1037 超伝導状態大規模並列計算におけるテラフロップス級シミュレーションの現状

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This paper reports current status of parallel computer simulations for superconducting state dynamics on the Earth Simulator. The simulated subjects are divided into three themes as follows, 1) preliminary simulations for neutron detecting devices using MgB_2 superconductor, 2) fundamental simulations for studying effects of thermal fluctuation and magnetic field on the stability of superconductivity, and 3) test simulations for novel devices proposed by making matrices composed of various superconductors with different symmetries. The equations employed commonly in the three themes are the time-dependent Ginzburg-Landau equation, the Maxwell equation, and the thermal diffusion equation, and the matrix diagonalization is also performed to study full quantum features for the themes 2) and 3). Now, we have developed two codes for solving the three equations and excuting the matrix diagonalization, respectively. On the Earth Simulator, the former code show a performance exceeding 18Tela-flops at the maximum, while the latter code succeeded to obtain an eigenvalue of a matrix with 180 million dimension.
一般社団法人日本機械学会の論文
2003-11-22