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| author | Markus Kowalewski <markus.kowalewski@fysik.su.se> | 2019-04-23 16:00:54 +0200 |
|---|---|---|
| committer | Frederik Rietdijk <freddyrietdijk@fridh.nl> | 2019-04-27 07:07:49 +0200 |
| commit | 6968c4f305680d984ebbfa2953a89547dcf4513c (patch) | |
| tree | 011f614f59e62607066f04755ae0a84297f0a2ae /pkgs/development | |
| parent | cf2f92701063e67b6f89f9602c0690a2ca981be4 (diff) | |
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openblas: turn off AVX512 optimizations
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
Diffstat (limited to 'pkgs/development')
| -rw-r--r-- | pkgs/development/libraries/science/math/openblas/default.nix | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/pkgs/development/libraries/science/math/openblas/default.nix b/pkgs/development/libraries/science/math/openblas/default.nix index 5d0f6794d17..489883e644c 100644 --- a/pkgs/development/libraries/science/math/openblas/default.nix +++ b/pkgs/development/libraries/science/math/openblas/default.nix @@ -58,6 +58,7 @@ let BINARY = 64; TARGET = setTarget "ATHLON"; DYNAMIC_ARCH = true; + NO_AVX512 = true; USE_OPENMP = true; }; }; |