Riga finished hw4! #32

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Riga27527 wants to merge 1 commit into parallel101:main from Riga27527:main

Riga27527 commented Jul 13, 2022

尽力优化了hw4！

优化前：
Initial energy: -13.414000
Final energy: -13.356842
Time elapsed : 2261 ms

优化后：
Initial energy: -13.414016
Final energy: -13.356915
Time elapsed : 263 ms

主要优化点(主要针对step函数)：

结构体 AOS 改成 SOA
sqrt 改成了std::sqrt
常量的运算尽量提出来了
采用-O3 -ffast-math -march=native编译选项(提升最大，此时查看main.S后发现大部分实现了矢量化)
数组采用size_t下标访问


          Riga finished hw4!

224edb0

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