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Fix regression in 8bit parameter device movement #1776

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Merged
merged 1 commit into from
Oct 2, 2025
Merged

Fix regression in 8bit parameter device movement #1776

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7 changes: 3 additions & 4 deletions bitsandbytes/nn/modules.py
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Original file line number Diff line number Diff line change
Expand Up @@ -694,11 +694,10 @@ def to(self, *args, **kwargs):
)

# If we had already quantized, move the statistics appropriately.
if is_quantized and device is not None:
if self.CB is not None:
new_param.CB = new_param.data
if is_quantized:
new_param.CB = new_param.data

if self.SCB is not None:
if self.SCB is not None and device is not None:
new_param.SCB = self.SCB.to(device)

return new_param
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