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fix(group_offloading): support Ascend NPU stream when available #14785

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fix(group_offloading): support Ascend NPU stream when available #14785

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6 changes: 5 additions & 1 deletion src/diffusers/hooks/group_offloading.py
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Original file line number Diff line number Diff line change
Expand Up @@ -675,8 +675,12 @@ def apply_group_offloading(
stream = torch.cuda.Stream()
elif hasattr(torch, "xpu") and torch.xpu.is_available():
stream = torch.Stream()
elif hasattr(torch, "npu") and torch.npu.is_available():
stream = torch.npu.Stream()
else:
raise ValueError("Using streams for data transfer requires a CUDA device, or an Intel XPU device.")
raise ValueError(
"Using streams for data transfer requires a CUDA device, an Intel XPU device, or an Ascend NPU device."
)

if not use_stream and record_stream:
raise ValueError("`record_stream` cannot be True when `use_stream=False`.")
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