| 分蓄洪区洪水演进的并行计算方法研究 |
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| 引用本文： | 崔占峰,张小峰. 分蓄洪区洪水演进的并行计算方法研究[J]. 武汉大学学报(工学版), 2005, 38(5): 24-29 |
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| 作者姓名： | 崔占峰 张小峰 |
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| 作者单位： | 武汉大学水资源与水电工程科学国家重点实验室,湖北,武汉,430072 |
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| 基金项目： | 中国欧盟国际合作ANFAS资助项目 |
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| 摘 要： | 通过网络计算机群,采用信息传递接口(MPI)为通讯库,建立了分蓄洪区洪水演进计算的并行数值模拟方法.以荆江分洪区为对象,模拟计算了实施分洪后洪水的演进过程.计算表明,网络并行计算系统机群的计算速度与计算规模、进程数等因素有关;并行计算相对于单机计算能够提高计算速度,并且加速比及并行效率会随着计算规模的加大而加大;同时,加速比会随着进程数的增加而先增加后减小,存在着一个最优的进程数.
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| 关 键 词： | 并行计算 并行程序 MPI 洪水演进 |
| 文章编号： | 1671-8844(2005)05-024-06 |
| 修稿时间： | 2004-10-21 |
Research on parallel algorithm of flood routing in flood diversion-detention area |
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| CUI Zhan-feng,ZHANG Xiao-feng. Research on parallel algorithm of flood routing in flood diversion-detention area[J]. Engineering Journal of Wuhan University, 2005, 38(5): 24-29 |
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| Authors: | CUI Zhan-feng ZHANG Xiao-feng |
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| Abstract: | A numerical simulation method for parallel algorithm is established to simulate the flood rou-ting in flood diversion-detention area.The message passing interface is applied.As an example,the flood routing in Jingjiang reaches flood diversion-detention area is simulated.The result shows that the speed of workstation cluster is relevant to the computation scale and the process numbers etc..Com-pared with computing in single computer,parallel algorithm can improve computing speed,and the par-allel speed-up rate and efficiency also can increase as the computation scale enlarges.Furthermore,the parallel speed-up rate will be increased firstly and decreased later along with the increase of the process numbers;and an optimum process number can be found. |
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| Keywords: | parallel computing parallel program message passing interface flood routing |
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