[M-GI32] [JJ] 計算科学による惑星形成・進化・環境変動研究の新展開

[MGI32-04] Pezy-SC プロセッサを用いた大規模N体計算

*佐々木 貴教¹、細野 七月² (1.京都大学 大学院理学研究科 宇宙物理学教室、2.京都大学 大学院総合生存学館)

キーワード：N体計算、月形成、Pezy-SC

We developed an N-body simulation code on multiple Pezy-SC processors−Pezy-SC processor is a novel new architecture developed by Pezy Computing K. K. that has achieved large computational power with low electric power consumption. We adopt the rubble pile model for physical collisions, in which no mergers are allowed, and use FDPS (Framework for Developing Particle Simulator) to solve the self-gravity. We performed several sets of high- and extra-high-resolution N body simulations of the lunar accretion from a circumterrestrial disk of debris generated by a giant impact on Earth. The number of particles is up to 1 million, in which 1 particle corresponds to a 30 km-size satellitesimal. We show the performance and capability of our numerical code for high-resolution N-body simulations of planet/moon/ring formation.