SE param is not used in OSA module

[tkhe]

From OSA stage I noticed that SE param can be changed to False in some cases, e.g. block_per_stage != 1. I guess it means the following OSA module should not include SE module.

vovnet-detectron2/vovnet/vovnet.py

Lines 260 to 265 in f96f534

	if block_per_stage != 1:
	SE = False
	module_name = f"OSA{stage_num}_1"
	self.add_module(
	module_name, _OSA_module(in_ch, stage_ch, concat_ch, layer_per_block, module_name, SE, depthwise=depthwise)
	)

But it seems that the SE param defined in OSA module is never used, so SE module will be applied in every OSA module.

vovnet-detectron2/vovnet/vovnet.py

Lines 186 to 189 in f96f534

	class _OSA_module(nn.Module):
	def __init__(
	self, in_ch, stage_ch, concat_ch, layer_per_block, module_name, SE=False, identity=False, depthwise=False
	):

Is it a bug? or just I misunderstood it?

[gau-nernst]

I notice this also. timm only applies SE in the last block. I didn't see the papers mentioned any of these.

https://github.com/rwightman/pytorch-image-models/blob/07eb2f12005f75be3ed6c2394f3512e7a8ac640a/timm/models/vovnet.py#L244-L256

Have you figured out whether it is a bug?

[gau-nernst]

Seems like SE is only applied to stage 2 and 3, since they have only 1 block? Still, it is pretty strange