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Try to fix ace text encoder slowness on some configs. (#12290)

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comfyanonymous 2026-02-04 16:37:05 -08:00 committed by GitHub
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comfy/ops.py
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@ -54,6 +54,8 @@ try:
SDPA_BACKEND_PRIORITY.insert(0, SDPBackend.CUDNN_ATTENTION)
def scaled_dot_product_attention(q, k, v, *args, **kwargs):
if q.nelement() < 1024 * 128: # arbitrary number, for small inputs cudnn attention seems slower
return torch.nn.functional.scaled_dot_product_attention(q, k, v, *args, **kwargs)
with sdpa_kernel(SDPA_BACKEND_PRIORITY, set_priority=True):
return torch.nn.functional.scaled_dot_product_attention(q, k, v, *args, **kwargs)
else: