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Bias backup #7

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merged 3 commits into from
May 16, 2024
Merged

Bias backup #7

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ddb28b3
Merge branch 'master' into dev
AUTOMATIC1111 Apr 22, 2024
51b13a8
Prevent uncessary bias backup
huchenlei May 16, 2024
b2ae449
Fix LoRA bias error
huchenlei May 16, 2024
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7 changes: 6 additions & 1 deletion extensions-builtin/Lora/networks.py
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Original file line number Diff line number Diff line change
Expand Up @@ -378,13 +378,18 @@ def network_apply_weights(self: Union[torch.nn.Conv2d, torch.nn.Linear, torch.nn
self.network_weights_backup = weights_backup

bias_backup = getattr(self, "network_bias_backup", None)
if bias_backup is None:
if bias_backup is None and wanted_names != ():
if isinstance(self, torch.nn.MultiheadAttention) and self.out_proj.bias is not None:
bias_backup = self.out_proj.bias.to(devices.cpu, copy=True)
elif getattr(self, 'bias', None) is not None:
bias_backup = self.bias.to(devices.cpu, copy=True)
else:
bias_backup = None

# Unlike weight which always has value, some modules don't have bias.
# Only report if bias is not None and current bias are not unchanged.
if bias_backup is not None and current_names != ():
raise RuntimeError("no backup bias found and current bias are not unchanged")
self.network_bias_backup = bias_backup

if current_names != wanted_names:
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