benchmark

f28c72d8 - Only check the internal userbenchmarks when the directory exists (#1290)

Only check the internal userbenchmarks when the directory exists (#1290) Summary: Pull Request resolved: https://github.com/pytorch/benchmark/pull/1290 Reviewed By: FindHao Differential Revision: D41139475 Pulled By: xuzhao9 fbshipit-source-id: ff553c193f0c570e2ae92777183a7d233e579a95