To fix MKL for AMD Rome/Zen2 just do "export MKL_DEBUG_CPU_TYPE=5" This helps quite a bit with Matlab (which uses MKL) as well. For Blas/Lapack like librarie

To fix MKL for AMD Rome/Zen2 just do "export MKL_DEBUG_CPU_TYPE=5" This helps quite a bit with Matlab (which uses MKL) as well. For Blas/Lapack like libraries look for Blis and libFLAME. Gcc-9.2.0 isn't bad, but if you want Zen2/Rome/Ryzen 3xxx optimizations I'd recommend AMD's AOCC, which is a tuned version of LLVM (including c, c++, and fortran). If you need FFTs look at amd-fftw. Basic low level math (pow, log, exp, exp2 and friends) library look at the "AMD Math library (libM).