CI: minimum supported PyTorch check - #35

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pggPL wants to merge 18 commits into

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pytorch21_build_ci

Commits on Aug 18, 2026

Add CI workflow building TE against torch 2.1
pggPL
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3875204
Remove MAX_JOBS=1 from pytorch 2.1 build workflow
pggPL
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fba3898
Use MAX_JOBS=2 in pytorch 2.1 workflow, unbounded build OOMs the runner
pggPL
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3b600dd
Point TE build at apt cudnn9, torch 2.1 pip deps shadow it with cudnn 8.9
pggPL
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dce613c
Avoid passing std::optional to at::get_generator_or_default, torch 2.1 needs c10::optional
pggPL
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061834f
Gate NCCL EP in torch extension on nccl_ep_enabled, matching common CMake
pggPL
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32a28ef
Pass comm streams as raw cudaStream_t handles, torch 2.1 pybind lacks c10::Stream caster
pggPL
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04b4b0f
Revert "Pass comm streams as raw cudaStream_t handles, torch 2.1 pybind lacks c10::Stream caster"
pggPL
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4a3ad66
Revert "Avoid passing std::optional to at::get_generator_or_default, torch 2.1 needs c10::optional"
pggPL
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2087bd0
Retarget CI workflow to torch 2.8
pggPL
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690701a
Rename workflow to Minimum supported PyTorch, parametrize torch version
pggPL
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7b7c6be
Add Minimum supported JAX job, rename workflow to minimum_versions
pggPL
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b86e86c
Add packaging to min-jax job deps
pggPL
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12f725f
Skip NCCL EP in torch extension when torch lacks symm-mem headers; build min-torch job on sm90
pggPL
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f094de7
Fix min-versions jobs: pydantic for jax import, libcuda stub for sm90 import
pggPL
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98324dd

Commits on Aug 19, 2026

Extract torch symm-mem EP gate into nccl_ep_supported_by_torch helper
pggPL
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f034956
Tidy nccl_ep_supported_by_torch
pggPL
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63311ef
Compile out EP zero-copy path when torch lacks symm-mem headers
pggPL
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e64a6a1