A Proposition of Highly Efficient Parallel Iterative Solvers Suitable for Large Scale Computations of Electromagnetic Wave Scattering from Many Objects
Project/Area Number |
20760058
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Single-year Grants |
Research Field |
Engineering fundamentals
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Research Institution | Kyushu University |
Principal Investigator |
NAKASHIMA Norimasa Kyushu University, 大学院・システム情報科学研究院, 助教 (60380680)
|
Project Period (FY) |
2008 – 2010
|
Project Status |
Completed (Fiscal Year 2010)
|
Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2009: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2008: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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Keywords | シミュレーション工学 / 情報通信工学 / ハイパフォーマンスコンピューティング / 電磁波散乱 / 境界要素法 / 繰り返し解法 / ランダム媒質 / IDR(s)法 / 境界要素解析 |
Research Abstract |
This research proposed 9 modified algorithms for the iterative solver over 30 years ago. Numerical experiments revealed that the speed-up factor of the modified algorithms is more than 5 in conventional boundary element analyses of electromagnetic wave scattering from many objects. Analytical and experimental analyses clarified that the speed-up factor increased with increases in the number of objects and the distance between them. This research also reported superiority of new iterative solvers proposed after 2007 to conventional ones in terms of the net computation time and memory efficiency. Moreover, we provide knowledge for the more than 50 years subject that is the decision of an optimal parameter in the successive overrelaxation method.
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Report
(4 results)
Research Products
(78 results)