Organisationsahrefsocannl0abd20 ()debian-12-5.3_opam-2.4

debian-12-5.3_opam-2.4

Logs

Show full logs
2025-08-09 21:07.55: New job: test ahrefs/ocannl https://github.com/ahrefs/ocannl.git#refs/heads/master (0abd20bce94cc89208655a47b9fe3b84a3bc4f82) (linux-x86_64:debian-12-5.3_opam-2.4)
Base: ocaml/opam:debian-12-ocaml-5.3@sha256:6c3206584a61f2e7d9bdcd4f930a97703856d06e2a2b9a11f433c0021b4a169d
Opam project build

To reproduce locally:

git clone --recursive "https://github.com/ahrefs/ocannl.git" -b "master" && cd "ocannl" && git reset --hard 0abd20bc
cat > Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:debian-12-ocaml-5.3@sha256:6c3206584a61f2e7d9bdcd4f930a97703856d06e2a2b9a11f433c0021b4a169d
# debian-12-5.3_opam-2.4
USER 1000:1000
ENV CLICOLOR_FORCE="1"
ENV OPAMCOLOR="always"
WORKDIR /src
RUN sudo ln -f /usr/bin/opam-2.4 /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 e77940d8ff8706305602d0d643bf01c77beef2e7 || git fetch origin master) && git reset -q --hard e77940d8ff8706305602d0d643bf01c77beef2e7 && 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 dune-private-libs.3.19.1 dune-site.3.19.1 dyn.3.19.1 fieldslib.v0.17.0 fmt.0.11.0 integers.0.7.0 jane-street-headers.v0.17.0 jst-config.v0.17.0 logs.0.9.0 mdx.2.5.0 mtime.2.1.0 multicore-magic.2.3.1 num.1.6 ocaml.5.3.0 ocaml-base-compiler.5.3.0 ocaml-compiler.5.3.0 ocaml-compiler-libs.v0.17.0 ocaml-config.3 ocaml-options-vanilla.1 ocaml-syntax-shims.1.0.0 ocaml-version.4.0.1 ocaml_intrinsics_kernel.v0.17.1 ocamlbuild.0.16.1 ocamlfind.1.9.8 ordering.3.19.1 parsexp.v0.17.0 pp.2.0.0 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.6.1.1 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.1.13.2 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 stdune.3.19.1 thread-local-storage.0.2 time_now.v0.17.0 topkg.1.1.0 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=2.4 --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

2025-08-09 21:07.55: Using cache hint "ahrefs/ocannl-ocaml/opam:debian-12-ocaml-5.3@sha256:6c3206584a61f2e7d9bdcd4f930a97703856d06e2a2b9a11f433c0021b4a169d-debian-12-5.3_opam-2.4-83f2c92a8149933d384aef7c4711fb31"
2025-08-09 21:07.55: Using OBuilder spec:
((from ocaml/opam:debian-12-ocaml-5.3@sha256:6c3206584a61f2e7d9bdcd4f930a97703856d06e2a2b9a11f433c0021b4a169d)
 (comment debian-12-5.3_opam-2.4)
 (user (uid 1000) (gid 1000))
 (env CLICOLOR_FORCE 1)
 (env OPAMCOLOR always)
 (workdir /src)
 (run (shell "sudo ln -f /usr/bin/opam-2.4 /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 e77940d8ff8706305602d0d643bf01c77beef2e7 || git fetch origin master) && git reset -q --hard e77940d8ff8706305602d0d643bf01c77beef2e7 && 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 dune-private-libs.3.19.1 dune-site.3.19.1 dyn.3.19.1 fieldslib.v0.17.0 fmt.0.11.0 integers.0.7.0 jane-street-headers.v0.17.0 jst-config.v0.17.0 logs.0.9.0 mdx.2.5.0 mtime.2.1.0 multicore-magic.2.3.1 num.1.6 ocaml.5.3.0 ocaml-base-compiler.5.3.0 ocaml-compiler.5.3.0 ocaml-compiler-libs.v0.17.0 ocaml-config.3 ocaml-options-vanilla.1 ocaml-syntax-shims.1.0.0 ocaml-version.4.0.1 ocaml_intrinsics_kernel.v0.17.1 ocamlbuild.0.16.1 ocamlfind.1.9.8 ordering.3.19.1 parsexp.v0.17.0 pp.2.0.0 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.6.1.1 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.1.13.2 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 stdune.3.19.1 thread-local-storage.0.2 time_now.v0.17.0 topkg.1.1.0 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=2.4 --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"))
)

2025-08-09 21:07.55: Waiting for resource in pool OCluster
2025-08-09 21:07.55: Waiting for worker…
2025-08-09 21:07.55: Got resource from pool OCluster
Building on phoebe
HEAD is now at 0a45e7bc Fourth pass on bidirectional precision inference: don't force precisions from below from defaults when inferring
HEAD is now at 0abd20bc New test moons_demo_mini; updates test expectations; unfortunately, bigram is nondeterministic; and moons_demo is broken on multicore_cc but probably an unlucky random seed because moons_demo_parallel works well

(from ocaml/opam:debian-12-ocaml-5.3@sha256:6c3206584a61f2e7d9bdcd4f930a97703856d06e2a2b9a11f433c0021b4a169d)
Unable to find image 'ocaml/opam:debian-12-ocaml-5.3@sha256:6c3206584a61f2e7d9bdcd4f930a97703856d06e2a2b9a11f433c0021b4a169d' locally
docker.io/ocaml/opam@sha256:6c3206584a61f2e7d9bdcd4f930a97703856d06e2a2b9a11f433c0021b4a169d: Pulling from ocaml/opam
b6da893a799e: Already exists
Digest: sha256:6c3206584a61f2e7d9bdcd4f930a97703856d06e2a2b9a11f433c0021b4a169d
Status: Downloaded newer image for ocaml/opam@sha256:6c3206584a61f2e7d9bdcd4f930a97703856d06e2a2b9a11f433c0021b4a169d
2025-08-09 21:07.56 ---> using "8eaf3f2decb526ca35ad09f39f5f0c6ba5d9f4967b3f669a74b96aa9bc58a9eb" from cache

/: (comment debian-12-5.3_opam-2.4)

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

/: (env CLICOLOR_FORCE 1)

/: (env OPAMCOLOR always)

/: (workdir /src)

/src: (run (shell "sudo ln -f /usr/bin/opam-2.4 /usr/bin/opam"))
2025-08-09 21:07.56 ---> using "9bfb5ad4db617b7c882826218e397cb82a80f1ec507c9ebd6af72d0eac172351" 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 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
2025-08-09 21:07.56 ---> using "73df1b0e85c59612791ca1b06818024498a4e21db22828164bcac4b86a132d2a" from cache

/src: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))
Linux 6.8.0-63-generic
The OCaml toplevel, version 5.3.0
2.4.1
2025-08-09 21:07.56 ---> using "bef70556134d0e5209ca1f42df4e75fea5611e6c7646e7e2d9326cf708050a96" from cache

/src: (workdir /src)

/src: (run (shell "sudo chown opam /src"))
2025-08-09 21:07.56 ---> using "e8b8362c5a4607ac8e4cae4eccf1d4704f31fa570f8fb802aafff16220f66edd" from cache

/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
           (network host)
           (shell "cd ~/opam-repository && (git cat-file -e e77940d8ff8706305602d0d643bf01c77beef2e7 || git fetch origin master) && git reset -q --hard e77940d8ff8706305602d0d643bf01c77beef2e7 && git log --no-decorate -n1 --oneline && opam update -u"))
e77940d8ff Merge pull request #28255 from dbuenzli/b0-publish-fmt.0.11.0

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

Already up-to-date.
Nothing to do.
# To update the current shell environment, run: eval $(opam env)
2025-08-09 21:07.56 ---> using "7b5e471a9ce5351d615a5fa05832ea7c8a2adceaa1d621a289da90c524e9796d" from cache

/src: (copy (src neural_nets_lib.opam arrayjit.opam) (dst ./))
2025-08-09 21:07.56 ---> using "a1fe2d0438f677b8bc510dd8fd9083eea5b77fe36a94cb6bdb2942a4ec3ad21f" 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)
2025-08-09 21:07.56 ---> using "7a4e10069c382a968c2262fdfa4be5617ab472275f69329984523ffa68bf6385" from cache

/src: (run (network host)
           (shell "echo '(lang dune 3.0)' > './dune-project'"))
2025-08-09 21:07.56 ---> using "de8ce623745ec564ccf215bcbba29eb6c655cf00769a51663530e27efea1fd42" 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 dune-private-libs.3.19.1 dune-site.3.19.1 dyn.3.19.1 fieldslib.v0.17.0 fmt.0.11.0 integers.0.7.0 jane-street-headers.v0.17.0 jst-config.v0.17.0 logs.0.9.0 mdx.2.5.0 mtime.2.1.0 multicore-magic.2.3.1 num.1.6 ocaml.5.3.0 ocaml-base-compiler.5.3.0 ocaml-compiler.5.3.0 ocaml-compiler-libs.v0.17.0 ocaml-config.3 ocaml-options-vanilla.1 ocaml-syntax-shims.1.0.0 ocaml-version.4.0.1 ocaml_intrinsics_kernel.v0.17.1 ocamlbuild.0.16.1 ocamlfind.1.9.8 ordering.3.19.1 parsexp.v0.17.0 pp.2.0.0 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.6.1.1 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.1.13.2 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 stdune.3.19.1 thread-local-storage.0.2 time_now.v0.17.0 topkg.1.1.0 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=2.4 --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 [20.7 kB]
- Ign:4 http://deb.debian.org/debian bookworm-updates/main amd64 Packages.diff/Index
- Get:5 http://deb.debian.org/debian bookworm-updates/main amd64 Packages [6924 B]
- Get:6 http://deb.debian.org/debian-security bookworm-security/main amd64 Packages [272 kB]
- Fetched 403 kB in 1s (787 kB/s)
- Reading package lists...
- 

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

[NOTE] Package ocaml-options-vanilla is already installed (current version is 1).
[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-base-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 ... 18778 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) ...
2025-08-09 21:07.56 ---> using "af25b3e86b09cbd725527367f014d5fd3eef992e417c5fb33da270f4b8718964" from cache

/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
           (network host)
           (shell "opam install $DEPS"))
[NOTE] Package ocaml-options-vanilla is already installed (current version is 1).
[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-base-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 87 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 dune-private-libs       3.19.1
  - install dune-site               3.19.1
  - install dyn                     3.19.1
  - install fieldslib               v0.17.0
  - install fmt                     0.11.0
  - install integers                0.7.0
  - install jane-street-headers     v0.17.0
  - install jst-config              v0.17.0
  - install logs                    0.9.0
  - 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 ordering                3.19.1
  - install parsexp                 v0.17.0
  - install pp                      2.0.0
  - 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            6.1.1
  - 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                      1.13.2
  - 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 stdune                  3.19.1
  - install thread-local-storage    0.2
  - install time_now                v0.17.0
  - install topkg                   1.1.0
  - install tyxml                   4.6.0
  - install uucp                    16.0.0
  - install uutf                    1.0.4
  - install variantslib             v0.17.0

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved angstrom.0.16.1  (cached)
-> retrieved astring.0.8.5  (cached)
-> retrieved backoff.0.1.1  (cached)
-> retrieved bigarray-compat.1.1.0  (cached)
-> retrieved bigstringaf.0.10.0  (cached)
-> retrieved base.v0.17.3  (cached)
-> retrieved camlp-streams.5.0.1  (cached)
-> retrieved camlzip.1.13  (cached)
-> installed conf-libcurl.2
-> retrieved cppo.1.8.0  (cached)
-> retrieved cmdliner.1.3.0  (cached)
-> 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 fmt.0.11.0  (cached)
-> retrieved integers.0.7.0  (cached)
-> retrieved jane-street-headers.v0.17.0  (cached)
-> retrieved jst-config.v0.17.0  (cached)
-> retrieved logs.0.9.0  (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 ocamlfind.1.9.8  (cached)
-> retrieved ocamlbuild.0.16.1  (cached)
-> retrieved parsexp.v0.17.0  (cached)
-> retrieved pp.2.0.0  (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.6.1.1  (cached)
-> retrieved ppx_enumerate.v0.17.0  (cached)
-> retrieved dune.3.19.1, dune-configurator.3.19.1, dune-private-libs.3.19.1, dune-site.3.19.1, dyn.3.19.1, ordering.3.19.1, stdune.3.19.1  (cached)
-> retrieved ppx_expect.v0.17.3  (cached)
-> retrieved ppx_fields_conv.v0.17.0  (cached)
-> retrieved ppx_globalize.v0.17.2  (cached)
-> retrieved ppx_hash.v0.17.0  (cached)
-> retrieved ppx_here.v0.17.0  (cached)
-> retrieved ppx_inline_test.v0.17.1  (cached)
-> retrieved ppx_optcomp.v0.17.1  (cached)
-> installed cmdliner.1.3.0
-> installed num.1.6
-> installed ocamlbuild.0.16.1
-> retrieved ppx_minidebug.2.3.0  (cached)
-> retrieved ppx_sexp_conv.v0.17.1  (cached)
-> retrieved ppx_string.v0.17.0  (cached)
-> retrieved ppx_variants_conv.v0.17.1  (cached)
-> retrieved ppxlib_jane.v0.17.4  (cached)
-> retrieved ptime.1.2.0  (cached)
-> retrieved re.1.13.2  (cached)
-> retrieved result.1.5  (cached)
-> retrieved saturn_lockfree.0.5.0  (cached)
-> retrieved seq.base  (cached)
-> installed seq.base
-> retrieved ppxlib.0.36.0  (cached)
-> retrieved sexplib.v0.17.0  (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 printbox.0.12, printbox-ext-plot.0.12, printbox-html.0.12, printbox-md.0.12, printbox-text.0.12  (cached)
-> retrieved topkg.1.1.0  (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 camlzip.1.13
-> installed topkg.1.1.0
-> installed uutf.1.0.4
-> installed mtime.2.1.0
-> installed ptime.1.2.0
-> installed fmt.0.11.0
-> installed astring.0.8.5
-> installed logs.0.9.0
-> installed dune.3.19.1
-> installed backoff.0.1.1
-> installed bigarray-compat.1.1.0
-> installed camlp-streams.5.0.1
-> installed csexp.1.5.2
-> installed cppo.1.8.0
-> installed csv.2.4
-> installed jane-street-headers.v0.17.0
-> installed multicore-magic.2.3.1
-> installed ocaml-compiler-libs.v0.17.0
-> installed ocaml-syntax-shims.1.0.0
-> installed ocaml-version.4.0.1
-> installed ocaml_intrinsics_kernel.v0.17.1
-> installed pp.2.0.0
-> installed pprint.20230830
-> installed ppx_derivers.1.2.1
-> installed printbox.0.12
-> installed re.1.13.2
-> installed result.1.5
-> installed sexplib0.v0.17.0
-> installed stdlib-shims.0.3.0
-> installed thread-local-storage.0.2
-> installed saturn_lockfree.0.5.0
-> installed integers.0.7.0
-> installed ordering.3.19.1
-> installed parsexp.v0.17.0
-> installed dune-configurator.3.19.1
-> installed mdx.2.5.0
-> installed bigstringaf.0.10.0
-> installed dyn.3.19.1
-> installed tyxml.4.6.0
-> installed sexplib.v0.17.0
-> installed angstrom.0.16.1
-> installed printbox-html.0.12
-> installed curl.0.10.0
-> installed stdune.3.19.1
-> installed ctypes.0.23.0
-> installed base.v0.17.3
-> installed fieldslib.v0.17.0
-> installed variantslib.v0.17.0
-> installed stdio.v0.17.0
-> installed dune-private-libs.3.19.1
-> installed ctypes-foreign.0.23.0
-> installed dune-site.3.19.1
-> installed uucp.16.0.0
-> installed printbox-text.0.12
-> installed printbox-md.0.12
-> installed printbox-ext-plot.0.12
-> installed ppxlib.0.36.0
-> installed ppx_optcomp.v0.17.1
-> installed ppxlib_jane.v0.17.4
-> installed ppx_cold.v0.17.0
-> installed ppx_here.v0.17.0
-> installed ppx_variants_conv.v0.17.1
-> installed ppx_fields_conv.v0.17.0
-> installed ppx_deriving.6.1.1
-> installed ppx_enumerate.v0.17.0
-> installed ppx_globalize.v0.17.2
-> installed ppx_compare.v0.17.0
-> 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)
2025-08-09 21:07.56 ---> using "240727c436574e0307c02011788bd3a70e79136a76f612d7258b8ba7fa2dafad" from cache

/src: (copy (src .) (dst /src))
2025-08-09 21:07.57 ---> saved as "efde619821dac11fe68551472862738d133da555a5e5eadcc8e26813b0e8940a"

/src: (run (shell "opam exec -- dune build @install @check @runtest && rm -rf _build"))
File "arrayjit/test/dune", line 6, characters 16-24:
6 |   (pps ppx_here 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/operations/config && ../../../arrayjit/bin/read_config.exe --read=backend)
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/operations/dune", lines 76-91, characters 0-458:
76 | (rule
77 |  (alias runtest)
78 |  (target
....
89 |     "--ocannl_output_prec_in_ll_files=true"
90 |     "--ocannl_output_debug_files_in_build_directory=true"
91 |     "--ocannl_clean_up_artifacts_on_startup=false"))))
(cd _build/default/test/operations && ./threefry4x32_demo.exe --ocannl_output_prec_in_ll_files=true --ocannl_output_debug_files_in_build_directory=true --ocannl_clean_up_artifacts_on_startup=true)
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
Fatal error: exception Sys_error("build_files/n3_fwd_run_id_1.log: No such file or directory")
Raised by primitive operation at Stdlib.open_in_gen in file "stdlib.ml", line 405, characters 28-54
Called from Stdio__In_channel.with_file in file "src/in_channel.ml", line 18, characters 45-66
Called from Stdio__In_channel.read_all in file "src/in_channel.ml" (inlined), line 86, characters 21-49
Called from Backends__Cc_backend.c_compile_and_load in file "arrayjit/lib/cc_backend.ml", line 137, characters 8-43
Re-raised at Backends__Cc_backend.c_compile_and_load in file "arrayjit/lib/cc_backend.ml", lines 134-140, characters 18-23
Re-raised at Backends__Cc_backend.c_compile_and_load in file "arrayjit/lib/cc_backend.ml", lines 106-165, characters 35-8
Called from Backends__Cc_backend.compile in file "arrayjit/lib/cc_backend.ml", line 204, characters 23-67
Called from Backends.Add_device.compile in file "arrayjit/lib/backends.ml", line 325, characters 15-45
Called from Backends.Raise_backend.compile in file "arrayjit/lib/backends.ml", line 442, characters 29-59
Re-raised at Backends.Raise_backend.compile in file "arrayjit/lib/backends.ml", line 442, characters 4-59
Re-raised at Backends.Raise_backend.compile in file "arrayjit/lib/backends.ml", lines 438-446, characters 26-99
Called from Ocannl__Train.run_once in file "lib/train.ml", line 514, characters 37-77
Re-raised at Ocannl__Train.run_once in file "lib/train.ml", lines 493-516, characters 25-17
Called from Ocannl__Train.forward_once in file "lib/train.ml", line 526, characters 12-96
Called from Dune__exe__Threefry4x32_demo in file "test/operations/threefry4x32_demo.ml", line 30, characters 9-68
(cd _build/default/test/operations && ./test_threefry_precision.exe)
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
Threefry4x32 result precision: uint4x32
Uniform result precision: single
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_output_prec_in_ll_files
Not found, using default false
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_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_cc_backend_verify_codesign
Not found, using default false
Compilation successful!
Actual tensor precision in context: uint4x32
(cd _build/default/test/ppx && ./test_ppx_op.exe)
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
(cd _build/default/test/ppx && ./test_ppx_op_expected.exe)
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
(cd _build/.sandbox/9e6bbd78b2246ae96d92a1b9b09a671b/default/test/operations && .operations_tutorials.inline-tests/inline-test-runner.exe inline-test-runner operations_tutorials -partition 'Retrieving commandline, environment, or config file variable ocannl_log_level' -source-tree-root ../.. -diff-cmd -)
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
(cd _build/.sandbox/9e6bbd78b2246ae96d92a1b9b09a671b/default/test/operations && .operations_tutorials.inline-tests/inline-test-runner.exe inline-test-runner operations_tutorials -partition 'Found 0, in the config file' -source-tree-root ../.. -diff-cmd -)
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
(cd _build/.sandbox/a823770e23b7d2212d5dd007caeb150d/default/test/einsum && .einsum_tutorials.inline-tests/inline-test-runner.exe inline-test-runner einsum_tutorials -partition 'Found 0, in the config file' -source-tree-root ../.. -diff-cmd -)
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
(cd _build/.sandbox/a823770e23b7d2212d5dd007caeb150d/default/test/einsum && .einsum_tutorials.inline-tests/inline-test-runner.exe inline-test-runner einsum_tutorials -partition 'Retrieving commandline, environment, or config file variable ocannl_log_level' -source-tree-root ../.. -diff-cmd -)
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
(cd _build/.sandbox/9e6bbd78b2246ae96d92a1b9b09a671b/default/test/operations && .operations_tutorials.inline-tests/inline-test-runner.exe inline-test-runner operations_tutorials -partition test_threefry4x32.ml -source-tree-root ../.. -diff-cmd -)
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
(cd _build/default/test/operations && ./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)
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_never_capture_stdout
Not found, using default false
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_output_prec_in_ll_files
Not found, using default false
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_cc_backend_verify_codesign
Not found, using default false
HERE: test/operations/micrograd_demo_logging.ml:31:21
┌────────────────────┐
│[75]: +_g shape 0:1 │
│┌┬─────────┐        │
│││axis 0   │        │
│├┼─────────┤        │
│││ 2.47e+1 │        │
│└┴─────────┘        │
└────────────────────┘
HERE: test/operations/micrograd_demo_logging.ml:32:21
┌─────────────────┐
│[0]: a shape 0:1 │
│┌┬───────┐       │
│││axis 0 │       │
│├┼───────┤       │
│││ -4.00 │       │
│└┴───────┘       │
└─────────────────┘
┌────────────────────────┐
│[0]: a shape 0:1  grad_a│
│┌┬─────────┐            │
│││axis 0   │            │
│├┼─────────┤            │
│││ 1.38e+2 │            │
│└┴─────────┘            │
└────────────────────────┘
HERE: test/operations/micrograd_demo_logging.ml:33:21
┌─────────────────┐
│[2]: b shape 0:1 │
│┌┬──────┐        │
│││axis 0│        │
│├┼──────┤        │
│││ 2.00 │        │
│└┴──────┘        │
└─────────────────┘
┌────────────────────────┐
│[2]: b shape 0:1  grad_b│
│┌┬─────────┐            │
│││axis 0   │            │
│├┼─────────┤            │
│││ 6.45e+2 │            │
│└┴─────────┘            │
└────────────────────────┘
(cd _build/.sandbox/9e6bbd78b2246ae96d92a1b9b09a671b/default/test/operations && .operations_tutorials.inline-tests/inline-test-runner.exe inline-test-runner operations_tutorials -partition zero2hero_1of7.ml -source-tree-root ../.. -diff-cmd -)
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
File "test/training/moons_demo_mini.expected", line 1, characters 0-0:
/usr/bin/git --no-pager diff --no-index --color=always -u _build/default/test/training/moons_demo_mini.expected _build/default/test/training/moons_demo_mini.exe.output
diff --git a/_build/default/test/training/moons_demo_mini.expected b/_build/default/test/training/moons_demo_mini.exe.output
index 8e540ca..a5f8913 100644
--- a/_build/default/test/training/moons_demo_mini.expected
+++ b/_build/default/test/training/moons_demo_mini.exe.output
@@ -5,16 +5,16 @@ Half-moons scatterplot and decision boundary:
 │********#****************│
 │***##########************│
 │**#############********..│
-│*###****%***####**.....%.│
-│###****%%****.##......%%%│
+│*###****%***####.......%.│
+│###****%%.....##......%%%│
 │##*****%%%....###.....%%.│
 │##***...%%%....##....%%%.│
-│#***....%%%%...##...%%%..│
+│#**.....%%%%...##...%%%..│
 │*........%%%%%%%%%%%%%...│
 │...........%%%%%%%%%%....│
 └─────────────────────────┘Loss:
 ┌─────┬────────────────────────────────────────────────────────────────────────────────────────────────────┐
-│ 2.68│-                                                                                                   │
+│ 2.74│-                                                                                                   │
 │     │                                                                                                    │
 │     │                                                                                                    │
 │     │                                                                                                    │
@@ -41,64 +41,64 @@ Half-moons scatterplot and decision boundary:
 │     │                                                                                                    │
 │     │                                                                                                    │
 │     │                                                                                                    │
-│     │                                                                                                    │
 │     │   -                                                                                                │
-│     │     -                                                                                              │
 │     │                                                                                                    │
-│     │       -    -                                                                                       │
 │     │                                                                                                    │
-│     │      -         -                                                                                   │
-│     │               -    -                                                                               │
-│     │        -  -           -                                                                            │
-│     │          -       -   -            --                                                               │
-│     │             -                                                                                      │
-│     │                                 -             -     -                            -    -            │
-│ 0.00│                 -   -   ---- ---    -- ---- -- - ---  ---- ---- ---- ---- ---- -- - -- - ---- ---- │
+│     │     --                                                                                             │
+│     │       --                                                                                           │
+│     │          -                                                                                         │
+│     │           - -                                                                                      │
+│     │            -   - -   -   -                                                                         │
+│     │                     -                                                                              │
+│     │               -         -                              -                                           │
+│     │                 -  -            -  -        -                                                      │
+│     │                                              -                                                 -   │
+│ 0.00│                       -   -- ---  - -- ----   -- ---- - -- ---- ---- ---- ---- ---- ---- ---- - -- │
 ├─────┼────────────────────────────────────────────────────────────────────────────────────────────────────┤
 │     │0.00                                                                                         7.90e+1│
 │     │                                                step                                                │
 └─────┴────────────────────────────────────────────────────────────────────────────────────────────────────┘Log-loss, for better visibility:
 ┌─────────┬────────────────────────────────────────────────────────────────────────────────────────────────────┐
-│ 9.87e-1 │-                                                                                                   │
+│ 1.01    │-                                                                                                   │
 │         │                                                                                                    │
 │         │ -                                                                                                  │
 │         │  -                                                                                                 │
 │         │                                                                                                    │
 │         │   - -                                                                                              │
-│         │       -    -                                                                                       │
-│         │      -        --   -                                                                               │
-│         │        -  -                                                                                        │
-│         │          -       -   --           --                                                               │
-│         │             -                                                                                      │
-│         │                                 -                                                                  │
-│         │                                               -     -                                 -            │
-│         │                                                                                  -                 │
-│         │                     -                                 -          -    -              -          -  │
-│         │                 -                       -      -                -         -                        │
-│l        │                                                                                            -       │
-│o        │                              -           -         -   -          -               -       -        │
-│g        │                                -                                                                   │
-│         │                                              -   -                                     -      -    │
-│l        │                                                                        -     -  -                  │
-│o        │                                                                                                    │
-│s        │                          -             -                     -                 -                   │
-│s        │                                             -                               -                      │
+│         │      ---                                                                                           │
+│         │          ----  - -   -                                                                             │
+│         │                     -    -                                                                         │
+│         │               -         -                              -                                           │
+│         │                                 -  -                                                               │
+│         │                 -  -                        -                                                      │
 │         │                                                                                                    │
+│         │                                              -                                                 -   │
+│         │                       -        -  -                                   -              -             │
+│         │                                                       -                                            │
+│l        │                                                     -                                      -  -    │
+│o        │                                          -                           -    -               -        │
+│g        │                                                                            -      -   -         -  │
+│         │                                                                 -- -                               │
+│l        │                                                              -                  -      -           │
+│o        │                                                                         -                          │
+│s        │                              -                -    -                                               │
+│s        │                                                                                                    │
+│         │                                                                                  -                 │
 │         │                                                                                                    │
-│         │                                                                                                -   │
+│         │                           -                                                                        │
 │         │                                                                                                    │
+│         │                                                                                -                   │
 │         │                                                                                                    │
 │         │                                                                                                    │
 │         │                                                                                                    │
 │         │                                                                                                    │
-│         │                                                                    -                               │
 │         │                                                                                                    │
 │         │                                                                                                    │
 │         │                                                                                                    │
 │         │                                                                                                    │
 │         │                                                                                                    │
 │         │                                                                                                    │
-│ -1.00e+1│                         - --  -     --    -       -     -- -- -      -  -  -        -    -  -    - │
+│ -1.00e+1│                            -  -     -- -- -    - --     -- -- -   -    -    --      -    -  -    - │
 ├─────────┼────────────────────────────────────────────────────────────────────────────────────────────────────┤
 │         │0.00                                                                                         7.90e+1│
 │         │                                                step                                                │
(cd _build/.sandbox/9e6bbd78b2246ae96d92a1b9b09a671b/default/test/operations && .operations_tutorials.inline-tests/inline-test-runner.exe inline-test-runner operations_tutorials -partition primitive_ops.ml -source-tree-root ../.. -diff-cmd -)
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 7b623db..880ab6b 100644
--- a/_build/default/test/einsum/einsum_trivia_exec.expected
+++ b/_build/default/test/einsum/einsum_trivia_exec.exe.output
@@ -657,159 +657,159 @@ HERE: test/einsum/einsum_trivia_exec.ml:229:21
 │└──────┴────────────────────────────────────┘│
 └─────────────────────────────────────────────┘
 HERE: test/einsum/einsum_trivia_exec.ml:254:21
-┌────────────────────────────────┐
-│[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 │     │
-││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 │ 4.97e+30  3.34e-41  0.00 ││
+││axis 2│ 0.00      2.91e+3   1.00 ││
+││      │ ...       ...       ...  ││
+││      │ 4.68e+3   5.12e+3   4.00 ││
+││      │ 0.00      0.00      5.00 ││
+│├──────┼──────────────────────────┤│
+││1 @ 1 │ 4.97e+30  1.00     0.00  ││
+││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 │ 4.97e+30  2.00     0.00  ││
+││axis 2│ 0.00      2.91e+3  1.00  ││
+││      │ ...       ...      ...   ││
+││      │ 4.68e+3   5.12e+3  4.00  ││
+││      │ 0.00      2.00     5.00  ││
+│├──────┼──────────────────────────┤│
+││3 @ 1 │ 4.97e+30  3.00     0.00  ││
+││axis 2│ 0.00      2.91e+3  1.00  ││
+││      │ ...       ...      ...   ││
+││      │ 4.68e+3   5.12e+3  4.00  ││
+││      │ 0.00      3.00     5.00  ││
+│├──────┼──────────────────────────┤│
+││4 @ 1 │ 4.97e+30  4.00     0.00  ││
+││axis 2│ 0.00      2.91e+3  1.00  ││
+││      │ ...       ...      ...   ││
+││      │ 4.68e+3   5.12e+3  4.00  ││
+││      │ 0.00      4.00     5.00  ││
+│└──────┴──────────────────────────┘│
+├───────────────────────────────────┤
+│┌──────┬──────────────────────────┐│
+││1 @ 0 │axis 3                    ││
+│├──────┼──────────────────────────┤│
+││0 @ 1 │ 4.97e+30  3.34e-41  0.00 ││
+││axis 2│ 1.00      2.91e+3   1.00 ││
+││      │ ...       ...       ...  ││
+││      │ 4.68e+3   5.12e+3   4.00 ││
+││      │ 1.00      0.00      5.00 ││
+│├──────┼──────────────────────────┤│
+││1 @ 1 │ 4.97e+30  1.00     0.00  ││
+││axis 2│ 1.00      2.91e+3  1.00  ││
+││      │ ...       ...      ...   ││
+││      │ 4.68e+3   5.12e+3  4.00  ││
+││      │ 1.00      1.00     5.00  ││
+│├──────┼──────────────────────────┤│
+││2 @ 1 │ 4.97e+30  2.00     0.00  ││
+││axis 2│ 1.00      2.91e+3  1.00  ││
+││      │ ...       ...      ...   ││
+││      │ 4.68e+3   5.12e+3  4.00  ││
+││      │ 1.00      2.00     5.00  ││
+│├──────┼──────────────────────────┤│
+││3 @ 1 │ 4.97e+30  3.00     0.00  ││
+││axis 2│ 1.00      2.91e+3  1.00  ││
+││      │ ...       ...      ...   ││
+││      │ 4.68e+3   5.12e+3  4.00  ││
+││      │ 1.00      3.00     5.00  ││
+│├──────┼──────────────────────────┤│
+││4 @ 1 │ 4.97e+30  4.00     0.00  ││
+││axis 2│ 1.00      2.91e+3  1.00  ││
+││      │ ...       ...      ...   ││
+││      │ 4.68e+3   5.12e+3  4.00  ││
+││      │ 1.00      4.00     5.00  ││
+│└──────┴──────────────────────────┘│
+├───────────────────────────────────┤
+│┌──────┬──────────────────────────┐│
+││2 @ 0 │axis 3                    ││
+│├──────┼──────────────────────────┤│
+││0 @ 1 │ 4.97e+30  3.34e-41  0.00 ││
+││axis 2│ 2.00      2.91e+3   1.00 ││
+││      │ ...       ...       ...  ││
+││      │ 4.68e+3   5.12e+3   4.00 ││
+││      │ 2.00      0.00      5.00 ││
+│├──────┼──────────────────────────┤│
+││1 @ 1 │ 4.97e+30  1.00     0.00  ││
+││axis 2│ 2.00      2.91e+3  1.00  ││
+││      │ ...       ...      ...   ││
+││      │ 4.68e+3   5.12e+3  4.00  ││
+││      │ 2.00      1.00     5.00  ││
+│├──────┼──────────────────────────┤│
+││2 @ 1 │ 4.97e+30  2.00     0.00  ││
+││axis 2│ 2.00      2.91e+3  1.00  ││
+││      │ ...       ...      ...   ││
+││      │ 4.68e+3   5.12e+3  4.00  ││
+││      │ 2.00      2.00     5.00  ││
+│├──────┼──────────────────────────┤│
+││3 @ 1 │ 4.97e+30  3.00     0.00  ││
+││axis 2│ 2.00      2.91e+3  1.00  ││
+││      │ ...       ...      ...   ││
+││      │ 4.68e+3   5.12e+3  4.00  ││
+││      │ 2.00      3.00     5.00  ││
+│├──────┼──────────────────────────┤│
+││4 @ 1 │ 4.97e+30  4.00     0.00  ││
+││axis 2│ 2.00      2.91e+3  1.00  ││
+││      │ ...       ...      ...   ││
+││      │ 4.68e+3   5.12e+3  4.00  ││
+││      │ 2.00      4.00     5.00  ││
+│└──────┴──────────────────────────┘│
+├───────────────────────────────────┤
+│┌──────┬──────────────────────────┐│
+││3 @ 0 │axis 3                    ││
+│├──────┼──────────────────────────┤│
+││0 @ 1 │ 4.97e+30  3.34e-41  0.00 ││
+││axis 2│ 3.00      2.91e+3   1.00 ││
+││      │ ...       ...       ...  ││
+││      │ 4.68e+3   5.12e+3   4.00 ││
+││      │ 3.00      0.00      5.00 ││
+│├──────┼──────────────────────────┤│
+││1 @ 1 │ 4.97e+30  1.00     0.00  ││
+││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 │ 4.97e+30  2.00     0.00  ││
+││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 │ 4.97e+30  3.00     0.00  ││
+││axis 2│ 3.00      2.91e+3  1.00  ││
+││      │ ...       ...      ...   ││
+││      │ 4.68e+3   5.12e+3  4.00  ││
+││      │ 3.00      3.00     5.00  ││
+│├──────┼──────────────────────────┤│
+││4 @ 1 │ 4.97e+30  4.00     0.00  ││
+││axis 2│ 3.00      2.91e+3  1.00  ││
+││      │ ...       ...      ...   ││
+││      │ 4.68e+3   5.12e+3  4.00  ││
+││      │ 3.00      4.00     5.00  ││
+│└──────┴──────────────────────────┘│
+└───────────────────────────────────┘
 HERE: test/einsum/einsum_trivia_exec.ml:255:21
 [1]: =>_ti shape 0:4,1:3  <not-hosted>
 HERE: test/einsum/einsum_trivia_exec.ml:256:21
-┌───────────────────────────┐
-│[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│ 4.97e+30  3.34e-41  0.00 ││
+││      │ 0.00      2.91e+3   1.00 ││
+││      │ ...       ...       ...  ││
+││      │ 4.68e+3   5.12e+3   4.00 ││
+││      │ 0.00      0.00      5.00 ││
+│└──────┴──────────────────────────┘│
+└───────────────────────────────────┘
 HERE: test/einsum/einsum_trivia_exec.ml:278:21
 ┌─────────────────────────────────────────────────────────────────┐
 │[2]: ;=>_c shape 0:3|1:4,2:2                                     │
(cd _build/.sandbox/a823770e23b7d2212d5dd007caeb150d/default/test/einsum && .einsum_tutorials.inline-tests/inline-test-runner.exe inline-test-runner einsum_tutorials -partition einsum_trivia.ml -source-tree-root ../.. -diff-cmd -)
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
File "test/einsum/einsum_trivia.ml", line 1, characters 0-0:
/usr/bin/git --no-pager diff --no-index --color=always -u _build/default/test/einsum/einsum_trivia.ml _build/.sandbox/a823770e23b7d2212d5dd007caeb150d/default/test/einsum/einsum_trivia.ml.corrected
diff --git a/_build/default/test/einsum/einsum_trivia.ml b/_build/.sandbox/a823770e23b7d2212d5dd007caeb150d/default/test/einsum/einsum_trivia.ml.corrected
index 2bcae70..75e2868 100644
--- a/_build/default/test/einsum/einsum_trivia.ml
+++ b/_build/.sandbox/a823770e23b7d2212d5dd007caeb150d/default/test/einsum/einsum_trivia.ml.corrected
@@ -976,144 +976,144 @@ let%expect_test "outer_sum simulating axis concatenation" =
   [%expect
     {|
     HERE: test/einsum/einsum_trivia.ml:975:21
-    ┌────────────────────────────────┐
-    │[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 │     │
-    ││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 │ -3.16e+29  3.55e-41  0.00 ││
+    ││axis 2│ 0.00       -9.93e-9  1.00 ││
+    ││      │ ...        ...       ...  ││
+    ││      │ 2.82e+3    3.04e+3   4.00 ││
+    ││      │ -1.46e+23  1.12e-43  5.00 ││
+    │├──────┼───────────────────────────┤│
+    ││1 @ 1 │ -3.16e+29  1.00     0.00  ││
+    ││axis 2│ 0.00       1.00     1.00  ││
+    ││      │ ...        ...      ...   ││
+    ││      │ 2.82e+3    3.04e+3  4.00  ││
+    ││      │ -1.46e+23  1.00     5.00  ││
+    │├──────┼───────────────────────────┤│
+    ││2 @ 1 │ -3.16e+29  2.00     0.00  ││
+    ││axis 2│ 0.00       2.00     1.00  ││
+    ││      │ ...        ...      ...   ││
+    ││      │ 2.82e+3    3.04e+3  4.00  ││
+    ││      │ -1.46e+23  2.00     5.00  ││
+    │├──────┼───────────────────────────┤│
+    ││3 @ 1 │ -3.16e+29  3.00     0.00  ││
+    ││axis 2│ 0.00       3.00     1.00  ││
+    ││      │ ...        ...      ...   ││
+    ││      │ 2.82e+3    3.04e+3  4.00  ││
+    ││      │ -1.46e+23  3.00     5.00  ││
+    │├──────┼───────────────────────────┤│
+    ││4 @ 1 │ -3.16e+29  4.00     0.00  ││
+    ││axis 2│ 0.00       4.00     1.00  ││
+    ││      │ ...        ...      ...   ││
+    ││      │ 2.82e+3    3.04e+3  4.00  ││
+    ││      │ -1.46e+23  4.00     5.00  ││
+    │└──────┴───────────────────────────┘│
+    ├────────────────────────────────────┤
+    │┌──────┬───────────────────────────┐│
+    ││1 @ 0 │axis 3                     ││
+    │├──────┼───────────────────────────┤│
+    ││0 @ 1 │ -3.16e+29  3.55e-41  0.00 ││
+    ││axis 2│ 1.00       -9.93e-9  1.00 ││
+    ││      │ ...        ...       ...  ││
+    ││      │ 2.82e+3    3.04e+3   4.00 ││
+    ││      │ -1.46e+23  1.12e-43  5.00 ││
+    │├──────┼───────────────────────────┤│
+    ││1 @ 1 │ -3.16e+29  1.00     0.00  ││
+    ││axis 2│ 1.00       1.00     1.00  ││
+    ││      │ ...        ...      ...   ││
+    ││      │ 2.82e+3    3.04e+3  4.00  ││
+    ││      │ -1.46e+23  1.00     5.00  ││
+    │├──────┼───────────────────────────┤│
+    ││2 @ 1 │ -3.16e+29  2.00     0.00  ││
+    ││axis 2│ 1.00       2.00     1.00  ││
+    ││      │ ...        ...      ...   ││
+    ││      │ 2.82e+3    3.04e+3  4.00  ││
+    ││      │ -1.46e+23  2.00     5.00  ││
+    │├──────┼───────────────────────────┤│
+    ││3 @ 1 │ -3.16e+29  3.00     0.00  ││
+    ││axis 2│ 1.00       3.00     1.00  ││
+    ││      │ ...        ...      ...   ││
+    ││      │ 2.82e+3    3.04e+3  4.00  ││
+    ││      │ -1.46e+23  3.00     5.00  ││
+    │├──────┼───────────────────────────┤│
+    ││4 @ 1 │ -3.16e+29  4.00     0.00  ││
+    ││axis 2│ 1.00       4.00     1.00  ││
+    ││      │ ...        ...      ...   ││
+    ││      │ 2.82e+3    3.04e+3  4.00  ││
+    ││      │ -1.46e+23  4.00     5.00  ││
+    │└──────┴───────────────────────────┘│
+    ├────────────────────────────────────┤
+    │┌──────┬───────────────────────────┐│
+    ││2 @ 0 │axis 3                     ││
+    │├──────┼───────────────────────────┤│
+    ││0 @ 1 │ -3.16e+29  3.55e-41  0.00 ││
+    ││axis 2│ 2.00       -9.93e-9  1.00 ││
+    ││      │ ...        ...       ...  ││
+    ││      │ 2.82e+3    3.04e+3   4.00 ││
+    ││      │ -1.46e+23  1.12e-43  5.00 ││
+    │├──────┼───────────────────────────┤│
+    ││1 @ 1 │ -3.16e+29  1.00     0.00  ││
+    ││axis 2│ 2.00       1.00     1.00  ││
+    ││      │ ...        ...      ...   ││
+    ││      │ 2.82e+3    3.04e+3  4.00  ││
+    ││      │ -1.46e+23  1.00     5.00  ││
+    │├──────┼───────────────────────────┤│
+    ││2 @ 1 │ -3.16e+29  2.00     0.00  ││
+    ││axis 2│ 2.00       2.00     1.00  ││
+    ││      │ ...        ...      ...   ││
+    ││      │ 2.82e+3    3.04e+3  4.00  ││
+    ││      │ -1.46e+23  2.00     5.00  ││
+    │├──────┼───────────────────────────┤│
+    ││3 @ 1 │ -3.16e+29  3.00     0.00  ││
+    ││axis 2│ 2.00       3.00     1.00  ││
+    ││      │ ...        ...      ...   ││
+    ││      │ 2.82e+3    3.04e+3  4.00  ││
+    ││      │ -1.46e+23  3.00     5.00  ││
+    │├──────┼───────────────────────────┤│
+    ││4 @ 1 │ -3.16e+29  4.00     0.00  ││
+    ││axis 2│ 2.00       4.00     1.00  ││
+    ││      │ ...        ...      ...   ││
+    ││      │ 2.82e+3    3.04e+3  4.00  ││
+    ││      │ -1.46e+23  4.00     5.00  ││
+    │└──────┴───────────────────────────┘│
+    ├────────────────────────────────────┤
+    │┌──────┬───────────────────────────┐│
+    ││3 @ 0 │axis 3                     ││
+    │├──────┼───────────────────────────┤│
+    ││0 @ 1 │ -3.16e+29  3.55e-41  0.00 ││
+    ││axis 2│ 3.00       -9.93e-9  1.00 ││
+    ││      │ ...        ...       ...  ││
+    ││      │ 2.82e+3    3.04e+3   4.00 ││
+    ││      │ -1.46e+23  1.12e-43  5.00 ││
+    │├──────┼───────────────────────────┤│
+    ││1 @ 1 │ -3.16e+29  1.00     0.00  ││
+    ││axis 2│ 3.00       1.00     1.00  ││
+    ││      │ ...        ...      ...   ││
+    ││      │ 2.82e+3    3.04e+3  4.00  ││
+    ││      │ -1.46e+23  1.00     5.00  ││
+    │├──────┼───────────────────────────┤│
+    ││2 @ 1 │ -3.16e+29  2.00     0.00  ││
+    ││axis 2│ 3.00       2.00     1.00  ││
+    ││      │ ...        ...      ...   ││
+    ││      │ 2.82e+3    3.04e+3  4.00  ││
+    ││      │ -1.46e+23  2.00     5.00  ││
+    │├──────┼───────────────────────────┤│
+    ││3 @ 1 │ -3.16e+29  3.00     0.00  ││
+    ││axis 2│ 3.00       3.00     1.00  ││
+    ││      │ ...        ...      ...   ││
+    ││      │ 2.82e+3    3.04e+3  4.00  ││
+    ││      │ -1.46e+23  3.00     5.00  ││
+    │├──────┼───────────────────────────┤│
+    ││4 @ 1 │ -3.16e+29  4.00     0.00  ││
+    ││axis 2│ 3.00       4.00     1.00  ││
+    ││      │ ...        ...      ...   ││
+    ││      │ 2.82e+3    3.04e+3  4.00  ││
+    ││      │ -1.46e+23  4.00     5.00  ││
+    │└──────┴───────────────────────────┘│
+    └────────────────────────────────────┘
     |}];
   Train.printf ~here:[%here] ~with_code:false ~with_grad:false ti;
   [%expect
@@ -1125,18 +1125,18 @@ let%expect_test "outer_sum simulating axis concatenation" =
   [%expect
     {|
     HERE: test/einsum/einsum_trivia.ml:1124:21
-    ┌───────────────────────────┐
-    │[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│ -3.16e+29  3.55e-41  0.00 ││
+    ││      │ 0.00       -9.93e-9  1.00 ││
+    ││      │ ...        ...       ...  ││
+    ││      │ 2.82e+3    3.04e+3   4.00 ││
+    ││      │ -1.46e+23  1.12e-43  5.00 ││
+    │└──────┴───────────────────────────┘│
+    └────────────────────────────────────┘
     |}]
 
 let%expect_test "einsum with a leftmost input axis preserved as output axis" =
(cd _build/.sandbox/9e6bbd78b2246ae96d92a1b9b09a671b/default/test/operations && .operations_tutorials.inline-tests/inline-test-runner.exe inline-test-runner operations_tutorials -partition hello_world_op.ml -source-tree-root ../.. -diff-cmd -)
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
File "test/operations/zero2hero_1of7.ml", line 1, characters 0-0:
/usr/bin/git --no-pager diff --no-index --color=always -u _build/default/test/operations/zero2hero_1of7.ml _build/.sandbox/9e6bbd78b2246ae96d92a1b9b09a671b/default/test/operations/zero2hero_1of7.ml.corrected
diff --git a/_build/default/test/operations/zero2hero_1of7.ml b/_build/.sandbox/9e6bbd78b2246ae96d92a1b9b09a671b/default/test/operations/zero2hero_1of7.ml.corrected
index 5caa1d9..149c5f9 100644
--- a/_build/default/test/operations/zero2hero_1of7.ml
+++ b/_build/.sandbox/9e6bbd78b2246ae96d92a1b9b09a671b/default/test/operations/zero2hero_1of7.ml.corrected
@@ -273,21 +273,21 @@ let%expect_test "Simple gradients hosted" =
   [%expect
     {|
                        #12 *._l
-                        0.00
+                        -2.30e-5
                        #13 grad_*._l
-                        0.00
+                        -2.30e-5
                  #8 +_d                   │#10 f non-emb
-                  0.00                    │ -2.00
+                  -2.30e-5                │ -2.00
                  #9 grad_+_d              │#11 grad_f
-                  0.00                    │ 0.00
+                  -2.30e-5                │ -2.30e-5
           #4 *._e            │#6 c non-emb│
-           0.00              │ 1.00e+1    │
+           -1.54e+38         │ 1.00e+1    │
           #5 grad_*._e       │#7 grad_c   │
-           0.00              │ 0.00       │
+           -9.66e-10         │ -2.30e-5   │
     #0 a non-emb│#2 b non-emb│            │
      2.00       │ -3.00      │            │
     #1 grad_a   │#3 grad_b   │            │
-     0.00       │ 0.00       │            │
+     -1.49e+38  │ -1.53e+38  │            │
     |}];
   (* Do not update the params: all values and gradients will be at initial points, which are
      specified in the tensor in the brackets. *)
@@ -403,21 +403,21 @@ let%expect_test "Simple gradients virtual" =
   [%expect
     {|
                    #12 *._l
-                    0.00
+                    -2.30e-5
                    #13 grad_*._l Virt/40
                    <void>
              #8 +_d Local/1046            │#10 f non-emb
              <void>                       │ -2.00
              #9 grad_+_d Virt/40          │#11 grad_f
-             <void>                       │ 0.00
+             <void>                       │ -2.30e-5
       #4 *._e Virt/152       │#6 c non-emb│
       <void>                 │ 1.00e+1    │
       #5 grad_*._e Virt/40   │#7 grad_c   │
-      <void>                 │ 0.00       │
+      <void>                 │ -2.30e-5   │
     #0 a non-emb│#2 b non-emb│            │
      2.00       │ -3.00      │            │
     #1 grad_a   │#3 grad_b   │            │
-     0.00       │ 0.00       │            │
+     -1.51e+38  │ -1.54e+38  │            │
     |}];
   (* Do not update the params: all values and gradients will be at initial points, which are
      specified in the tensor in the brackets. *)
File "test/training/bigram.expected", line 1, characters 0-0:
/usr/bin/git --no-pager diff --no-index --color=always -u _build/default/test/training/bigram.expected _build/default/test/training/bigram.exe.output
diff --git a/_build/default/test/training/bigram.expected b/_build/default/test/training/bigram.exe.output
index 47b6993..68f7fac 100644
--- a/_build/default/test/training/bigram.expected
+++ b/_build/default/test/training/bigram.exe.output
@@ -14,20 +14,20 @@ input_size: 229000
 ││      │ 8.92e-1  6.95e-1  ...  2.32e-1  4.84e-2 ││
 │└──────┴─────────────────────────────────────────┘│
 └──────────────────────────────────────────────────┘
-Epoch 0, loss=2.370636
+Epoch 0, loss=2.361352
                                                                                                                                       #38 /._batch_loss
-                                                                                                                                       2.37
+                                                                                                                                       2.36
                                                                                                                                       #39 grad_/._batch_loss
                                                                                                                                        1.00
                                                                                                                                    #36 =>                                                                                                                                         │#35 1000 Virt/40
-                                                                                                                                    2.37e+3                                                                                                                                       │<void>
+                                                                                                                                    2.36e+3                                                                                                                                       │<void>
                                                                                                                                    #37 grad_=>                                                                                                                                    │
                                                                                                                                     1.00e-3                                                                                                                                       │
                                                                                                                                 #33 neg_loss                                                                                                                                      │
-                                                                                                                                 2.46                                                                                                                                             │
+                                                                                                                                 2.42                                                                                                                                             │
                                                                                                                                  2.63                                                                                                                                             │
                                                                                                                                  ...                                                                                                                                              │
-                                                                                                                                 4.05                                                                                                                                             │
+                                                                                                                                 4.08                                                                                                                                             │
                                                                                                                                  3.60                                                                                                                                             │
                                                                                                                                 #34 grad_neg_loss                                                                                                                                 │
                                                                                                                                  1.00e-3                                                                                                                                          │
@@ -36,10 +36,10 @@ Epoch 0, loss=2.370636
                                                                                                                                  1.00e-3                                                                                                                                          │
                                                                                                                                  1.00e-3                                                                                                                                          │
                                                                                                                                    #31 log                                                                                                                                        │
-                                                                                                                                    -2.46                                                                                                                                         │
+                                                                                                                                    -2.42                                                                                                                                         │
                                                                                                                                     -2.63                                                                                                                                         │
                                                                                                                                     ...                                                                                                                                           │
-                                                                                                                                    -4.05                                                                                                                                         │
+                                                                                                                                    -4.08                                                                                                                                         │
                                                                                                                                     -3.60                                                                                                                                         │
                                                                                                                                    #32 grad_log                                                                                                                                   │
                                                                                                                                     -1.00e-3                                                                                                                                      │
@@ -48,17 +48,17 @@ Epoch 0, loss=2.370636
                                                                                                                                     -1.00e-3                                                                                                                                      │
                                                                                                                                     -1.00e-3                                                                                                                                      │
                                                                                                                              #29 =>_output_probs                                                                                                                                  │
-                                                                                                                              8.49e-2                                                                                                                                             │
-                                                                                                                              7.14e-2                                                                                                                                             │
+                                                                                                                              8.82e-2                                                                                                                                             │
+                                                                                                                              7.15e-2                                                                                                                                             │
                                                                                                                               ...                                                                                                                                                 │
-                                                                                                                              1.72e-2                                                                                                                                             │
+                                                                                                                              1.68e-2                                                                                                                                             │
                                                                                                                               2.72e-2                                                                                                                                             │
                                                                                                                              #30 grad_=>_output_probs                                                                                                                             │
-                                                                                                                              -1.17e-2                                                                                                                                            │
-                                                                                                                              -1.40e-2                                                                                                                                            │
+                                                                                                                              -1.13e-2                                                                                                                                            │
+                                                                                                                              -1.39e-2                                                                                                                                            │
                                                                                                                               ...                                                                                                                                                 │
-                                                                                                                              -5.78e-2                                                                                                                                            │
-                                                                                                                              -3.66e-2                                                                                                                                            │
+                                                                                                                              -5.92e-2                                                                                                                                            │
+                                                                                                                              -3.67e-2                                                                                                                                            │
                                                                                                                   #27 *.                                                                                                                                                          │
                                                                                                                    0.00     0.00  ...  0.00  0.00                                                                                                                                 │
                                                                                                                    0.00     0.00  ...  0.00  0.00                                                                                                                                 │
@@ -66,71 +66,71 @@ Epoch 0, loss=2.370636
                                                                                                                    0.00     0.00  ...  0.00  0.00                                                                                                                                 │
                                                                                                                    2.72e-2  0.00  ...  0.00  0.00                                                                                                                                 │
                                                                                                                   #28 grad_*.                                                                                                                                                     │
-                                                                                                                   -1.17e-2  -1.17e-2  ...  -1.17e-2  -1.17e-2                                                                                                                    │
-                                                                                                                   -1.40e-2  -1.40e-2  ...  -1.40e-2  -1.40e-2                                                                                                                    │
+                                                                                                                   -1.13e-2  -1.13e-2  ...  -1.13e-2  -1.13e-2                                                                                                                    │
+                                                                                                                   -1.39e-2  -1.39e-2  ...  -1.39e-2  -1.39e-2                                                                                                                    │
                                                                                                                    ...       ...       ...  ...       ...                                                                                                                         │
-                                                                                                                   -5.78e-2  -5.78e-2  ...  -5.78e-2  -5.78e-2                                                                                                                    │
-                                                                                                                   -3.66e-2  -3.66e-2  ...  -3.66e-2  -3.66e-2                                                                                                                    │
+                                                                                                                   -5.92e-2  -5.92e-2  ...  -5.92e-2  -5.92e-2                                                                                                                    │
+                                                                                                                   -3.67e-2  -3.67e-2  ...  -3.67e-2  -3.67e-2                                                                                                                    │
                                                      #20 /._mlp_@|_input                                                                            │                                                #3 @|_output                                                                 │
-                                                      4.48e-2  2.51e-2  ...  2.61e-2  7.03e-2                                                       │                                                 0.00  0.00  ...  0.00  0.00                                                 │
-                                                      1.08e-1  2.04e-2  ...  2.14e-2  2.25e-2                                                       │                                                 0.00  0.00  ...  0.00  0.00                                                 │
+                                                      4.44e-2  2.52e-2  ...  2.59e-2  7.24e-2                                                       │                                                 0.00  0.00  ...  0.00  0.00                                                 │
+                                                      1.10e-1  2.02e-2  ...  2.11e-2  2.23e-2                                                       │                                                 0.00  0.00  ...  0.00  0.00                                                 │
                                                       ...      ...      ...  ...      ...                                                           │                                                 ...   ...   ...  ...   ...                                                  │
-                                                      2.15e-2  1.07e-2  ...  6.43e-2  1.27e-2                                                       │                                                 0.00  0.00  ...  0.00  0.00                                                 │
-                                                      2.72e-2  3.04e-2  ...  3.33e-2  4.89e-2                                                       │                                                 1.00  0.00  ...  0.00  0.00                                                 │
+                                                      2.10e-2  1.03e-2  ...  6.60e-2  1.25e-2                                                       │                                                 0.00  0.00  ...  0.00  0.00                                                 │
+                                                      2.72e-2  3.03e-2  ...  3.36e-2  4.86e-2                                                       │                                                 1.00  0.00  ...  0.00  0.00                                                 │
                                                      #21 grad_/._mlp_@|_input                                                                       │#1 tensor                                                                                                                    │
                                                       0.00      0.00  ...  0.00  0.00                                                               │ 0.00  0.00  ...  0.00  0.00 │ 0.00  0.00  ...  0.00  0.00 │ ... │ 0.00  0.00  ...  0.00  0.00 │ 0.00  0.00  ...  0.00  0.00 │
                                                       0.00      0.00  ...  0.00  0.00                                                               │ 0.00  0.00  ...  0.00  0.00 │ 0.00  0.00  ...  0.00  0.00 │     │ 0.00  0.00  ...  0.00  0.00 │ 0.00  0.00  ...  0.00  0.00 │
                                                       ...       ...   ...  ...   ...                                                                │ ...   ...   ...  ...   ...  │ ...   ...   ...  ...   ...  │     │ ...   ...   ...  ...   ...  │ ...   ...   ...  ...   ...  │
                                                       0.00      0.00  ...  0.00  0.00                                                               │ 0.00  0.00  ...  0.00  0.00 │ 1.00  0.00  ...  0.00  0.00 │     │ 0.00  0.00  ...  0.00  0.00 │ 0.00  0.00  ...  0.00  0.00 │
-                                                      -3.66e-2  0.00  ...  0.00  0.00                                                               │ 0.00  0.00  ...  0.00  0.00 │ 0.00  0.00  ...  0.00  0.00 │     │ 0.00  0.00  ...  0.00  0.00 │ 1.00  0.00  ...  0.00  0.00 │
+                                                      -3.67e-2  0.00  ...  0.00  0.00                                                               │ 0.00  0.00  ...  0.00  0.00 │ 0.00  0.00  ...  0.00  0.00 │     │ 0.00  0.00  ...  0.00  0.00 │ 1.00  0.00  ...  0.00  0.00 │
 [#16 exp_counts]│                                                            #18 =>                                                                 │                                                                                                                             │
-                │                                                             1.28e+2                                                               │                                                                                                                             │
+                │                                                             1.29e+2                                                               │                                                                                                                             │
                 │                                                             1.55e+2                                                               │                                                                                                                             │
                 │                                                             ...                                                                   │                                                                                                                             │
-                │                                                             2.13e+2                                                               │                                                                                                                             │
-                │                                                             1.26e+2                                                               │                                                                                                                             │
+                │                                                             2.18e+2                                                               │                                                                                                                             │
+                │                                                             1.27e+2                                                               │                                                                                                                             │
                 │                                                            #19 grad_=>                                                            │                                                                                                                             │
-                │                                                             7.76e-6                                                               │                                                                                                                             │
-                │                                                             6.44e-6                                                               │                                                                                                                             │
+                │                                                             7.75e-6                                                               │                                                                                                                             │
+                │                                                             6.43e-6                                                               │                                                                                                                             │
                 │                                                             ...                                                                   │                                                                                                                             │
-                │                                                             4.67e-6                                                               │                                                                                                                             │
-                │                                                             7.87e-6                                                               │                                                                                                                             │
+                │                                                             4.57e-6                                                               │                                                                                                                             │
+                │                                                             7.86e-6                                                               │                                                                                                                             │
                 │                                            #16 exp_counts                                                                         │                                                                                                                             │
-                │                                             5.77     3.24  ...  3.36     9.05                                                     │                                                                                                                             │
-                │                                             1.68e+1  3.16  ...  3.32     3.50                                                     │                                                                                                                             │
+                │                                             5.73     3.25  ...  3.34     9.34                                                     │                                                                                                                             │
+                │                                             1.72e+1  3.15  ...  3.28     3.47                                                     │                                                                                                                             │
                 │                                             ...      ...   ...  ...      ...                                                      │                                                                                                                             │
-                │                                             4.59     2.28  ...  1.37e+1  2.72                                                     │                                                                                                                             │
-                │                                             3.46     3.86  ...  4.23     6.20                                                     │                                                                                                                             │
+                │                                             4.59     2.26  ...  1.44e+1  2.73                                                     │                                                                                                                             │
+                │                                             3.46     3.85  ...  4.28     6.18                                                     │                                                                                                                             │
                 │                                            #17 grad_exp_counts                                                                    │                                                                                                                             │
-                │                                             7.76e-6   7.76e-6  ...  7.76e-6  7.76e-6                                              │                                                                                                                             │
-                │                                             6.44e-6   6.44e-6  ...  6.44e-6  6.44e-6                                              │                                                                                                                             │
+                │                                             7.75e-6   7.75e-6  ...  7.75e-6  7.75e-6                                              │                                                                                                                             │
+                │                                             6.43e-6   6.43e-6  ...  6.43e-6  6.43e-6                                              │                                                                                                                             │
                 │                                             ...       ...      ...  ...      ...                                                  │                                                                                                                             │
-                │                                             4.67e-6   4.67e-6  ...  4.67e-6  4.67e-6                                              │                                                                                                                             │
-                │                                             -2.81e-4  7.87e-6  ...  7.87e-6  7.87e-6                                              │                                                                                                                             │
+                │                                             4.57e-6   4.57e-6  ...  4.57e-6  4.57e-6                                              │                                                                                                                             │
+                │                                             -2.80e-4  7.86e-6  ...  7.86e-6  7.86e-6                                              │                                                                                                                             │
                 │#14 *                                                                                                                              │                                                                                                                             │
-                │ 1.75  1.17     ...  1.21  2.20                                                                                                    │                                                                                                                             │
-                │ 2.82  1.15     ...  1.20  1.25                                                                                                    │                                                                                                                             │
+                │ 1.74  1.18     ...  1.20  2.23                                                                                                    │                                                                                                                             │
+                │ 2.84  1.14     ...  1.18  1.24                                                                                                    │                                                                                                                             │
                 │ ...   ...      ...  ...   ...                                                                                                     │                                                                                                                             │
-                │ 1.52  8.27e-1  ...  2.62  1.00                                                                                                    │                                                                                                                             │
-                │ 1.24  1.35     ...  1.44  1.82                                                                                                    │                                                                                                                             │
+                │ 1.52  8.16e-1  ...  2.66  1.00                                                                                                    │                                                                                                                             │
+                │ 1.24  1.34     ...  1.45  1.82                                                                                                    │                                                                                                                             │
                 │#15 grad_*                                                                                                                         │                                                                                                                             │
-                │ 4.48e-5   2.51e-5  ...  2.61e-5  7.03e-5                                                                                          │                                                                                                                             │
-                │ 1.08e-4   2.04e-5  ...  2.14e-5  2.25e-5                                                                                          │                                                                                                                             │
+                │ 4.44e-5   2.52e-5  ...  2.59e-5  7.24e-5                                                                                          │                                                                                                                             │
+                │ 1.10e-4   2.02e-5  ...  2.11e-5  2.23e-5                                                                                          │                                                                                                                             │
                 │ ...       ...      ...  ...      ...                                                                                              │                                                                                                                             │
-                │ 2.15e-5   1.07e-5  ...  6.43e-5  1.27e-5                                                                                          │                                                                                                                             │
-                │ -9.72e-4  3.04e-5  ...  3.33e-5  4.89e-5                                                                                          │                                                                                                                             │
+                │ 2.10e-5   1.03e-5  ...  6.60e-5  1.25e-5                                                                                          │                                                                                                                             │
+                │ -9.72e-4  3.03e-5  ...  3.36e-5  4.86e-5                                                                                          │                                                                                                                             │
                 │├─#12 +                                                                                                                            │                                                                                                                             │
-                ││  1.15     1.46  ...  2.56     1.52                                                                                               │                                                                                                                             │
-                ││  9.91e-1  1.42  ...  1.15     8.27e-1                                                                                            │                                                                                                                             │
-                ││  ...      ...   ...  ...      ...                                                                                                │                                                                                                                             │
-                ││  4.79     1.54  ...  9.00e-1  2.62                                                                                               │                                                                                                                             │
-                ││  5.19     1.69  ...  1.05     1.00                                                                                               │                                                                                                                             │
+                ││  1.20  1.46  ...  2.58     1.52                                                                                                  │                                                                                                                             │
+                ││  1.02  1.42  ...  1.13     8.16e-1                                                                                               │                                                                                                                             │
+                ││  ...   ...   ...  ...      ...                                                                                                   │                                                                                                                             │
+                ││  4.86  1.54  ...  8.88e-1  2.66                                                                                                  │                                                                                                                             │
+                ││  5.26  1.69  ...  1.06     1.00                                                                                                  │                                                                                                                             │
                 ││ #13 grad_+                                                                                                                       │                                                                                                                             │
-                ││  1.09e-3   0.00  ...  -2.68e-3  -4.50e-4                                                                                         │                                                                                                                             │
-                ││  9.22e-4   0.00  ...  1.53e-3   7.70e-4                                                                                          │                                                                                                                             │
+                ││  1.06e-3   0.00  ...  -2.71e-3  -4.85e-4                                                                                         │                                                                                                                             │
+                ││  8.97e-4   0.00  ...  1.48e-3   7.45e-4                                                                                          │                                                                                                                             │
                 ││  ...       ...   ...  ...       ...                                                                                              │                                                                                                                             │
-                ││  -3.60e-3  0.00  ...  1.19e-3   -3.36e-3                                                                                         │                                                                                                                             │
-                ││  -3.33e-3  0.00  ...  3.95e-4   -8.07e-5                                                                                         │                                                                                                                             │
+                ││  -3.28e-3  0.00  ...  1.15e-3   -3.24e-3                                                                                         │                                                                                                                             │
+                ││  -3.09e-3  0.00  ...  3.72e-4   -9.98e-5                                                                                         │                                                                                                                             │
                 ││ ├─[#9 w]                                                                                                                         │                                                                                                                             │
                 ││ └─#11 1 Virt/40                                                                                                                  │                                                                                                                             │
                 ││   <void>                                                                                                                         │                                                                                                                             │
@@ -145,11 +145,11 @@ Epoch 0, loss=2.370636
                 │     0.00  0.00  ...  0.00  0.00 │ 0.00  0.00  ...  0.00  0.00 │     │ 0.00  0.00  ...  0.00  0.00 │ 0.00  0.00  ...  0.00  0.00   │                                                                                                                             │
                 │     ...   ...   ...  ...   ...  │ ...   ...   ...  ...   ...  │     │ ...   ...   ...  ...   ...  │ ...   ...   ...  ...   ...    │                                                                                                                             │
                 │     0.00  0.00  ...  0.00  0.00 │ 0.00  0.00  ...  1.00  0.00 │     │ 0.00  0.00  ...  0.00  0.00 │ 0.00  0.00  ...  0.00  1.00   │                                                                                                                             │
-                │     0.00  0.00  ...  0.00  0.00 │ 1.00  0.00  ...  0.00  0.00 │     │ 0.00  0.00  ...  0.00  0.00 │ 0.00  0.00  ...  0.00  0.00   │                                                                                                                             │yiyabuaryrwsrioshlrbvi
+                │     0.00  0.00  ...  0.00  0.00 │ 1.00  0.00  ...  0.00  0.00 │     │ 0.00  0.00  ...  0.00  0.00 │ 0.00  0.00  ...  0.00  0.00   │                                                                                                                             │yiyabuaryrwsrioshlraui
 y
-zaqyfdhawgzhfenorih
-zauzvuchanqviceycctushaimnaeibbbuza
-zrcshxsxdcyr
+zaqyfdhawgzhehispoj
+zauzvubjimvreefzaerrreeimnaeibbbuzaann
+zaxsxdcyr
 zaaxxn
 ydqy
 viroh
@@ -160,8 +160,8 @@ yunm
 zxcx
 v
 zashaouucniri
-fel
-vuosmuqyuzqkoar
+gdjgcvismuqyuzqkoar
 zispufkphxooin
 zan
-vcripzakyojchafikvi
+vcripzakyojchaghere
+wyaxygqlelhihakpouqsgjkkhanan
File "test/training/moons_demo.expected", line 1, characters 0-0:
/usr/bin/git --no-pager diff --no-index --color=always -u _build/default/test/training/moons_demo.expected _build/default/test/training/moons_demo.exe.output
diff --git a/_build/default/test/training/moons_demo.expected b/_build/default/test/training/moons_demo.exe.output
index 3d5e347..8f6f4e6 100644
--- a/_build/default/test/training/moons_demo.expected
+++ b/_build/default/test/training/moons_demo.exe.output
@@ -2,49 +2,49 @@ Retrieving commandline, environment, or config file variable ocannl_log_level
 Found 0, in the config file
 Half-moons scatterplot and decision boundary:
 ┌────────────────────────────────────────────────────────────────────────────────────────────────────┐
-│************************************#*********************************************..................│
-│*****************************##*#*#***###**#*************************************...................│
-│*********************##**#*#*###***#*##*#**#*##*********************************....................│
-│*******************####*##########***#####**####*******************************.....................│
-│**************#**###**#**#*#*#*###*#*#**#*#####*****##************************......................│
-│***************#####*#*##****##**####*####**#**#*#*#*************************.......................│
-│*************#*###*#*#*#*******************#*#*#########*********************.......................│
-│*********#**##*#*#*#**************************####*###*#********************........................│
-│********#****###*#*******************************#**#*#*##*#****************........................│
-│******#*#*#*#####************************************#####******************........................│
-│************###**************************************#*#********************........................│
-│********###**#**************........*******************###*##**************.........................│
-│******####*###***********.............********************###**#***********.........................│
-│*****###*##*#**********...........%%....****************#*##*#*************....................%....│
-│****#*#####***********.........%....%.....****************####**#**********....................%....│
-│****##*#*#**********...........%%%%........****************##*************...................%%.%%..│
-│***####*#**********..............%..%........***************####**********...................%..%.%.│
-│**##*#**#*********..............%.%%...........************###**##********...................%..%..%│
-│*##*#*##*********..............%.%%.%...........**********#**##**#********...................%.%..%.│
-│***####*********...............%%.%%.%............***********#####*#*****....................%....%.│
-│*##*##*#******..................%...%...............********##*#*#*******..................%.%%%.%..│
-│#**#**#******..................%%%.%%................*********#*###******...................%....%..│
-│####********.......................%.%.%...............******##*##*******..................%%%%%....│
-│#***##*****......................%%.%%..%................****#####*#****...................%%%%.%...│
-│##*#******........................%%%.%.%.................********##****.................%..%%%.....│
-│#*#******..........................%%.%.....................***#**##****..................%.%.%%%...│
-│#**#***.............................%%%%%..%..................***#******.................%%%........│
-│##****............................%...%.%%%...................##***#***................%%%.%..%.....│
-│*****...............................%.%%%%........................*****..............%..%.%%.%......│
-│****.................................%%.%%%%.............................................%%.%%......│
-│***....................................%..%..%.....................................%%%%.%%%%%.......│
-│*........................................%.%%.%%..%...............................%%%%%%.%.%........│
-│........................................%%.%%.%%%................................%%.%.%...%.........│
-│.............................................%%%.............................%.%.%..%%..%...........│
-│.............................................%.%%.%%%%%..................%%%.%%.%.%..%..............│
-│............................................%%%.%%%%%%..%.%%..%%.%%%%%%.%%.%%%....%.................│
-│.............................................%..%...%%%%...%.%%%.%%.%%.....%%..%%%..%...............│
-│....................................................%..%%%%%.%.%.%.%.%..%%%%..%%....................│
-│...................................................%%%...%%.%.%...%...%%..%..%%.....................│
-│.....................................................%....%..%.%%%%%................................│
+│************************************#***************************************************************│
+│*****************************##*#*#***###**#********************************************************│
+│*********************##**#*#*###***#*##*#**#*##*****************************************************│
+│*******************####*##########***#####**####****************************************************│
+│**************#**###**#**#*#*#*###*#*#**#*#####*****##**********************************************│
+│***************#####*#*##****##**####*####**#**#*#*#************************************************│
+│*************#*###*#*#*#*******************#*#*#########********************************************│
+│*********#**##*#*#*#**************************####*###*#********************************************│
+│********#****###*#*******************************#**#*#*##*#****************************************│
+│******#*#*#*#####************************************#####******************************************│
+│************###**************************************#*#**************************..................│
+│********###**#*****************************************###.##.......................................│
+│******####*###*******************.........................###..#....................................│
+│*****###*##*#*****************....%%....................#.##.#.................................%....│
+│****#*#####*****************...%....%.....................####..#..............................%....│
+│****##*#*#****************.....%%%%........................##................................%%.%%..│
+│***####*#***************.........%..%.......................####.............................%..%.%.│
+│**##*#**#*************..........%.%%.......................###..##...........................%..%..%│
+│*##*#*##*************..........%.%%.%.....................#..##..#...........................%.%..%.│
+│***####************............%%.%%.%.......................#####.#.........................%....%.│
+│*##*##*#**********..............%...%.......................##.#.#.........................%.%%%.%..│
+│#**#**#**********..............%%%.%%.........................#.###.........................%....%..│
+│####************...................%.%.%.....................##.##.........................%%%%%....│
+│#***##*********..................%%.%%..%....................#####.#.......................%%%%.%...│
+│##*#**********....................%%%.%.%.........................##.....................%..%%%.....│
+│#*#**********......................%%.%........................#..##......................%.%.%%%...│
+│#**#********........................%%%%%..%.....................#.......................%%%........│
+│##*********.......................%...%.%%%...................##...#...................%%%.%..%.....│
+│**********..........................%.%%%%...........................................%..%.%%.%......│
+│*********............................%%.%%%%.............................................%%.%%......│
+│********...............................%..%..%.....................................%%%%.%%%%%.......│
+│*******..................................%.%%.%%..%...............................%%%%%%.%.%........│
+│*******.................................%%.%%.%%%................................%%.%.%...%.........│
+│******.......................................%%%.............................%.%.%..%%..%...........│
+│*****........................................%.%%.%%%%%..................%%%.%%.%.%..%..............│
+│****........................................%%%.%%%%%%..%.%%..%%.%%%%%%.%%.%%%....%.................│
+│***..........................................%..%...%%%%...%.%%%.%%.%%.....%%..%%%..%...............│
+│**..................................................%..%%%%%.%.%.%.%.%..%%%%..%%....................│
+│*..................................................%%%...%%.%.%...%...%%..%..%%.....................│
+│*....................................................%....%..%.%%%%%................................│
 └────────────────────────────────────────────────────────────────────────────────────────────────────┘Loss:
 ┌────────┬────────────────────────────────────────────────────────────────────────────────────────────────────┐
-│ 2.38e+1│-                                                                                                   │
+│ 3.08e+1│-                                                                                                   │
 │        │                                                                                                    │
 │        │                                                                                                    │
 │        │                                                                                                    │
@@ -70,64 +70,64 @@ Half-moons scatterplot and decision boundary:
 │        │                                                                                                    │
 │        │                                                                                                    │
 │        │                                                                                                    │
-│        │-                                                                                                   │
 │        │                                                                                                    │
 │        │                                                                                                    │
 │        │                                                                                                    │
+│        │-                                                                                                   │
 │        │                                                                                                    │
 │        │                                                                                                    │
 │        │                                                                                                    │
-│        │-                                                                                                   │
-│        │   -                                                                                                │
-│        │ -    - -  - - -- -                 -        -                                                      │
-│        │     -    -         -  - -         -- - -- -  -    -                                                │
-│        │-- - -- - -    -- - -- -  - - -- - -- -         - -  - -- - -- - -- -  -   -                        │
-│        │---- -- - -- - ---- -- - ---- -- - -- - -- - --    -                  -  -  - - -- - --   -         │
+│        │                                                                                                    │
+│        │                                                                                                    │
+│        │-- -                                                                                                │
+│        │          -     - -                                                                                 │
+│        │     -- - -- - -    -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- -  -   --      -      │
+│        │-- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - │
 │ 0.00   │----------------------------------------------------------------------------------------------------│
 ├────────┼────────────────────────────────────────────────────────────────────────────────────────────────────┤
 │        │0.00                                                                                         4.79e+3│
 │        │                                                step                                                │
 └────────┴────────────────────────────────────────────────────────────────────────────────────────────────────┘Log-loss, for better visibility:
 ┌─────────┬────────────────────────────────────────────────────────────────────────────────────────────────────┐
-│ 3.17    │-                                                                                                   │
+│ 3.42    │-                                                                                                   │
 │         │                                                                                                    │
 │         │                                                                                                    │
 │         │                                                                                                    │
 │         │-                                                                                                   │
 │         │                                                                                                    │
-│         │-  -                                                                                                │
-│         │ -   -- - -- - -- - -               -        --                                                     │
-│         │      -           -  - - -- -  -   -- - -- -    - -- -  -    -                                      │
-│         │-- - -- - -- - ---  -  - -- - -- - -- -                -  - -  - -- -  -   -                        │
-│         │---- -- - -- - ---- -- - ---- -- - -- - --   --                       -  -       -    -             │
-│         │-  - -- - -- - -    -    -  - -  - --      -       - -                      - - -  - -  - -         │
-│         │- -  -- -    -   --  ---   --  - - -  - --   -  - -                                          -      │
-│         │- --  -      -   -                  - -  -   -         -- -  -                             -      - │
-│         │-  - -    --        --           - -- - --      -    - -    -    -  -                          --   │
-│         │     --   --      -   --      -     -         -   --    - -  -   -  -                               │
-│l        │-  -    -      -    --   - --   --      -  - -                    -        -             -       -  │
-│o        │ -   ---   - -         -      - -  -  -  - -         -      -             -          -              │
-│g        │ -  - -- -    -          -         --    -  -   -  -              -    -         --    -    -       │
-│         │- --    -    -  -   ---    -     -------- - - --                  --           -    -          -    │
-│l        │--    -- - -          -     -  -- -- --- -- -     - - -    -  - -  -  -   --                  -    -│
-│o        │--  - --  ----        -     - --    -- -- -  --   ---- - - -         -              -               │
-│s        │--    --   -    -     -          -- -- --   -  - ---     -   - -   -         --           --        │
-│s        │ -- - --   -         ---    --    ------ --     --    -- -    -             --               -      │
-│         │        -  -     -   --   -  -   - - - --    --   -   ---  --           -        - - -    -         │
-│         │-  - ---      -      -       -   ---    -    - - - -   --  -    -       -    -  -             -  -  │
-│         │       - - -          -     -    --  ---   - -  -  -   -  -       - -   -       -   -               │
-│         │-  -                           - -   - -    -     -         -  -                          -         │
-│         │-                         -     --    - - - -  -    -        -       -   -        -                 │
-│         │                               - -   -  -      -    -         -- -              -     -             │
-│         │-   -                --          -      - --   -               -                                    │
-│         │       -                  -   -    - --     -            -               -                          │
-│         │                                  -     -        -               -         -                        │
-│         │                                -         -           -      -                 -              -     │
-│         │                                                 -                                                  │
-│         │      -                                                                                             │
-│         │                                                      -                                             │
-│         │                                                                -                                   │
 │         │                                                                                                    │
+│         │-- -                                                                                                │
+│         │     -  - --   -- - -- - -- - -- - -- - -                                                           │
+│         │      - - -  -                           - - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - │
+│         │-- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - │
+│         │-- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - │
+│         │- -  ---- --   -  - --   --   -- - -- - --        -- -  - -  - -  - -  -   -  - --   -- - -    --   │
+│         │- -    -   - -         - -                      -      -              -     -      -       - -      │
+│         │ - -         -  -           -                -              -    -                      -         - │
+│         │-  -      -    --                     -                             -    - -                        │
+│l        │     -  --   - -         -- -                 -    -         -    -                        -        │
+│o        │----   -   - -      -            -  - -    -     --  -  -    -       - - -     - - - -       ---- --│
+│g        │-- -       -        -          -       -    - - -     -   --   -  - -     - - ---     - --   -  -   │
+│         │ - -    ---   -    - - -  -  --   --  -  - -  - -  -  - - - -                       -               │
+│l        │ -     --- -  -  --- -  - - -  -    --   -  -- -      - -    - --   -  -         -    -   --        │
+│o        │    - -- ----   ---- -- -    -   --    -   -  ---- - -         -    -  -  - - -  - -    -         - │
+│s        │- - -    - - -  -  - ---- -- ---  -   -  -    -  - - -       -  -    -      -      - -   -   --    -│
+│s        │--    --  - ---  -    - - -- - ---- -- - - -  -  - - --   --   -- - -- - ---- --    - - -- -  --- --│
+│         │- -  --- --  ----- - -  - -- - -- -    - -- - -  - -    - -        -  -- -- - -- - -  - -    -  ----│
+│         │      -  --  -     - -- - --           ------ -       - -  - -- - ---   --- - -- - -- - ---  -- - --│
+│         │-   - -  -  - -  -  - -          - ---   -  -    - ------  - - -- - -- -  - - ---- -     - -- - ----│
+│         │            -       --     -   -  - --   -  -      -- - -  -  --- ----  - - --   ----    - - -  -   │
+│         │  - -    -- -   -  -        -     -            - -  -      -         - - -- -  -   -- ---  -  - -  -│
+│         │       --   -                     - --   -          -   -  - -- - -  - -       - -     - -    - ----│
+│         │- --  -   - - -      -           -  -              - -         -       -  -              -  - -     │
+│         │                                  -        -     -   --  - -         -      --     -  -      -- -   │
+│         │  -                        -         -         -                          -         -         -   - │
+│         │        -                       -                         -                                  -      │
+│         │                                            -         -              -         - -  - -             │
+│         │                                               -          -                                -      - │
+│         │                                         -               -                                 -        │
+│         │                  -                                                                             -  -│
+│         │                                                                              -     -               │
 │ -1.00e+1│----------------------------------------------------------------------------------------------------│
 ├─────────┼────────────────────────────────────────────────────────────────────────────────────────────────────┤
 │         │0.00                                                                                         4.79e+3│
File "test/training/moons_demo_parallel.expected", line 1, characters 0-0:
/usr/bin/git --no-pager diff --no-index --color=always -u _build/default/test/training/moons_demo_parallel.expected _build/default/test/training/moons_demo_parallel.exe.output
diff --git a/_build/default/test/training/moons_demo_parallel.expected b/_build/default/test/training/moons_demo_parallel.exe.output
index 7d67fbc..aa13ed6 100644
--- a/_build/default/test/training/moons_demo_parallel.expected
+++ b/_build/default/test/training/moons_demo_parallel.exe.output
@@ -1,3 +1,138 @@
 Retrieving commandline, environment, or config file variable ocannl_log_level
 Found 0, in the config file
-Success
+
+Half-moons scatterplot and decision boundary:
+┌────────────────────────────────────────────────────────────────────────────────────────────────────┐
+│************************************#***************************************************************│
+│*****************************##*#*#***###**#********************************************************│
+│*********************##**#*#*###***#*##*#**#*##*****************************************************│
+│*******************####*##########***#####**####****************************************************│
+│**************#**###**#**#*#*#*###*#*#**#*#####*****##**********************************************│
+│***************#####*#*##****##**####*####**#**#*#*#************************************************│
+│*************#*###*#*#*#*******************#*#*#########********************************************│
+│*********#**##*#*#*#**************************####*###*#********************************************│
+│********#****###*#*******************************#**#*#*##*#****************************************│
+│******#*#*#*#####************************************#####******************************************│
+│************###**************************************#*#********************************************│
+│********###**#*****************************************###*##***************************************│
+│******####*###********************..........**************###**#************************************│
+│*****###*##*#******************...%%....................#*##*#***********......................%....│
+│****#*#####*****************...%....%.....................####..#..............................%....│
+│****##*#*#****************.....%%%%........................##................................%%.%%..│
+│***####*#****************........%..%.......................####.............................%..%.%.│
+│**##*#**#**************.........%.%%.......................###..##...........................%..%..%│
+│*##*#*##*************..........%.%%.%.....................#..##..#...........................%.%..%.│
+│***####*************...........%%.%%.%.......................#####.#.........................%....%.│
+│*##*##*#**********..............%...%.......................##.#.#.........................%.%%%.%..│
+│#**#**#**********..............%%%.%%.........................#.###.........................%....%..│
+│####***********....................%.%.%.....................##.##.........................%%%%%....│
+│#***##********...................%%.%%..%....................#####.#.......................%%%%.%...│
+│##*#********......................%%%.%.%.........................##.....................%..%%%.....│
+│#*#*******.........................%%.%........................#..##......................%.%.%%%...│
+│#**#*****...........................%%%%%..%.....................#.......................%%%........│
+│##******..........................%...%.%%%...................##...#...................%%%.%..%.....│
+│*******.............................%.%%%%...........................................%..%.%%.%......│
+│******...............................%%.%%%%.............................................%%.%%......│
+│******.................................%..%..%.....................................%%%%.%%%%%.......│
+│*****....................................%.%%.%%..%...............................%%%%%%.%.%........│
+│*****...................................%%.%%.%%%................................%%.%.%...%.........│
+│****.........................................%%%.............................%.%.%..%%..%...........│
+│***..........................................%.%%.%%%%%..................%%%.%%.%.%..%..............│
+│***.........................................%%%.%%%%%%..%.%%..%%.%%%%%%.%%.%%%....%.................│
+│**...........................................%..%...%%%%...%.%%%.%%.%%.....%%..%%%..%...............│
+│**..................................................%..%%%%%.%.%.%.%.%..%%%%..%%....................│
+│*..................................................%%%...%%.%.%...%...%%..%..%%.....................│
+│.....................................................%....%..%.%%%%%................................│
+└────────────────────────────────────────────────────────────────────────────────────────────────────┘
+Batch Log-loss:
+┌─────────┬────────────────────────────────────────────────────────────────────────────────────────────────────┐
+│ 7.72    │-                                                                                                   │
+│         │                                                                                                    │
+│         │-                                                                                                   │
+│         │-                                                                                                   │
+│         │                                                                                                    │
+│         │ - - --        -         -                                                                          │
+│         │--    - - -- -  - - -- -  - - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - │
+│         │-- - -- - ---- -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - │
+│         │--           -      - -- - -- ---- ---- -- - -- - --        --   -  - -  - -- - -- -  -    - -  -   │
+│         │-- -   -- -                      -    -   -  -    -- - -- -    -  -    -             -  - --   -  - │
+│         │-------        -  --                       -   -              -                              -      │
+│         │ -   - -    -- - --                             - - -- -   ---  ----- -  - - -- -- - --   -     -   │
+│         │ ---      --- -   - -   -   -     -        -  -           -- - -- - --  ---       ---  --  - - - -- │
+│b        │        --   -                 -   -   - -  --  -     - --     -    -- -  -   --   -  -     --  - --│
+│a        │        -        -    -   -  -  --  - -   -        --       -          -    -  - -         -  -     │
+│t        │                    -  -  -   -   -   -    --    -   -  -                                -          │
+│c        │               -      ----  --       --        --  -      -      -                       -    -     │
+│h        │      -           -        -            -                 -                 -           --          │
+│         │    -                        -           -    -       -   -                                -        │
+│l        │             -                                            -                       - -               │
+│o        │     -             -           -                              -                                     │
+│g        │                     -           --                                                                 │
+│         │                   -             -                                                                  │
+│l        │       -                                    -                                                       │
+│o        │                                                                                                    │
+│s        │                                                                                                    │
+│s        │                                                                                                    │
+│         │                                                                                                    │
+│         │                                                                                                    │
+│         │                                                                                                    │
+│         │                                                                                                    │
+│         │                                                                                                    │
+│         │                                                                                                    │
+│         │                                                                                                    │
+│         │                                                                                                    │
+│         │                                                                                                    │
+│         │                                                                                                    │
+│         │                                                                                                    │
+│         │                                                                                                    │
+│ -1.04e+1│  --------------------------------------------------------------------------------------------------│
+├─────────┼────────────────────────────────────────────────────────────────────────────────────────────────────┤
+│         │0.00                                                                                         1.19e+3│
+│         │                                                step                                                │
+└─────────┴────────────────────────────────────────────────────────────────────────────────────────────────────┘
+Epoch Log-loss:
+┌─────┬────────────────────────────────────────────────────────────────────────────────────────────────────┐
+│ 8.55│-                                                                                                   │
+│     │                                                                                                    │
+│     │                                                                                                    │
+│     │                                                                                                    │
+│     │                                                                                                    │
+│     │                                                                                                    │
+│     │                                                                                                    │
+│     │                                                                                                    │
+│     │                                                                                                    │
+│     │                                                                                                    │
+│     │                                                                                                    │
+│     │                                                                                                    │
+│     │                                                                                                    │
+│e    │                                                                                                    │
+│p    │                                                                                                    │
+│o    │                                                                                                    │
+│c    │                                                                                                    │
+│h    │                                                                                                    │
+│     │                                                                                                    │
+│l    │                                                                                                    │
+│o    │                                                                                                    │
+│g    │                                                                                                    │
+│     │                                                                                                    │
+│l    │                                                                                                    │
+│o    │                                                                                                    │
+│s    │                                                                                                    │
+│s    │                                                                                                    │
+│     │                                                                                                    │
+│     │                                                                                                    │
+│     │   -                                                                                                │
+│     │     -                                                                                              │
+│     │ -    -        -                                                                                    │
+│     │                                                                                                    │
+│     │                                                                                                    │
+│     │        -  -        -    -                                                                          │
+│     │          -       -    -                                                                            │
+│     │             -  -    -    - - -    -                                                                │
+│     │                               - -  - - -- - -         -  - --   -- - -                             │
+│     │                                              - -    -         -       - - -- - -- - --   -         │
+│ 6.07│                                                  --    -                               -  - - -- - │
+├─────┼────────────────────────────────────────────────────────────────────────────────────────────────────┤
+│     │0.00                                                                                         5.90e+1│
+│     │                                                step                                                │
+└─────┴────────────────────────────────────────────────────────────────────────────────────────────────────┘
\ No newline at end of file
"/usr/bin/env" "bash" "-c" "opam exec -- dune build @install @check @runtest && rm -rf _build" failed with exit status 1
2025-08-09 21:09.29: Job failed: Failed: Build failed