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 基于模型减缩的并行共轭梯度算法研究 Alternative Title Model Reduction-Based Parallel Conjugate Gradient Method 聂雪媛; 丁桦 Source Publication 力学季刊 2012-06-25 Volume 33Issue:2Pages:275-280 ISSN 0254-0053 Abstract 有限元并行计算被应用于求解大规模工程问题。为进一步提高计算效率,将模型减缩方法引入到并行计算区域划分步骤中,采用共轭梯度法,推导了适用于分布式并行环境的模型减缩并行算法。该方法在模型减缩的基础上,将边界节点进一步分为"本地节点"和"共享节点",各任务处理器仅交换"共享节点"相关数据,降低了数据交换量,同时仅保存降阶后的区域矩阵,减少了内存存储。编制了MPI并行计算程序,并通过算例对该方法和普通有限元并行方法进行了比较,验证了算法的有效性。 Other Abstract The finite element parallel computation is applied to analysis of large-scale engineering problems.To make further improvement of computation efficiency,the model reduction method was employed in the procedure of parallel computation domain decomposition,then the parallel computation method with conjugate gradient arithmetic was derived for distributed parallel environment.The method divides the boundary nodes of one domain into "local nodes" and "common nodes" and only the data about "common nodes" are exc... Keyword 模型减缩 并行计算 区域划分 共轭梯度法 Subject Area 计算固体力学 URL 查看原文 Indexed By CSCD Language 中文 CSCD ID CSCD:4567536 Department 流固耦合系统力学重点实验室 Citation statistics Document Type 期刊论文 Identifier http://dspace.imech.ac.cn/handle/311007/46481 Collection 流固耦合系统力学重点实验室 Corresponding Author 聂雪媛 Recommended CitationGB/T 7714 聂雪媛,丁桦. 基于模型减缩的并行共轭梯度算法研究[J]. 力学季刊,2012,33(2):275-280. APA 聂雪媛,&丁桦.(2012).基于模型减缩的并行共轭梯度算法研究.力学季刊,33(2),275-280. MLA 聂雪媛,et al."基于模型减缩的并行共轭梯度算法研究".力学季刊 33.2(2012):275-280.
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