GOTHIC: Gravitational oct-tree code accelerated by hierarchical time step controlling

详细信息    查看全文

• 作者：Yohei Miki ; ^a ; ^b ; ^{ymiki@ccs.tsukuba.ac.jp} ; Masayuki Umemura^a ; ^b
• 关键词：N-body simulation ; Tree code ; Block time step ; GPU computing
• 刊名：New Astronomy
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：52
• 期：Complete
• 页码：65-81
• 全文大小：1956 K
• 卷排序：52

文摘

We present a new gravitational octree code on GPU that adopts a block time step. It uses adaptive optimizations by monitoring the execution time of each function. The code achieves a 3–5 fold acceleration compared to the shared time step method. The averaged performance of the code is 10–30% of the theoretical peak performance.