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Skip the CPU bfloat16 tests that crash PyTorch on Windows - #11

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wrignj08 merged 1 commit into
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ci/skip-windows-cpu-bf16
Nov 11, 2026
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wrignj08 merged 1 commit into
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ci/skip-windows-cpu-bf16

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On some of GitHub's Windows runners, a bfloat16 nn.Linear on the CPU crashes inside PyTorch with 0xc000001d (illegal instruction). So the required Windows check passed or failed depending on which machine the job got: it failed on #8 and twice last week on the old repo. Same packages each time (torch 2.15.0); the crash stack ends in torch/nn/modules/linear.py.

The three tests that hit it now skip on Windows with the reason written beside them, and the README's mixed-precision tip notes the limitation. Nothing in the library changes.

🤖 Generated with Claude Code

On some of GitHub's Windows runners a bfloat16 nn.Linear on the CPU dies with 0xc000001d (illegal
instruction) inside PyTorch, so the required Windows check failed or passed depending on the
machine. The three tests that hit it skip on Windows, and the README notes the limitation.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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wrignj08 merged commit cc4dc8e into main Nov 11, 2026
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