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Only unpin tensor if it was pinned by ComfyUI (#10677)

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comfyanonymous 2025-11-07 08:15:05 -08:00 committed by GitHub
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commit a1a70362ca
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1 changed files with 10 additions and 5 deletions
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15
comfy/model_management.py
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@ -1129,13 +1129,18 @@ def unpin_memory(tensor):
if not is_device_cpu(tensor.device):
return False
if not tensor.is_pinned():
#NOTE: Cuda does detect when a tensor is already pinned and would
#error below, but there are proven cases where this also queues an error
#on the GPU async. So dont trust the CUDA API and guard here
ptr = tensor.data_ptr()
size = tensor.numel() * tensor.element_size()
size_stored = PINNED_MEMORY.get(ptr, None)
if size_stored is None:
logging.warning("Tried to unpin tensor not pinned by ComfyUI")
return False
if size != size_stored:
logging.warning("Size of pinned tensor changed")
return False
ptr = tensor.data_ptr()
if torch.cuda.cudart().cudaHostUnregister(ptr) == 0:
TOTAL_PINNED_MEMORY -= PINNED_MEMORY.pop(ptr)
if len(PINNED_MEMORY) == 0: