benchmark

79798c58 - Make the script more robust on supporting unknown devices (#642)

Make the script more robust on supporting unknown devices (#642) Summary: Only do device-check on CPUs. Pull Request resolved: https://github.com/pytorch/benchmark/pull/642 Reviewed By: xuzhao9 Differential Revision: D33072444 Pulled By: alanwaketan fbshipit-source-id: e5cc16bc74658b37341982a8810ccdde26f2cb6e