Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Small Patch SwinTransformer for FX compatibility #6252

Merged
merged 1 commit into from
Jul 8, 2022
Merged

Small Patch SwinTransformer for FX compatibility #6252

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
12 changes: 10 additions & 2 deletions torchvision/models/swin_transformer.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -25,6 +25,15 @@
]


def _patch_merging_pad(x):
H, W, _ = x.shape[-3:]
x = F.pad(x, (0, 0, 0, W % 2, 0, H % 2))
return x


torch.fx.wrap("_patch_merging_pad")


class PatchMerging(nn.Module):
"""Patch Merging Layer.
Args:
Expand All @@ -46,8 +55,7 @@ def forward(self, x: Tensor):
Returns:
Tensor with layout of [..., H/2, W/2, 2*C]
"""
H, W, _ = x.shape[-3:]
x = F.pad(x, (0, 0, 0, W % 2, 0, H % 2))
x = _patch_merging_pad(x)

x0 = x[..., 0::2, 0::2, :] # ... H/2 W/2 C
x1 = x[..., 1::2, 0::2, :] # ... H/2 W/2 C
Expand Down