The benchmark binary support multiple batches in one run (#15443)
Summary:
It is sometimes beneficial to run multiple batches in one benchmark and check the aggregated results.
This PR enables this functionality.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/15443
Reviewed By: llyfacebook
Differential Revision: D13531129
Pulled By: sf-wind
fbshipit-source-id: 553a762a5cbadf5a3d9fd6af767ae34899bc1aa2
