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平台:WSL2 of Ubuntu20.04, CPU 8核 16线程
使用TBB库进行修改:
fill与saxpy使用parallel_for并行化;sqrtdot与minvalue使用parallel_reduce并行化;magicfilter使用 slides 里的推荐方法,即对res与临时vector预留空间,并对res加锁;scanner使用parallel_scan。用时对比:
一个比较好阅读理解的文档。