基于Schur补系统的并行迭代求解器

Proceedings of the ... ICPP Workshops on. International Conference on Parallel Processing Workshops Pub Date : 2001-09-03 DOI:10.1109/ICPPW.2001.951921

G. Larrazábal, J. Cela

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引用次数: 2

摘要

提出了Schur系统的并行迭代求解方法。我们为这个系统开发了两个预调节器。预调节器分别基于强降因子分解和代数多重网格技术。使用PVM和openMP利用了两个级别的并行性。采用一个标量对流扩散方程、一组由有限元软件包PERMAS和Davis集合产生的工业测试用例对预调节器进行了测试。我们得到了准线性加速，直到32个处理器。

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A parallel iterative solver based on the Schur complement system

We present a parallel iterative solver for the Schur system. We have developed two preconditioners for this system. The preconditioners are based in a strongly dropped factorisation and algebraic multigrid technique, respectively. Two levels of parallelism are exploited using PVM and openMP. The preconditioners are tested with a scalar convection-diffusion equation, a set of industrial test cases arising from the finite element package PERMAS and the Davis collection. We have obtained quasi-linear speed-up until 32 processors.

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Proceedings of the ... ICPP Workshops on. International Conference on Parallel Processing Workshops

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