| Budget Amount *help |
¥11,180,000 (Direct Cost: ¥8,600,000、Indirect Cost: ¥2,580,000)
Fiscal Year 2011: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2010: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2009: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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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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