> When I last checked, MKL was much faster than its competitors That has never been generally true in my experience measuring over the years. It has been true

> When I last checked, MKL was much faster than its competitors That has never been generally true in my experience measuring over the years. It has been true at times for specific cases, e.g. OpenBLAS until it got avx512 support on a par with MKL (at least for serial DGEMM -- I've forgotten quite how the rest of level 3 goes).