Performance of mkl's sgemm about cpu_gemm_opt HOT 3 OPEN

I've tested the 1-thread performance of avx2 SGEMM on i7-9800x (fixed at 3.0 GHz, 4 ch ddr4 2400, mesh 2.4 GHz), which shares the same architecture with Xeon Gold 6142.

Routine..................................Performance(peak)

Your_SGEMM(default_parms)..89-90 GFLOPS

Intel_MKL(2019 update 4)........89-90 GFLOPS (estimated)

OpenBLAS(0.3.8-dev)..................91-92 GFLOPS

Theoretical...................................96 GFLOPS

from cpu_gemm_opt.

@wjc404 thanks for your interest. BTW, what's the MNK parameter of the test above?

from cpu_gemm_opt.

I called gemm_driver without parameters, so it should have used the default parameters optimized on Xeon Gold 6142. The performances listed are peak performances (usually occur at dimensions above 4000). The speed of MKL was tested by a benchmarking program in my repository.

from cpu_gemm_opt.