Performance Evaluation of OhHelp'ed 3D Particle-in-Cell Simulation

• Item type: SIG Technical Reports(1)
• 公開日: 2009-02-19
• タイトル: Performance Evaluation of OhHelp'ed 3D Particle-in-Cell Simulation
• タイトル / 言語: en
• タイトル: Performance Evaluation of OhHelp'ed 3D Particle-in-Cell Simulation
• 言語: jpn
• 資源タイプ / 資源タイプ識別子: http://purl.org/coar/resource_type/c_18gh
• 資源タイプ: technical report
• 著者所属: ACCMS, Kyoto University
• 著者所属: RISH, Kyoto University
• 著者所属: RISH, Kyoto University
• 著者所属: RISH, Kyoto University
• 著者所属(英): en
• 著者所属(英): ACCMS, Kyoto University
• 著者所属(英): en
• 著者所属(英): RISH, Kyoto University
• 著者所属(英): en
• 著者所属(英): RISH, Kyoto University
• 著者所属(英): en
• 著者所属(英): RISH, Kyoto University
• 著者名: Hiroshi, Nakashima; Yohei, Miyake; Hideyuki, Usui; Yoshiharu, Omura
• 著者名(英): Hiroshi, Nakashima; Yohei, Miyake; Hideyuki, Usui; Yoshiharu, Omura
• 論文抄録 / 内容記述タイプ: Other
• 論文抄録 / 内容記述: We proposed an efficient and scalable load balancing method named OhHelp for Particle-in-Cell (PIC) simulations. This method simply and equally partitions the space domain, in which charged particles are distributed nonuniformly in general, so that each computation node works on each partitioned primary subdomain. Load imbalance problem caused by the nonuniformity of the particle distribution is solved by making every but one node also work on another subdomain where particles densely populate as its secondary subdomain together with a part of particles in it. We applied the OhHelp method to a production level full-3D PIC simulator for space plasma and evaluated its performance on our T2K Open Supercomputer. As a result, we confirmed our simulator is not only efficient showing 150--190 speedup with 256 CPU cores compared to the sequential execution of a reference simulator, but also scalable in terms of both the space domain size and the number of particles as the break down of execution times evidences.
• 論文抄録(英) / 内容記述タイプ: Other
• 論文抄録(英) / 内容記述: We proposed an efficient and scalable load balancing method named OhHelp for Particle-in-Cell (PIC) simulations. This method simply and equally partitions the space domain, in which charged particles are distributed nonuniformly in general, so that each computation node works on each partitioned primary subdomain. Load imbalance problem caused by the nonuniformity of the particle distribution is solved by making every but one node also work on another subdomain where particles densely populate as its secondary subdomain together with a part of particles in it. We applied the OhHelp method to a production level full-3D PIC simulator for space plasma and evaluated its performance on our T2K Open Supercomputer. As a result, we confirmed our simulator is not only efficient showing 150--190 speedup with 256 CPU cores compared to the sequential execution of a reference simulator, but also scalable in terms of both the space domain size and the number of particles as the break down of execution times evidences.
• 書誌レコードID / 収録物識別子タイプ: NCID
• 書誌レコードID / 収録物識別子: AN10463942
• 書誌情報: 研究報告ハイパフォーマンスコンピューティング（HPC）; 巻 2009, 号 14(2009-HPC-119), p. 1-6, 発行日 2009-02-19
• Notice: SIG Technical Reports are nonrefereed and hence may later appear in any journals, conferences, symposia, etc.
• 出版者 / 言語: ja
• 出版者: 情報処理学会