摘要： 总结利用存储层级结构加速计算流体力学程序的研究现状，通过对现代CPU高速缓存(Cache)的结构分析，研究Cache友好方法对程序运算速度的影响。使用2种基于Cache友好的优化方法对FORTRAN编写的三维多区计算机流铨力学(CFD)计算代码进行优化，给出对三维LU-SGS的详细优化算法。在3种计算平台上的数值实验结果表明，优化后程序运行时间能减少到优化前的20%~50%。

关键词: 高速缓存, 计算流体力学, 代码优化

Abstract: This paper summarizes the overseas research situation of accelerating Computational Fluid Dynamics(CFD) codes using memory hierarchy techniques. The influence of Cache-friendly method on code efficiency is studied by means of analysis of modern CPU Cache structure. Three dimensional multi-block CFD FORTRAN code is optimized by two methods based on Cache-friendly method. A 3D optimized LU-SGS algorithm is presented. The numerical experiments executed in three kinds of microprocessors indicate that the running time of optimized code is from 20 percent to 50 percent of the original code.

Key words: Cache, Computational Fluid Dynamics(CFD), code optimization

中图分类号: 

• TP391