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BLD: use smaller scipy-openblas builds #27147

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Merged
merged 2 commits into from
Aug 9, 2024
Merged

BLD: use smaller scipy-openblas builds #27147

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BLD: use smaller scipy-openblas builds
mattip Aug 8, 2024
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add release note
mattip Aug 8, 2024
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8 changes: 8 additions & 0 deletions 8 doc/release/upcoming_changes/27147.performance.rst
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* OpenBLAS on x86_64 and i686 is built with fewer kernels. Based on
benchmarking, there are 5 clusters of performance around these kernels:
``PRESCOTT NEHALEM SANDYBRIDGE HASWELL SKYLAKEX``.

* OpenBLAS on windows is linked without quadmath, simplfying licensing

* Due to a regression in OpenBLAS on windows, the performance improvements
when using multiple threads for OpenBLAS 0.3.26 were reverted.
2 changes: 1 addition & 1 deletion 2 requirements/ci32_requirements.txt
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# Keep this in sync with ci_requirements.txt
scipy-openblas32==0.3.27.44.4
scipy-openblas32==0.3.27.44.5
4 changes: 2 additions & 2 deletions 4 requirements/ci_requirements.txt
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# Keep this in sync with ci32_requirements.txt
scipy-openblas32==0.3.27.44.4
scipy-openblas64==0.3.27.44.4
scipy-openblas32==0.3.27.44.5
scipy-openblas64==0.3.27.44.5
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