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BLD: use BUFFERSIZE=20 in OpenBLAS #17924

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merged 1 commit into from Dec 5, 2020

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@charris charris commented Dec 4, 2020

Backport of #17759.

xref OpenMathLib/OpenBLAS#2970 where it was suggested to compile OpenBLAS with BUFFERSIZE=20 to revert the memory footprint to what it was in OpenBLAS 0.3.9 (we now use 0.3.12). This was done in MacPython/openblas-libs#46, and this PR uses it in NumPy.

xref issue gh-17674, gh-17684 which triggered the discussion.

@charris charris added component: build 08 - Backport Used to tag backport PRs 36 - Build Build related PR labels Dec 4, 2020
@charris charris added this to the 1.19.5 release milestone Dec 4, 2020
@charris charris merged commit eeaf12d into numpy:maintenance/1.19.x Dec 5, 2020
@charris charris deleted the backport-17759 branch December 5, 2020 01:37
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