共享存储环境下二维弹塑性流体动力学程序滑移线的并行计算  

PARALLEL COMPUTING FOR SLIDE LINES PROBLEMS OF 2D ELASTIC PLASTIC HYDRODYNAMICS CODE ON SHARED MEMORY ENVIRONMENT

作　　者：左风丽[1] 莫则尧[1] 张宝琳[1] 

机构地区：[1]北京应用物理与计算数学研究所

出　　处：《数值计算与计算机应用》2002年第4期275-283,共9页Journal on Numerical Methods and Computer Applications

基　　金：国家自然科学基金(69903001);国家973项目(1999032805);中物院重点基金资助

摘　　要：§1.引言 EPHDC-2D程序是一个计算二维弹塑性流体动力学拉氏程序,其空间离散采用四节点的有限元方法,其时间积分采用显式的中心差分格式.程序分为三大部分:导程序、主体计算和网格重分.主体计算又分为滑移线计算和守恒方程的计算.我们已实现守恒方程的并行计算,(见文[5]),本文总结关于滑移线的并行计算.Based on shared memory environment, this paper propose a new classification regroup mapping performance optimization method for parallel computing two-dimensional elastic-plastic hydrodynamics code (EPHDC-2D). Firstly, all slide lines being computed are classified into different species by slide line unit, and the different species of slide lines are independently executed. Then, to support load balance, classification groups reassembled are mapped on multiple processors according to the number of processors given or the size of divided classifications. Numerical experiments have shown that the algorithm can deeply improve the performance over the other schedule strategies.

关 键 词：共享存储环境 二维弹塑性流体动力学 程序 滑移线 并行计算 

分 类 号：O351[理学—流体力学]