[Question][Background_Matting] Unused intermediate result multi_feat.

[BowenBao]

Observe multi_feat is unused and not returned. Should it be removed or is it a bug in the implementation?

benchmark/torchbenchmark/models/Background_Matting/networks.py

Lines 97 to 111 in 2ea018e

	multi_feat=self.model_enc_multi(multi)
	oth_feat=torch.cat([self.comb_back(torch.cat([img_feat,back_feat],dim=1)),self.comb_seg(torch.cat([img_feat,seg_feat],dim=1)),self.comb_multi(torch.cat([img_feat,back_feat],dim=1))],dim=1)
	out_dec=self.model_res_dec(torch.cat([img_feat,oth_feat],dim=1))
	out_dec_al=self.model_res_dec_al(out_dec)
	al_out=self.model_al_out(out_dec_al)
	out_dec_fg=self.model_res_dec_fg(out_dec)
	out_dec_fg1=self.model_dec_fg1(out_dec_fg)
	fg_out=self.model_fg_out(torch.cat([out_dec_fg1,img_feat1],dim=1))
	return al_out, fg_out

[xuzhao9]

This issue is from the upstream model code: https://github.com/senguptaumd/Background-Matting/blob/master/networks.py#L97

We prefer to keep the same code as the upstream code, to make sure we are improving together with the PyTorch ecosystem.
That being said, we are open to fix it, if you create a PR in the upstream repo, and reference to the upstream PR in the pytorch/benchmark PR.