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[bug fix] Issue 3700 sparse mla sm121 hang
- #4732
#4732
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kahyunnam
merged 3 commits into
flashinfer-ai:main
flashinfer-ai/flashinfer:main
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kahyunnam:fix/issue-3700-sparse-mla-sm121-hang
kahyunnam/flashinfer:fix/issue-3700-sparse-mla-sm121-hang
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Sep 1, 2026
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[bug fix] Issue 3700 sparse mla sm121 hang
#4732
kahyunnam
merged 3 commits into
flashinfer-ai:main
flashinfer-ai/flashinfer:main
from
kahyunnam:fix/issue-3700-sparse-mla-sm121-hang
kahyunnam/flashinfer:fix/issue-3700-sparse-mla-sm121-hang
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Commits
Commits on Aug 25, 2026
fix(sparse-mla): add IO-warp execution barrier in prefill KV gather
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kahyunnam
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fix(sparse-mla): gate IO-warp barrier to sm_121
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fix(sparse-mla): alternate barrier ids in prefill KV handshake
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