An Interface Strip Preconditioner for Domain Decomposition Methods: Application to Hydrology
In this paper, the efficiency of a parallelizable preconditioner for domain decomposition methodsin the context of the solution of non-symmetric linear equations arising from discretization of the Saint-Venant equations, is investigated. The proposed interface strip preconditioner (IS) is based on s...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2005 |
| País: | Argentina |
| Institución: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/26622 |
| Acceso en línea: | http://hdl.handle.net/11336/26622 |
| Access Level: | acceso abierto |
| Palabra clave: | Domain Decomposition Methods Parallel Computing Finite Element Method |
| Sumario: | In this paper, the efficiency of a parallelizable preconditioner for domain decomposition methodsin the context of the solution of non-symmetric linear equations arising from discretization of the Saint-Venant equations, is investigated. The proposed interface strip preconditioner (IS) is based on solving a problem in a narrow strip around the interface. It requires much less memory and computing time than classical Neumann–Neumann preconditioner, and handles correctly the flux splitting among sub-domains that share the interface. The performance of this preconditioner is assessed with an analytical study of Schur complement matrix eigenvalues and numerical experiments conducted in a parallel computational environment (consisting of a Beowulf cluster of 20 nodes). |
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