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Fix FA2 fallback for Blackwell V1 (#19781)

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Signed-off-by: mgoin <mgoin64@gmail.com>
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Michael Goin 2025-06-19 10:53:55 +09:00 committed by GitHub
parent dfada85eee
commit 36239f79dd
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vllm/platforms/cuda.py
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@ -255,7 +255,7 @@ class CudaPlatformBase(Platform):
"install FlashInfer for better performance.")
pass
# FlashAttention is the default for SM 8.0+ GPUs
elif cls.has_device_capability(80):
if cls.has_device_capability(80):
logger.info_once("Using Flash Attention backend on V1 engine.")
return ("vllm.v1.attention.backends."
"flash_attn.FlashAttentionBackend")