benchmark

d258f016 - Add DistributedDataParallel Benchmark for Single-GPU, Multi-GPU, and Multi-Machine (#850)

Add DistributedDataParallel Benchmark for Single-GPU, Multi-GPU, and Multi-Machine (#850) Summary: Pull Request resolved: https://github.com/pytorch/benchmark/pull/850 Reviewed By: xuzhao9 Differential Revision: D35993427 Pulled By: mrshenli fbshipit-source-id: a9b08e78421c6745e014ebe91240dc23aad47b35