三维多子区激光推进数值模拟的并行设计与分析  

Parallel Design and Analysis of Numerical Simulation for Laser Propulsion of Three Dimensions and Multi-sub Domain

作　　者：曾瑶源[1] 赵文涛[1] 张理论[1] 赵军[1] 李倩[2] 

机构地区：[1]国防科技大学计算机学院,长沙410073 [2]装备指挥技术学院,北京101416

出　　处：《科学技术与工程》2009年第4期845-851,共7页Science Technology and Engineering

基　　金：国家“九七三”项目(61328);国家自然科学基金项目(40505023)资助

摘　　要：针对三维多子区激光推进并行数值模拟问题,基于按子区独立进行区域分解策略,引入物理网格点负载权重,实现了负载平衡。通过提高Cache命中率、优化消息传递、并行写文件等措施,使设计实现了所研究问题的并行化。并在某国产巨型机上对不同算例进行了测试。当并行度为16时,最低加速比高于8.96,实现了采用并行计算加快激光推进机理研究的目的。As to the problem of parallel numerical simulation for laser propulsion of three dimensions and multisub domain in China, grid point weighted load is introduced, realized load balancing, based on the policy of sub domain decomposition independently, achieving parallelization of the problem analyzing, through measures of improving cache hit rate, optimizing message passing, writing in parallel files, etc. When testing different examples on one home made supercomputer, sion mechanism, on condition that than 8.96. the purpose is realized by adopting parallel when the degree of parallelism is 16, the computing to accelerate laser propulsmallest number of speedup is more

关 键 词：多子区 激光推进 耦合计算 区域分解 负载平衡 并行I/O 

分 类 号：O246[理学—计算数学] TP311.1[理学—数学]