岩土力学Issue(8)：2401-2407,7.
基于OpenMP的非连续变形分析并行计算方法
Parallel computing method for discontinuous deformation analysis using OpenMP
摘要
Abstract
The discontinuous deformation analysis (DDA) strictly meets balance requirements and energy conservation, and has complete kinematics and numerical reliability. However, the computation time of simulating large-scale geotechnical engineering is too long, especially for solving linear equations;the parallel computing will be a good solution to the problem. Firstly, two contents of non-zero storage in DDA have been described. One is the block compressed sparse row method, and the other is the iterative scheme of non-zero position recording based on the trial-error. Furthermore, we have introduced the block Jacobi iterative method to parallel solving linear equations of DDA, and improved the non-zero storage method. Finally, benefit from the sub-matrices storing, parallel computing of the DDA has been achieved based on Opening Multi-Processing. The improved DDA program has been used to simulate the failure process of the underground caverns; the speedup is obtained to evaluate the parallel efficiency. The results demonstrate that the parallel computing strategy can greatly improve the computational efficiency of DDA for the problems with various sizes. The investigations of this paper will promote DDA to the engineering simulation.关键词
岩土工程/非连续变形分析/并行计算/OpenMP/块雅可比迭代法/非零存储Key words
geotechnical engineering/discontinuous deformation analysis/parallel computing/OpenMP/block Jacobi iterative method/non-zero element memory分类
建筑与水利引用本文复制引用
付晓东,盛谦,张勇慧..基于OpenMP的非连续变形分析并行计算方法[J].岩土力学,2014,(8):2401-2407,7.基金项目
国家自然科学基金资助项目（No.11272331）资助；国家自然科学基金重大研究计划集成项目（No.91215301）。 （）
