2011 Fiscal Year Final Research Report
High Performance Parallel Linear Solver for Peta-scale Simulation
| Project/Area Number |
21680003
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Computer system/Network
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| Research Institution | Kyoto University |
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Principal Investigator |
IWASHITA Takeshi 京都大学, 学術情報メディアセンター, 准教授 (30324685)
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| Project Period (FY) |
2009 – 2011
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| Keywords | ハイパフォーマンスコンピューティング / 線形反復法 |
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| Research Abstract |
The research work for a linear solver for peta-scale simulation has been conducted. A technique to improve convergence for ill-conditioned problems including very large-scale problems and a parallelization technique getting high parallel speedups in the solver have been investigated. An implicit correction multigrid method and EEC/IEC methods were efficiently utilized to deal with the ill-conditioned problem. I and my co-workers have developed a technique which makes it easy to develop various multilevel solvers, and also proposed a convergence acceleration technique in a practical simulation area(computational electromagnetism). In a performance evaluation test for developed solvers, we successfully solved an about 800 million DOF problem by 1024 processor cores in less than 250 s.
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[Journal Article] Convergence Acceleration in Steady State Analysis of Synchronous Machines Using Time-Periodic Explicit Error Correction Method2011
Author(s)
Takeshi Mifune, Soichi Moriguchi, Takeshi Iwashita and Masaaki ShimasakiY. Takahashi, H. Kaimori, A. Kameari, T. Tokumasu, M. Fujita, S. Wakao, T. Iwashita, K. Fujiwara and Y. Ishihara
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Journal Title
IEEE Trans. Magn.
Volume: Vol.47, No.5
Pages: 1422-1425
Peer Reviewed
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