I hope that this is a simple question:
Which compiler flags should i use to get the best performance out of an AMD Epyc processor (particularly for MPI and OpenMP codes)? I know which instruction sets it is theoretically capable of. But since there were "problems" in the past where the intel compiler would choose slower execution paths for non-intel CPUs and there is this disclaimer, I feel that I should ask an expert first instead of blindly trusting the software to do its best.