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hw06 done

CPU为6核12线程
os:wsl-ubuntu20


fill,6.69倍,使用parallel_for
saxpy,1.05倍,使用parallel_for,不知道为什么提升很小
sqrtdot,3.78倍,使用parallel_reduce,因为使用并行,精度损失更小,和原答案不一样
minvalue,6.60倍,使用parallel_reduce
magicfilter,1.49倍,按照课程上的优化进行编写
scanner,1.91倍,使用parallel_scan

第一遍上课没完全听懂,后面一边写作业一边听课才明白,感谢小彭老师

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