[CI/Test Fix] Fix CP tests on Blackwell#29338
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vllm-bot merged 1 commit intovllm-project:mainfrom Nov 25, 2025
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This pull request aims to fix a CI test on Blackwell by removing an assertion. However, this change is problematic as it hides a deeper issue. The assertion assert out.is_contiguous() was added for a valid reason: downstream distributed operations like reduce_scatter require contiguous tensors. Removing it will likely lead to runtime errors. The root cause is that correct_attn_out no longer guarantees a contiguous output after a previous partial revert. The correct solution is to restore the logic in correct_attn_out to ensure its output is always contiguous.
mgoin
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devpatelio
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Nov 29, 2025
Signed-off-by: Lucas Wilkinson <lwilkins@redhat.com>
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Dec 1, 2025
Signed-off-by: Lucas Wilkinson <lwilkins@redhat.com>
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#28718 inadvertently undid part of #28404