benchmark

bf51bcff - Fix issues encountered when running models with lazy tensors (#697)

Fix issues encountered when running models with lazy tensors (#697) Summary: Also addresses niter inconsistency https://github.com/pytorch/benchmark/issues/687 Pull Request resolved: https://github.com/pytorch/benchmark/pull/697 Reviewed By: xuzhao9 Differential Revision: D33660895 Pulled By: wconstab fbshipit-source-id: d9dedbb5b51be016bf7144658168adfa90e485fe