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hw04 submission #20

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hw04 submission #20

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原始版本

Initial energy: -13.414000
Final energy: -13.356842
Time elapsed: 1498 ms

优化1. 添加-ffast-math -march=native 编译选项

Initial energy: -13.413999
Final energy: -13.356841
Time elapsed: 980 ms

优化2. 使用std::sqrt，提取循环不变量

Initial energy: -13.413998
Final energy: -13.356841
Time elapsed: 735 ms

优化3. 使用SOA内存布局，更高效利用缓存

Initial energy: -13.414011
Final energy: -13.403986
Time elapsed: 159 ms

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