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Consider interactions between vcomp and libomp on Windows with BLIS?

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还没有人认领这个 Issue。

评估

难度
5/5
预计耗时
一周以上
新手友好度
20/100
Issue 类型
缺陷
描述清晰度
需要澄清
活跃度
停滞
技术栈
python

调研方向

The issue describes a possible OpenMP nesting interaction between MSVC-built Cython extensions and BLIS built with Clang/LLVM on Windows, with scipy-blis as a possible path. Start by checking the linked NumPy discussion and how threadpoolctl handles OpenMP runtimes; the issue names no files or tests. Done would require establishing whether this configuration causes a problem and defining the behavior threadpoolctl should support.

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描述

CI enhancement help wanted

Apparently, it's possible to get BLIS to work on windows when built with Clang/LLVM:

https://github.com/numpy/numpy/issues/7372#issuecomment-409364435

Which means that if we have Cython extension built with MSVC calling into BLIS built with Clang/LLVM we will possibly get a new type of OpenMP nesting...

This case would be possible in scikit-learn for the new Cython K-Means calling into the BLAS API scipy-blis, shall scipy use BLIS in the future (which is considered on their roadmap).

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