Comment Comment by microtonal I think MKL actually fixed Zen performance. That is, the workaround no longer makes any difference because it is no longer needed.Odd. I am trying on my 3700X and it is definitely not using AVX, FMA or AVX2 code paths. Intel MKL 2020 update 2: ldd ~/git/sticker2/target/release/sticker2 | grep mkl_intel libmkl_intel_lp64.so => /nix/store/jpjwkkv1dqk4nn8swjzr5qqzp0dpzk2f-mkl-2020.2.254/lib/libmkl_intel_lp64.so (0x00007fe786862000) I checked the instructions in with perf and it is using an SSE code path. Also, as reported elsewhere, MKL_DEBUG_CPU_TYPE=5 does not enable AVX2 support as it used to do. parent microtonal 6 years ago
Odd. I am trying on my 3700X and it is definitely not using AVX, FMA or AVX2 code paths. Intel MKL 2020 update 2:
I checked the instructions in with perf and it is using an SSE code path. Also, as reported elsewhere, MKL_DEBUG_CPU_TYPE=5 does not enable AVX2 support as it used to do.