pytorch

e9a91756 - Back out "[pytorch][PR] Migrate soft_margin_loss from the TH to Aten (CUDA+CPU)"

Back out "[pytorch][PR] Migrate soft_margin_loss from the TH to Aten (CUDA+CPU)" Summary: Original commit changeset: 9ddffe4dbbfa Test Plan: ci Reviewed By: yf225 Differential Revision: D17939581 fbshipit-source-id: 44a3b843bf1e7059fec57b9e3d12ed4886816145