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openblas: turn off AVX512 optimizations

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The AVX512 optimization has a bug in openblas-0.3.5
and can also lead to slower code on Xeon Silver CPUs.

See https://github.com/xianyi/OpenBLAS/issues/1955
and https://github.com/xianyi/OpenBLAS/issues/2029
This commit is contained in:
Markus Kowalewski 2019-04-23 16:00:54 +02:00 committed by Frederik Rietdijk
parent cf2f927010
commit 6968c4f305
1 changed files with 1 additions and 0 deletions
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pkgs/development/libraries/science/math/openblas/default.nix
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@ -58,6 +58,7 @@ let
BINARY = 64; BINARY = 64;
TARGET = setTarget "ATHLON"; TARGET = setTarget "ATHLON";
DYNAMIC_ARCH = true; DYNAMIC_ARCH = true;
NO_AVX512 = true;
USE_OPENMP = true; USE_OPENMP = true;
}; };
}; };