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Added env var TORCH_BACKENDS_CUDNN_ENABLED, defaults to 1.

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This commit is contained in:
Christopher Anderson 2025-08-25 08:56:48 +10:00
parent 7d457bc3d0
commit 954644ef83
1 changed files with 5 additions and 1 deletions
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6
comfy/customzluda/zluda.py
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@ -652,7 +652,11 @@ def do_hijack():
print(" :: Configuring PyTorch backends...")
torch.backends.cuda.enable_mem_efficient_sdp(False)
torch.backends.cuda.enable_mem_efficient_sdp = do_nothing
torch.backends.cudnn.enabled = True
torch.backends.cudnn.enabled = os.environ.get("TORCH_BACKENDS_CUDNN_ENABLED", "1").strip().lower() not in {"0", "off", "false", "disable", "disabled", "no"}
if torch.backends.cudnn.enabled:
print(" :: Enabled cuDNN")
else:
print(" :: Disabled cuDNN")
if hasattr(torch.backends.cuda, "enable_flash_sdp"):
torch.backends.cuda.enable_flash_sdp(True)
print(" :: Disabled CUDA flash attention")