benchmark

827f90b9 - changed to proper Xavier initialization, existing implementation was … (#1927)

changed to proper Xavier initialization, existing implementation was … (#1927) Summary: …resulting in a large negative bias, which was killing all gradients through the following relu. https://paperswithcode.com/method/xavier-initialization Pull Request resolved: https://github.com/pytorch/benchmark/pull/1927 Reviewed By: davidberard98 Differential Revision: D49754019 Pulled By: xuzhao9 fbshipit-source-id: 436676afed9bcc0f464cd1b25465444a98a52b5a