摘要
针对基于PVM的桌面PC机联网而成的网络并行计算环境中,处理机的运算速度较快而处理机间的通信相对较慢,以及微机的内存有限的实际情况,从实用的角度出发,给出了基于PVM的网上求解有限元方程组的并行m-Step Jacob i PCG方法,该算法的矩阵和向量采用行元素相邻单元贡献法实现有限元总体刚度矩阵和荷载向量的并行计算与组装,分块储存在各处理机上,其处理机间通信较少。并在1-4台桌面PC机连接成的局域网,PVM3.4 on W indow2000,VC 6.0并行计算平台上编程对该算法进行了数值试验,得到了较理想的结果。
Aiming at situation of the higher speed of processors operation while the relative lower speed of communication among them in the net parallel computing environment based on PVM system and the limited memory of the computers, a parallel algorithm of m - step Jacobi PCG method for computing finite element equation on LAN based on PVM system is presented from the practice angle in this paper , in which matrix and vector use parallel computation and parallel assembly of total stiffness matrix and total load vector of the finite element are realized by row element unit contribution method. Then, matrix and vector are distributed among local memories of all processors through row - block, and the communication among processors is less . Finally, the numerical experiment performed on LAN composed of 1 - 4 personal computers with PVM on Windows 2000 ＆ VC6.0 is given and th right computational results are got,
出处
《贵州师范大学学报（自然科学版）》
CAS
2007年第1期77-80,共4页
Journal of Guizhou Normal University：Natural Sciences
