Fix FlashInfer NVLS routing buffer race - #7263
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Signed-off-by: wdykas <wdykas@nvidia.com>
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September 11, 2026 23:04
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/ok to test 2878c0d |
wdykas
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September 11, 2026 23:08
wdykas
marked this pull request as ready for review
September 11, 2026 23:08
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What does this PR do?
Clear the FlashInfer NVLS routing buffer before the fused metadata synchronization fence. Clearing it afterwards can race with an early peer all-gather write and replace valid routing entries with
-1.This fix applies to the ordinary FlashInfer + NVLS inference path and is independent of batch-invariant mode.
Testing