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Kushida, Noriyuki; Fujibayashi, Kenichi; Takemiya, Hiroshi
Procedia Computer Science, 4, p.898 - 907, 2011/00
Times Cited Count：0 Percentile：0(Computer Science, Theory & Methods)A high speed eigenvalue solver that is an essential part of a plasma stability analysis system for fusion reactors on a Cell cluster system is described. For the purpose of continuous operation of fusion reactors, we must evaluate the state of plasma within the characteristic confinement time of the plasma density and temperature in fusion reactors. In order to resolve the problem, we introduced a Cell cluster system and developed a novel eigenvalue solver, which usually consumes most of the plasma evaluation time, to achieve high performance of the system. As a result, we succeeded in obtaining our target performance: we were able to solve a block tri-diagonal Hermitian matrix containing 1024 diagonal blocks, where the size of each block was 128
128, within a second. Therefore, we have found a suitable candidate for achieving a satisfactory monitoring system.
Tatekawa, Takayuki; Kushida, Noriyuki; Miyamura, Hiroko; Teshima, Naoya*; Fujibayashi, Kenichi*; Takemiya, Hiroshi
no journal, ,
no abstracts in English
Kushida, Noriyuki; Fujibayashi, Kenichi; Kureta, Masatoshi; Segawa, Mariko; Shinohara, Takenao; Takemiya, Hiroshi
no journal, ,
Center for Computational Science and E-systems of Japan Atomic Energy Agency has been developing elemental technologies for high-speed data analysis in order to achieve "On Site" data analysis. Recent huge experimental facilities provide tremendous amount of data, which is beyond traditional computers capability. Therefore we developed and applied novel parallel computing techniques. As a result, we achieved around 100 times speed-up in computation, and 10 times speed-up in data storage access than traditional computers.
