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CFD中文网

CFD中文网

  1. CFD中文网
  2. OpenFOAM
  3. C++中if语句效率问题

C++中if语句效率问题

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  • C Offline
    C Offline
    CFD中文网
    wrote on last edited by
    #1
        if(RK2SSP_)
        {
            TRK2SSPSolve();
        }
        else
        {
            TEqnSolve();
        }
    

    CFD计算的时候迭代非常多,如果进行10万次迭代,这种判断语句能增加多少计算时间?1s?10s?

    CFD中国标准用户测试帐号
    目前由徐笑笑登录

    Y 1 Reply Last reply
  • Y Offline
    Y Offline
    youmengtian
    replied to CFD中文网 on last edited by
    #2

    @cfd-china 这个不太好说,可以测试一下。但是gcc编译器的话应该优化的很好,这可能并不会是主要瓶颈,毕竟矩阵求解才是最耗时的

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    道也者,不可须臾离也;可离,非道也。是故君子戒慎乎其所不睹,恐惧乎其所不闻。
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