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[attn][tiny fix] fix attn backend in MultiHeadAttention (#11463)

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Signed-off-by: Mengqing Cao <cmq0113@163.com>
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Mengqing Cao 2024-12-24 20:39:36 +08:00 committed by GitHub
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commit 5c7963249d
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vllm/attention/layer.py
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@ -191,6 +191,7 @@ class MultiHeadAttention(nn.Module):
kv_cache_dtype=None,
block_size=16,
is_attention_free=False)
attn_backend = backend_name_to_enum(attn_backend.get_name())
if attn_backend in {_Backend.FLASH_ATTN, _Backend.FLASH_ATTN_VLLM_V1}:
attn_backend = _Backend.XFORMERS