ~with_grad:false `Default @@ hey;
[%expect
-    {|
-    ┌─────────────────────────────────────────────────────────────┐
-    │[0]: r2x4x3 shape 0:2|2:3->1:4                               │
-    │┌──────┬────────────────────────┬───────────────────────────┐│
-    ││      │0 @ 0                   │1 @ 0                      ││
-    ││      │axis 2                  │axis 2                     ││
-    │├──────┼────────────────────────┼───────────────────────────┤│
-    ││axis 1│ 0.00  1.00     2.00    │ 1.20e+1  1.30e+1  1.40e+1 ││
-    ││      │ 3.00  4.00     5.00    │ 1.50e+1  1.60e+1  1.70e+1 ││
-    ││      │ 6.00  7.00     8.00    │ 1.80e+1  1.90e+1  2.00e+1 ││
-    ││      │ 9.00  1.00e+1  1.10e+1 │ 2.10e+1  2.20e+1  2.30e+1 ││
-    │└──────┴────────────────────────┴───────────────────────────┘│
-    └─────────────────────────────────────────────────────────────┘
-    |}];
+    {| [0]: r2x4x3 shape 0:2|2:3->1:4  <virtual> |}];
Tensor.print ~with_code:false ~with_grad:false `Default @@ ho2;
[%expect
{|
@@ -1316,18 +925,7 @@ let%expect_test "einsum1 fixed dim axis" =
let ctx = Train.forward_and_ctx backend ctx ho3 in
Tensor.print ~with_code:false ~with_grad:false `Default @@ hey2;
[%expect
-    {|
-    ┌─────────────────────────┐
-    │[3]: r3x2 shape 1:2->0:3 │
-    │┌──────┬────────────┐    │
-    ││      │axis 1      │    │
-    │├──────┼────────────┤    │
-    ││axis 0│ 0.00  1.00 │    │
-    ││      │ 2.00  3.00 │    │
-    ││      │ 4.00  5.00 │    │
-    │└──────┴────────────┘    │
-    └─────────────────────────┘
-    |}];
+    {| [3]: r3x2 shape 1:2->0:3  <virtual> |}];
Tensor.print ~with_code:false ~with_grad:false `Default @@ ho3;
[%expect
{|
@@ -1379,34 +977,10 @@ let%expect_test "einsum with fixed dim axes" =
Train.forward_and_forget backend ctx c;
Tensor.print ~with_code:false ~with_grad:false `Default @@ a;
[%expect
-    {|
-    ┌───────────────────────────────────────────────────────────────────────────────────────────────────────────┐
-    │[0]: r3x2x4 shape 0:3|2:4->1:2                                                                             │
-    │┌──────┬────────────────────────┬────────────────────────────────────┬────────────────────────────────────┐│
-    ││      │0 @ 0                   │1 @ 0                               │2 @ 0                               ││
-    ││      │axis 2                  │axis 2                              │axis 2                              ││
-    │├──────┼────────────────────────┼────────────────────────────────────┼────────────────────────────────────┤│
-    ││axis 1│ 0.00  1.00  2.00  3.00 │ 8.00     9.00     1.00e+1  1.10e+1 │ 1.60e+1  1.70e+1  1.80e+1  1.90e+1 ││
-    ││      │ 4.00  5.00  6.00  7.00 │ 1.20e+1  1.30e+1  1.40e+1  1.50e+1 │ 2.00e+1  2.10e+1  2.20e+1  2.30e+1 ││
-    │└──────┴────────────────────────┴────────────────────────────────────┴────────────────────────────────────┘│
-    └───────────────────────────────────────────────────────────────────────────────────────────────────────────┘
-    |}];
+    {| [0]: r3x2x4 shape 0:3|2:4->1:2  <virtual> |}];
Tensor.print ~with_code:false ~with_grad:false `Default @@ b;
[%expect
-    {|
-    ┌────────────────────────────────┐
-    │[1]: r3x4x1 shape 0:3|2:1->1:4  │
-    │┌──────┬──────┬──────┬─────────┐│
-    ││      │0 @ 0 │1 @ 0 │2 @ 0    ││
-    ││      │axis 2│axis 2│axis 2   ││
-    │├──────┼──────┼──────┼─────────┤│
-    ││axis 1│ 0.00 │ 4.00 │ 8.00    ││
-    ││      │ 1.00 │ 5.00 │ 9.00    ││
-    ││      │ 2.00 │ 6.00 │ 1.00e+1 ││
-    ││      │ 3.00 │ 7.00 │ 1.10e+1 ││
-    │└──────┴──────┴──────┴─────────┘│
-    └────────────────────────────────┘
-    |}];
+    {| [1]: r3x4x1 shape 0:3|2:1->1:4  <virtual> |}];
Tensor.print ~with_code:false ~with_grad:false `Default @@ c;
[%expect
{|
@@ -1450,175 +1024,175 @@ let%expect_test "outer_sum simulating axis concatenation" =
Tensor.print ~with_code:false ~with_grad:false `Default @@ positions;
[%expect
{|
-    ┌────────────────────────────────┐
-    │[9]: ;=>+ shape 0:4,1:5,2:6,3:3 │
-    │┌──────┬──────────────────┐     │
-    ││0 @ 0 │axis 3            │     │
-    │├──────┼──────────────────┤     │
-    ││0 @ 1 │ 0.00  0.00  0.00 │     │
-    ││axis 2│ 0.00  0.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 0.00  0.00  4.00 │     │
-    ││      │ 0.00  0.00  5.00 │     │
-    │├──────┼──────────────────┤     │
-    ││1 @ 1 │ 0.00  1.00  0.00 │     │
-    ││axis 2│ 0.00  1.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 0.00  1.00  4.00 │     │
-    ││      │ 0.00  1.00  5.00 │     │
-    │├──────┼──────────────────┤     │
-    ││2 @ 1 │ 0.00  2.00  0.00 │     │
-    ││axis 2│ 0.00  2.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 0.00  2.00  4.00 │     │
-    ││      │ 0.00  2.00  5.00 │     │
-    │├──────┼──────────────────┤     │
-    ││3 @ 1 │ 0.00  3.00  0.00 │     │
-    ││axis 2│ 0.00  3.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 0.00  3.00  4.00 │     │
-    ││      │ 0.00  3.00  5.00 │     │
-    │├──────┼──────────────────┤     │
-    ││4 @ 1 │ 0.00  4.00  0.00 │     │
-    ││axis 2│ 0.00  4.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 0.00  4.00  4.00 │     │
-    ││      │ 0.00  4.00  5.00 │     │
-    │└──────┴──────────────────┘     │
-    ├────────────────────────────────┤
-    │┌──────┬──────────────────┐     │
-    ││1 @ 0 │axis 3            │     │
-    │├──────┼──────────────────┤     │
-    ││0 @ 1 │ 1.00  0.00  0.00 │     │
-    ││axis 2│ 1.00  0.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 1.00  0.00  4.00 │     │
-    ││      │ 1.00  0.00  5.00 │     │
-    │├──────┼──────────────────┤     │
-    ││1 @ 1 │ 1.00  1.00  0.00 │     │
-    ││axis 2│ 1.00  1.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 1.00  1.00  4.00 │     │
-    ││      │ 1.00  1.00  5.00 │     │
-    │├──────┼──────────────────┤     │
-    ││2 @ 1 │ 1.00  2.00  0.00 │     │
-    ││axis 2│ 1.00  2.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 1.00  2.00  4.00 │     │
-    ││      │ 1.00  2.00  5.00 │     │
-    │├──────┼──────────────────┤     │
-    ││3 @ 1 │ 1.00  3.00  0.00 │     │
-    ││axis 2│ 1.00  3.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 1.00  3.00  4.00 │     │
-    ││      │ 1.00  3.00  5.00 │     │
-    │├──────┼──────────────────┤     │
-    ││4 @ 1 │ 1.00  4.00  0.00 │     │
-    ││axis 2│ 1.00  4.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 1.00  4.00  4.00 │     │
-    ││      │ 1.00  4.00  5.00 │     │
-    │└──────┴──────────────────┘     │
-    ├────────────────────────────────┤
-    │┌──────┬──────────────────┐     │
-    ││2 @ 0 │axis 3            │     │
-    │├──────┼──────────────────┤     │
-    ││0 @ 1 │ 2.00  0.00  0.00 │     │
-    ││axis 2│ 2.00  0.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 2.00  0.00  4.00 │     │
-    ││      │ 2.00  0.00  5.00 │     │
-    │├──────┼──────────────────┤     │
-    ││1 @ 1 │ 2.00  1.00  0.00 │     │
-    ││axis 2│ 2.00  1.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 2.00  1.00  4.00 │     │
-    ││      │ 2.00  1.00  5.00 │     │
-    │├──────┼──────────────────┤     │
-    ││2 @ 1 │ 2.00  2.00  0.00 │     │
-    ││axis 2│ 2.00  2.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 2.00  2.00  4.00 │     │
-    ││      │ 2.00  2.00  5.00 │     │
-    │├──────┼──────────────────┤     │
-    ││3 @ 1 │ 2.00  3.00  0.00 │     │
-    ││axis 2│ 2.00  3.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 2.00  3.00  4.00 │     │
-    ││      │ 2.00  3.00  5.00 │     │
-    │├──────┼──────────────────┤     │
-    ││4 @ 1 │ 2.00  4.00  0.00 │     │
-    ││axis 2│ 2.00  4.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 2.00  4.00  4.00 │     │
-    ││      │ 2.00  4.00  5.00 │     │
-    │└──────┴──────────────────┘     │
-    ├────────────────────────────────┤
-    │┌──────┬──────────────────┐     │
-    ││3 @ 0 │axis 3            │     │
-    │├──────┼──────────────────┤     │
-    ││0 @ 1 │ 3.00  0.00  0.00 │     │
-    ││axis 2│ 3.00  0.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 3.00  0.00  4.00 │     │
-    ││      │ 3.00  0.00  5.00 │     │
-    │├──────┼──────────────────┤     │
-    ││1 @ 1 │ 3.00  1.00  0.00 │     │
-    ││axis 2│ 3.00  1.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 3.00  1.00  4.00 │     │
-    ││      │ 3.00  1.00  5.00 │     │
-    │├──────┼──────────────────┤     │
-    ││2 @ 1 │ 3.00  2.00  0.00 │     │
-    ││axis 2│ 3.00  2.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 3.00  2.00  4.00 │     │
-    ││      │ 3.00  2.00  5.00 │     │
-    │├──────┼──────────────────┤     │
-    ││3 @ 1 │ 3.00  3.00  0.00 │     │
-    ││axis 2│ 3.00  3.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 3.00  3.00  4.00 │     │
-    ││      │ 3.00  3.00  5.00 │     │
-    │├──────┼──────────────────┤     │
-    ││4 @ 1 │ 3.00  4.00  0.00 │     │
-    ││axis 2│ 3.00  4.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 3.00  4.00  4.00 │     │
-    ││      │ 3.00  4.00  5.00 │     │
-    │└──────┴──────────────────┘     │
-    └────────────────────────────────┘
+    ┌────────────────────────────────────────┐
+    │[9]: ;=>+ shape 0:4,1:5,2:6,3:3         │
+    │┌──────┬─────────────────────────────┐  │
+    ││0 @ 0 │axis 3                       │  │
+    │├──────┼─────────────────────────────┤  │
+    ││0 @ 1 │ 4.96e+2  6.67e-41  0.00     │  │
+    ││axis 2│ 2.48e+2  2.91e+3   1.00     │  │
+    ││      │ ...      ...       ...      │  │
+    ││      │ 4.92e+3  5.12e+3   4.00     │  │
+    ││      │ 2.48e+2  3.33e-41  5.00     │  │
+    │├──────┼─────────────────────────────┤  │
+    ││1 @ 1 │ 2.48e+2  1.00     3.33e-41  │  │
+    ││axis 2│ 0.00     2.91e+3  1.00      │  │
+    ││      │ ...      ...      ...       │  │
+    ││      │ 4.68e+3  5.12e+3  4.00      │  │
+    ││      │ 0.00     1.00     5.00      │  │
+    │├──────┼─────────────────────────────┤  │
+    ││2 @ 1 │ 2.48e+2  2.00     0.00      │  │
+    ││axis 2│ 7.63e-7  2.91e+3  1.00      │  │
+    ││      │ ...      ...      ...       │  │
+    ││      │ 4.68e+3  5.12e+3  4.00      │  │
+    ││      │ 7.63e-7  2.00     5.00      │  │
+    │├──────┼─────────────────────────────┤  │
+    ││3 @ 1 │ 2.48e+2    3.00     2.86e+3 │  │
+    ││axis 2│ -1.36e-38  2.91e+3  2.86e+3 │  │
+    ││      │ ...        ...      ...     │  │
+    ││      │ 4.68e+3    5.12e+3  2.86e+3 │  │
+    ││      │ -1.36e-38  3.00     2.86e+3 │  │
+    │├──────┼─────────────────────────────┤  │
+    ││4 @ 1 │ 3.06e+3  4.00     3.26e+3   │  │
+    ││axis 2│ 2.82e+3  2.91e+3  3.26e+3   │  │
+    ││      │ ...      ...      ...       │  │
+    ││      │ 7.50e+3  5.12e+3  3.26e+3   │  │
+    ││      │ 2.82e+3  4.00     3.26e+3   │  │
+    │└──────┴─────────────────────────────┘  │
+    ├────────────────────────────────────────┤
+    │┌──────┬─────────────────────────────┐  │
+    ││1 @ 0 │axis 3                       │  │
+    │├──────┼─────────────────────────────┤  │
+    ││0 @ 1 │ 4.97e+2  1.77e+28  1.89e+28 │  │
+    ││axis 2│ 2.49e+2  1.77e+28  1.89e+28 │  │
+    ││      │ ...      ...       ...      │  │
+    ││      │ 4.92e+3  1.77e+28  1.89e+28 │  │
+    ││      │ 2.49e+2  1.77e+28  1.89e+28 │  │
+    │├──────┼─────────────────────────────┤  │
+    ││1 @ 1 │ 2.49e+2  1.77e+28  1.89e+28 │  │
+    ││axis 2│ 1.00     1.77e+28  1.89e+28 │  │
+    ││      │ ...      ...       ...      │  │
+    ││      │ 4.68e+3  1.77e+28  1.89e+28 │  │
+    ││      │ 1.00     1.77e+28  1.89e+28 │  │
+    │├──────┼─────────────────────────────┤  │
+    ││2 @ 1 │ 2.49e+2  1.77e+28  1.89e+28 │  │
+    ││axis 2│ 1.00     1.77e+28  1.89e+28 │  │
+    ││      │ ...      ...       ...      │  │
+    ││      │ 4.68e+3  1.77e+28  1.89e+28 │  │
+    ││      │ 1.00     1.77e+28  1.89e+28 │  │
+    │├──────┼─────────────────────────────┤  │
+    ││3 @ 1 │ 2.49e+2  1.77e+28  1.89e+28 │  │
+    ││axis 2│ 1.00     1.77e+28  1.89e+28 │  │
+    ││      │ ...      ...       ...      │  │
+    ││      │ 4.68e+3  1.77e+28  1.89e+28 │  │
+    ││      │ 1.00     1.77e+28  1.89e+28 │  │
+    │├──────┼─────────────────────────────┤  │
+    ││4 @ 1 │ 3.06e+3  1.77e+28  1.89e+28 │  │
+    ││axis 2│ 2.82e+3  1.77e+28  1.89e+28 │  │
+    ││      │ ...      ...       ...      │  │
+    ││      │ 7.50e+3  1.77e+28  1.89e+28 │  │
+    ││      │ 2.82e+3  1.77e+28  1.89e+28 │  │
+    │└──────┴─────────────────────────────┘  │
+    ├────────────────────────────────────────┤
+    │┌──────┬────────────────────────────┐   │
+    ││2 @ 0 │axis 3                      │   │
+    │├──────┼────────────────────────────┤   │
+    ││0 @ 1 │ 4.98e+2  7.93e+34  2.48e+2 │   │
+    ││axis 2│ 2.50e+2  7.93e+34  2.49e+2 │   │
+    ││      │ ...      ...       ...     │   │
+    ││      │ 4.93e+3  7.93e+34  2.52e+2 │   │
+    ││      │ 2.50e+2  7.93e+34  2.53e+2 │   │
+    │├──────┼────────────────────────────┤   │
+    ││1 @ 1 │ 2.50e+2  7.93e+34  2.48e+2 │   │
+    ││axis 2│ 2.00     7.93e+34  2.49e+2 │   │
+    ││      │ ...      ...       ...     │   │
+    ││      │ 4.68e+3  7.93e+34  2.52e+2 │   │
+    ││      │ 2.00     7.93e+34  2.53e+2 │   │
+    │├──────┼────────────────────────────┤   │
+    ││2 @ 1 │ 2.50e+2  7.93e+34  2.48e+2 │   │
+    ││axis 2│ 2.00     7.93e+34  2.49e+2 │   │
+    ││      │ ...      ...       ...     │   │
+    ││      │ 4.68e+3  7.93e+34  2.52e+2 │   │
+    ││      │ 2.00     7.93e+34  2.53e+2 │   │
+    │├──────┼────────────────────────────┤   │
+    ││3 @ 1 │ 2.50e+2  7.93e+34  3.10e+3 │   │
+    ││axis 2│ 2.00     7.93e+34  3.10e+3 │   │
+    ││      │ ...      ...       ...     │   │
+    ││      │ 4.68e+3  7.93e+34  3.11e+3 │   │
+    ││      │ 2.00     7.93e+34  3.11e+3 │   │
+    │├──────┼────────────────────────────┤   │
+    ││4 @ 1 │ 3.07e+3  7.93e+34  3.50e+3 │   │
+    ││axis 2│ 2.82e+3  7.93e+34  3.50e+3 │   │
+    ││      │ ...      ...       ...     │   │
+    ││      │ 7.50e+3  7.93e+34  3.51e+3 │   │
+    ││      │ 2.82e+3  7.93e+34  3.51e+3 │   │
+    │└──────┴────────────────────────────┘   │
+    ├────────────────────────────────────────┤
+    │┌──────┬───────────────────────────────┐│
+    ││3 @ 0 │axis 3                         ││
+    │├──────┼───────────────────────────────┤│
+    ││0 @ 1 │ 4.99e+2  -7.00e-15  -1.19e-21 ││
+    ││axis 2│ 2.51e+2  2.91e+3    1.00      ││
+    ││      │ ...      ...        ...       ││
+    ││      │ 4.93e+3  5.12e+3    4.00      ││
+    ││      │ 2.51e+2  -7.00e-15  5.00      ││
+    │├──────┼───────────────────────────────┤│
+    ││1 @ 1 │ 2.51e+2  1.00     -1.19e-21   ││
+    ││axis 2│ 3.00     2.91e+3  1.00        ││
+    ││      │ ...      ...      ...         ││
+    ││      │ 4.68e+3  5.12e+3  4.00        ││
+    ││      │ 3.00     1.00     5.00        ││
+    │├──────┼───────────────────────────────┤│
+    ││2 @ 1 │ 2.51e+2  2.00     -1.19e-21   ││
+    ││axis 2│ 3.00     2.91e+3  1.00        ││
+    ││      │ ...      ...      ...         ││
+    ││      │ 4.68e+3  5.12e+3  4.00        ││
+    ││      │ 3.00     2.00     5.00        ││
+    │├──────┼───────────────────────────────┤│
+    ││3 @ 1 │ 2.51e+2  3.00     2.86e+3     ││
+    ││axis 2│ 3.00     2.91e+3  2.86e+3     ││
+    ││      │ ...      ...      ...         ││
+    ││      │ 4.68e+3  5.12e+3  2.86e+3     ││
+    ││      │ 3.00     3.00     2.86e+3     ││
+    │├──────┼───────────────────────────────┤│
+    ││4 @ 1 │ 3.07e+3  4.00     3.26e+3     ││
+    ││axis 2│ 2.82e+3  2.91e+3  3.26e+3     ││
+    ││      │ ...      ...      ...         ││
+    ││      │ 7.50e+3  5.12e+3  3.26e+3     ││
+    ││      │ 2.82e+3  4.00     3.26e+3     ││
+    │└──────┴───────────────────────────────┘│
+    └────────────────────────────────────────┘
|}];
Tensor.print ~with_code:false ~with_grad:false `Default @@ ti;
[%expect
{|
-    ┌───────────────────────────┐
-    │[1]: =>_ti shape 0:4,1:3   │
-    │┌──────┬──────────────────┐│
-    ││      │axis 1            ││
-    │├──────┼──────────────────┤│
-    ││axis 0│ 0.00  0.00  0.00 ││
-    ││      │ 1.00  0.00  0.00 ││
-    ││      │ 2.00  0.00  0.00 ││
-    ││      │ 3.00  0.00  0.00 ││
-    │└──────┴──────────────────┘│
-    └───────────────────────────┘
+    ┌─────────────────────────────────────┐
+    │[1]: =>_ti shape 0:4,1:3             │
+    │┌──────┬────────────────────────────┐│
+    ││      │axis 1                      ││
+    │├──────┼────────────────────────────┤│
+    ││axis 0│ 0.00  3.33e-41   0.00      ││
+    ││      │ 1.00  1.77e+28   1.89e+28  ││
+    ││      │ 2.00  7.93e+34   2.48e+2   ││
+    ││      │ 3.00  -7.00e-15  -1.19e-21 ││
+    │└──────┴────────────────────────────┘│
+    └─────────────────────────────────────┘
|}];
Tensor.print ~with_code:false ~with_grad:false `Default @@ tk;
[%expect
{|
-    ┌───────────────────────────┐
-    │[7]: =>_tk shape 0:6,1:3   │
-    │┌──────┬──────────────────┐│
-    ││      │axis 1            ││
-    │├──────┼──────────────────┤│
-    ││axis 0│ 0.00  0.00  0.00 ││
-    ││      │ 0.00  0.00  1.00 ││
-    ││      │ ...   ...   ...  ││
-    ││      │ 0.00  0.00  4.00 ││
-    ││      │ 0.00  0.00  5.00 ││
-    │└──────┴──────────────────┘│
-    └───────────────────────────┘
+    ┌──────────────────────────────────┐
+    │[7]: =>_tk shape 0:6,1:3          │
+    │┌──────┬─────────────────────────┐│
+    ││      │axis 1                   ││
+    │├──────┼─────────────────────────┤│
+    ││axis 0│ 2.48e+2  3.33e-41  0.00 ││
+    ││      │ 0.00     2.91e+3   1.00 ││
+    ││      │ ...      ...       ...  ││
+    ││      │ 4.68e+3  5.12e+3   4.00 ││
+    ││      │ 0.00     0.00      5.00 ││
+    │└──────┴─────────────────────────┘│
+    └──────────────────────────────────┘
|}]


let%expect_test "einsum with a leftmost input axis preserved as output axis" =
@@ -1644,54 +1218,10 @@ let%expect_test "einsum with a leftmost input axis preserved as output axis" =
Train.forward_and_forget backend ctx c;
Tensor.print ~with_code:false ~with_grad:false `Default @@ a;
[%expect
-    {|
-    ┌───────────────────────────────────────────────────────────────────────────────────────────────────────────┐
-    │[0]: r3x2x4_a shape 0:3|2:4->1:2                                                                           │
-    │┌──────┬────────────────────────┬────────────────────────────────────┬────────────────────────────────────┐│
-    ││      │0 @ 0                   │1 @ 0                               │2 @ 0                               ││
-    ││      │axis 2                  │axis 2                              │axis 2                              ││
-    │├──────┼────────────────────────┼────────────────────────────────────┼────────────────────────────────────┤│
-    ││axis 1│ 0.00  1.00  2.00  3.00 │ 8.00     9.00     1.00e+1  1.10e+1 │ 1.60e+1  1.70e+1  1.80e+1  1.90e+1 ││
-    ││      │ 4.00  5.00  6.00  7.00 │ 1.20e+1  1.30e+1  1.40e+1  1.50e+1 │ 2.00e+1  2.10e+1  2.20e+1  2.30e+1 ││
-    │└──────┴────────────────────────┴────────────────────────────────────┴────────────────────────────────────┘│
-    └───────────────────────────────────────────────────────────────────────────────────────────────────────────┘
-    |}];
+    {| [0]: r3x2x4_a shape 0:3|2:4->1:2  <virtual> |}];
Tensor.print ~with_code:false ~with_grad:false `Default @@ b;
[%expect
-    {|
-    ┌────────────────────────────────────────────────────────────────┐
-    │[1]: r3x4x2x3_b shape 0:3|2:2,3:3->1:4                          │
-    │┌──────┬───────────────────────────┬───────────────────────────┐│
-    ││0 @ 0 │0 @ 2                      │1 @ 2                      ││
-    ││      │axis 3                     │axis 3                     ││
-    │├──────┼───────────────────────────┼───────────────────────────┤│
-    ││axis 1│ 0.00     1.00     2.00    │ 3.00     4.00     5.00    ││
-    ││      │ 6.00     7.00     8.00    │ 9.00     1.00e+1  1.10e+1 ││
-    ││      │ 1.20e+1  1.30e+1  1.40e+1 │ 1.50e+1  1.60e+1  1.70e+1 ││
-    ││      │ 1.80e+1  1.90e+1  2.00e+1 │ 2.10e+1  2.20e+1  2.30e+1 ││
-    │└──────┴───────────────────────────┴───────────────────────────┘│
-    ├────────────────────────────────────────────────────────────────┤
-    │┌──────┬───────────────────────────┬───────────────────────────┐│
-    ││1 @ 0 │0 @ 2                      │1 @ 2                      ││
-    ││      │axis 3                     │axis 3                     ││
-    │├──────┼───────────────────────────┼───────────────────────────┤│
-    ││axis 1│ 2.40e+1  2.50e+1  2.60e+1 │ 2.70e+1  2.80e+1  2.90e+1 ││
-    ││      │ 3.00e+1  3.10e+1  3.20e+1 │ 3.30e+1  3.40e+1  3.50e+1 ││
-    ││      │ 3.60e+1  3.70e+1  3.80e+1 │ 3.90e+1  4.00e+1  4.10e+1 ││
-    ││      │ 4.20e+1  4.30e+1  4.40e+1 │ 4.50e+1  4.60e+1  4.70e+1 ││
-    │└──────┴───────────────────────────┴───────────────────────────┘│
-    ├────────────────────────────────────────────────────────────────┤
-    │┌──────┬───────────────────────────┬───────────────────────────┐│
-    ││2 @ 0 │0 @ 2                      │1 @ 2                      ││
-    ││      │axis 3                     │axis 3                     ││
-    │├──────┼───────────────────────────┼───────────────────────────┤│
-    ││axis 1│ 4.80e+1  4.90e+1  5.00e+1 │ 5.10e+1  5.20e+1  5.30e+1 ││
-    ││      │ 5.40e+1  5.50e+1  5.60e+1 │ 5.70e+1  5.80e+1  5.90e+1 ││
-    ││      │ 6.00e+1  6.10e+1  6.20e+1 │ 6.30e+1  6.40e+1  6.50e+1 ││
-    ││      │ 6.60e+1  6.70e+1  6.80e+1 │ 6.90e+1  7.00e+1  7.10e+1 ││
-    │└──────┴───────────────────────────┴───────────────────────────┘│
-    └────────────────────────────────────────────────────────────────┘
-    |}];
+    {| [1]: r3x4x2x3_b shape 0:3|2:2,3:3->1:4  <virtual> |}];
Tensor.print ~with_code:false ~with_grad:false `Default @@ c;
[%expect
{|
@@ -1728,34 +1258,10 @@ let%expect_test "einsum permuting two leftmost input axes as output axes" =
Train.forward_and_forget backend ctx c;
Tensor.print ~with_code:false ~with_grad:false `Default @@ a;
[%expect
-    {|
-    ┌───────────────────────────┐
-    │[0]: r2x2_a shape 1:2->0:2 │
-    │┌──────┬────────────┐      │
-    ││      │axis 1      │      │
-    │├──────┼────────────┤      │
-    ││axis 0│ 0.00  1.00 │      │
-    ││      │ 2.00  3.00 │      │
-    │└──────┴────────────┘      │
-    └───────────────────────────┘
-    |}];
+    {| [0]: r2x2_a shape 1:2->0:2  <virtual> |}];
Tensor.print ~with_code:false ~with_grad:false `Default @@ b;
[%expect
-    {|
-    ┌───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
-    │[1]: r2x2x3x4_b shape 1:2,2:3,3:4->0:2                                                                                 │
-    │┌──────┬────────────────────────────────────┬────────────────────────────────────┬────────────────────────────────────┐│
-    ││      │0 @ 2                               │1 @ 2                               │2 @ 2                               ││
-    ││      │axis 3                              │axis 3                              │axis 3                              ││
-    │├──────┼────────────────────────────────────┼────────────────────────────────────┼────────────────────────────────────┤│
-    ││0 @ 1 │ 0.00     1.00     2.00     3.00    │ 4.00     5.00     6.00     7.00    │ 8.00     9.00     1.00e+1  1.10e+1 ││
-    ││axis 0│ 2.40e+1  2.50e+1  2.60e+1  2.70e+1 │ 2.80e+1  2.90e+1  3.00e+1  3.10e+1 │ 3.20e+1  3.30e+1  3.40e+1  3.50e+1 ││
-    │├──────┼────────────────────────────────────┼────────────────────────────────────┼────────────────────────────────────┤│
-    ││1 @ 1 │ 1.20e+1  1.30e+1  1.40e+1  1.50e+1 │ 1.60e+1  1.70e+1  1.80e+1  1.90e+1 │ 2.00e+1  2.10e+1  2.20e+1  2.30e+1 ││
-    ││axis 0│ 3.60e+1  3.70e+1  3.80e+1  3.90e+1 │ 4.00e+1  4.10e+1  4.20e+1  4.30e+1 │ 4.40e+1  4.50e+1  4.60e+1  4.70e+1 ││
-    │└──────┴────────────────────────────────────┴────────────────────────────────────┴────────────────────────────────────┘│
-    └───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
-    |}];
+    {| [1]: r2x2x3x4_b shape 1:2,2:3,3:4->0:2  <virtual> |}];
Tensor.print ~with_code:false ~with_grad:false `Default @@ c;
[%expect
{|
"/usr/bin/env" "bash" "-c" "opam exec -- dune build @install @check @runtest && rm -rf _build" failed with exit status 1
2025-06-29 09:22.23: Job failed: Failed: Build failed