benchmark

036012ff - adding fp32 strict and tf32x3 benchmarks for gemm

adding fp32 strict and tf32x3 benchmarks for gemm Summary: TSIA draft diff while I move this to its own op Reviewed By: danzimm Differential Revision: D64781204 fbshipit-source-id: c3ddd956230c1e4c8166867f03b5a28e8d6586e9