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Feature flags for backend multithreading

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评估

难度
5/5
预计耗时
一周以上
新手友好度
25/100
Issue 类型
功能
描述清晰度
基本清楚
活跃度
停滞
技术栈
rust

调研方向

Review how the openblas-src and intel-mkl-src feature flags are currently exposed, then examine the OpenMP interaction described in the issue. Define the Rust-facing configuration needed to control backend threading and verify that sequential LAPACK execution can coexist with Rust's independent parallel work.

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描述

BLAS/LAPACK backends has multi-threading.

  • openblas-src has openmp flag to enable OpenMP
  • intel-mkl-src has mkl-static-lp64-iomp flag to link the multi-threaded static library

Problems

How to interact with Rust's multi-threading?

We often use multiple threads in Rust-hand to solve independent problems. In this case, LAPACK routines should run in sequential manner because multi-threading of a linear problem is less efficient than trivial parallel. Unfortunatelty, the LAPACK interface does not expose its threading option as argument, and we have to handle them using OpenMP interface e.g. omp_set_num_threads.

主要语言
Rust
星标
452
派生
95
PR 合并指标
30 天内没有已合并 PR

贡献指南

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  3. Fork 仓库,在一个分支上完成修改。
  4. 提交 Pull Request,并在描述里引用这个 Issue 编号。

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