[FA4] Update flash-attention to latest upstream FA4#38690
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LucasWilkinson merged 2 commits intovllm-project:mainfrom Apr 2, 2026
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[FA4] Update flash-attention to latest upstream FA4#38690LucasWilkinson merged 2 commits intovllm-project:mainfrom
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Point vllm_flash_attn.cmake to updated FA branch (95e93d2) which syncs flash_attn/cute/ with upstream Dao-AILab/flash-attention. Bump nvidia-cutlass-dsl>=4.4.2 and quack-kernels>=0.3.3 to match upstream FA4 requirements. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> Signed-off-by: Lucas Wilkinson <lwilkins@redhat.com>
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This will fix #36763 thanks to the inclusion of Dao-AILab/flash-attention@0293155 |
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- vLLM: v0.19.0 -> v0.19.1rc0 - FlashInfer: v0.6.6 -> v0.6.7 v0.19.1rc0 is the first release with the FA4 NaN fix (PR #38690) for Blackwell/SM100 and TRTLLM as default MLA prefill backend. Eliminates the need for Dockerfile-level FA4 patching. Refs: vllm-project/vllm#38690, INF-353
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Testing PR for updating FA4 to latest upstream