Remove deprecated multi-stream infrastructure from backend layer
Remove the config type (Only_devices_parallel | For_parallel_copying |
Most_parallel_streams), the sharing type (Per_stream | Shared_cross_streams),
cross-stream synchronization logic (wait_for_all, shared_writer_streams,
host_reading_streams, host_writing_streams, reader_streams, owner_stream),
the Streaming_for merge buffer variant, suggested_num_streams from all
backends, round_robin/round_robin_dry_run from train.ml, and cross-stream
candidate tracking. Replace cross_stream_candidates with constant_buffer_cache
for per-device read-only buffer caching. Simplify device_to_device to use
phys_equal pointer-identity check instead of the old same-device fast-path
guard. Update documentation to reflect the cleanup.
Closes #341
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
e1cc3d
-
Apr 26 19:04 +00:00