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[bugfix] Cherrypick resnet norm init bugfix #6085

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Merged
merged 1 commit into from
May 25, 2022
Merged

[bugfix] Cherrypick resnet norm init bugfix #6085

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4 changes: 2 additions & 2 deletions torchvision/models/resnet.py
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Original file line number Diff line number Diff line change
Expand Up @@ -217,9 +217,9 @@ def __init__(
# This improves the model by 0.2~0.3% according to https://arxiv.org/abs/1706.02677
if zero_init_residual:
for m in self.modules():
if isinstance(m, Bottleneck):
if isinstance(m, Bottleneck) and m.bn3.weight is not None:
nn.init.constant_(m.bn3.weight, 0) # type: ignore[arg-type]
elif isinstance(m, BasicBlock):
elif isinstance(m, BasicBlock) and m.bn2.weight is not None:
nn.init.constant_(m.bn2.weight, 0) # type: ignore[arg-type]

def _make_layer(
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