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[Attention][MLA] Re-enable FA4 as default MLA prefill backend #38819

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Merged
LucasWilkinson merged 2 commits into from
Apr 6, 2026
+1 −1
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[Attention][MLA] Re-enable FA4 as default MLA prefill backend #38819

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Revert "[Bugfix][MLA] Change default SM100 MLA prefill backend back t…
MatthewBonanni Apr 2, 2026
4f20ad4
Merge branch 'main' into revert-38562-fi_mla_prefill_default
MatthewBonanni Apr 6, 2026
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2 changes: 1 addition & 1 deletion vllm/config/attention.py
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Expand Up @@ -30,7 +30,7 @@ class AttentionConfig:
use_cudnn_prefill: bool = False
"""Whether to use cudnn prefill."""

use_trtllm_ragged_deepseek_prefill: bool = True
use_trtllm_ragged_deepseek_prefill: bool = False
"""Whether to use TRTLLM ragged deepseek prefill."""

use_trtllm_attention: bool | None = None
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