计算物理 ›› 1995, Vol. 12 ›› Issue (1): 121-126.

• 论文 • 上一篇    下一篇

改进的2PPJ格式

胡家赣, 刘兴平   

  1. 北京应用物理与计算数学研究所, 计算物理实验室, 北京 100088
  • 收稿日期:1993-09-07 修回日期:1994-03-07 出版日期:1995-03-25 发布日期:1995-03-25
  • 基金资助:
    国家自然科学基金

MODIFIED 2PPJ ALGORITHM

Hu Jiagan, Liu kingping   

  1. Institute of Applied Physics and Computational Mathematics, Laboratoryof Computational Physics, P.O.Box 8009, Beijing 100088
  • Received:1993-09-07 Revised:1994-03-07 Online:1995-03-25 Published:1995-03-25

摘要: 提出了解线性代数方程组的一种方法,称为改进的2PPJ(Modified two parameters parallel Jacobi-type)格式,简记为M2PPJ.讨论了它的收敛性和最优参数的选取.收敛速度比2PPJ格式快一倍以上.给出的数值结果说明本方法的优越性.

关键词: 线性代数方程组, 2PPJ方法, 并行计算, 迭代法

Abstract: A modified two-parameter parallel Jacobi-Type algorithm (M2PPJ) for solving system of linear algebraic equations is proposed. The convergence and the optimum parametes of the method are analysed. The rate of convergence is more than two times as large as that of 2PPJmethod and the extrapolation method of J2P. Numerical examples are given to illustrate these results which indicate the superiority of the present method.

Key words: system of linear algebraic equations, 2PPJ method, parallel computation, iterative method

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