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Fix xpu to cpu #1570

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Merged
Titus-von-Koeller merged 2 commits into from
Mar 24, 2025
Merged

Fix xpu to cpu #1570

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38a3e34
fix xpu to cpu
jiqing-feng Mar 24, 2025
f30c9d1
fix xpu cpu data device
jiqing-feng Mar 24, 2025
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26 changes: 12 additions & 14 deletions bitsandbytes/nn/modules.py
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Original file line number Diff line number Diff line change
Expand Up @@ -694,32 +694,30 @@ def to(self: T, tensor: Tensor, non_blocking: bool = ...) -> T: ...
def to(self, *args, **kwargs):
device, dtype, non_blocking, convert_to_format = torch._C._nn._parse_to(*args, **kwargs)

if device is not None and device.type in ("cuda", "xpu", "cpu"):
if device is not None:
if device.type == "cuda" and self.data.device.type == "cpu":
return self.cuda(device)
elif device.type == "cpu":
if self.data.dtype == torch.int8:
self.CB = self.data
return self
else:
return self.cpu()
elif device.type == "xpu":
if self.data.dtype == torch.int8:
self.data = self.data.contiguous().xpu(device)
self.data = self.data.contiguous()
self.CB = self.data
return self
else:
if self.data.device.type == "cpu":
return self.xpu(device)
else:
new_param = Int8Params(
super().to(device=device, dtype=dtype, non_blocking=non_blocking),
requires_grad=self.requires_grad,
has_fp16_weights=self.has_fp16_weights,
)
new_param.CB = self.CB
new_param.SCB = self.SCB

return new_param
new_param = Int8Params(
super().to(device=device, dtype=dtype, non_blocking=non_blocking),
requires_grad=self.requires_grad,
has_fp16_weights=self.has_fp16_weights,
)
new_param.CB = self.CB
new_param.SCB = self.SCB

return new_param


def maybe_rearrange_weight(state_dict, prefix, local_metadata, strict, missing_keys, unexpected_keys, error_msgs):
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