scalability studies of an implicit shallow water solver for the rossby-haurwitz problem
文献类型：会议论文
| 作者 | Yang Chao ; Cai Xiao-Chuan |
| 出版日期 | 2011 |
| 会议名称 | 9th International Conference on High Performance Computing for Computational Science, VECPAR 2010 |
| 会议日期 | 22-Jun-02 |
| 会议地点 | Berkeley, CA, United states |
| 关键词 | Computer software selection and evaluation Iterative methods Scalability Spheres Supercomputers |
| 页码 | 172-184 |
| 英文摘要 | The scalability of a fully implicit global shallow water solver is studied in this paper. In the solver a conservative second-order finite volume scheme is used to discretize the shallow water equations on a cubed-sphere mesh which is free of pole-singularities. Instead of using the popular explicit or semi-implicit methods in climate modeling, we employ a fully implicit method so that the restrictions on the time step size can be greatly relaxed. Newton-Krylov-Schwarz method is then used to solve the nonlinear system of equations at each time step. Within each Newton iteration, the linear Jacobian system is solved by using a Krylov subspace method preconditioned with a Schwarz method. To further improve the scalability of the algorithm, we use multilevel hybrid Schwarz preconditioner to suppress the increase of the iteration number as the mesh is refined or more processors are used. We show by numerical experiments on the Rossby-Haurwitz problem that the fully implicit solver scales well to thousands of processors on an IBM BlueGene/L supercomputer. © 2011 Springer-Verlag Berlin Heidelberg. |
| 会议主办者 | Allinea Software; Meyer Sound Laboratories Inc.; ParaTools Inc.; Lawrence National Berkeley Laboratory; Universidade do Porto |
| 会议录 | Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
 |
| 会议录出版地 | Germany |
| ISSN号 | 3029743 |
| ISBN号 | 9783642193279 |
| 源URL | [http://124.16.136.157/handle/311060/14237]  |
| 专题 | 软件研究所_并行计算实验室 _会议论文 |
| 推荐引用方式 GB/T 7714 | Yang Chao,Cai Xiao-Chuan. scalability studies of an implicit shallow water solver for the rossby-haurwitz problem[C]. 见:9th International Conference on High Performance Computing for Computational Science, VECPAR 2010. Berkeley, CA, United states. 22-Jun-02. |
入库方式： OAI收割
来源：软件研究所
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