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题名: NBODY6++GPU: ready for the gravitational million-body problem
作者: Wang, L;  Spurzem, R;  Aarseth, S;  Nitadori, K;  Berczik, P;  Kouwenhoven, MBN;  Naab, T
刊名: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期: 2015
卷号: 450, 期号:4, 页码:4070-4080
关键词: methods: numerical ;  globular clusters: general
学科分类: Astronomy & Astrophysics
DOI: http://dx.doi.org/10.1093/mnras/stv817
通讯作者: Wang, L (reprint author), Peking Univ, Kavli Inst Astron & Astrophys, Yiheyuan Lu 5, Beijing 100871, Peoples R China.
文章类型: Article
英文摘要: Accurate direct N-body simulations help to obtain detailed information about the dynamical evolution of star clusters. They also enable comparisons with analytical models and Fokker-Planck or Monte Carlo methods. NBODY6 is a well-known direct N-body code for star clusters, and NBODY6++ is the extended version designed for large particle number simulations by supercomputers. We present NBODY6++ GPU, an optimized version of NBODY6++ with hybrid parallelization methods (MPI, GPU, OpenMP, and AVX/SSE) to accelerate large direct N-body simulations, and in particular to solve the million-body problem. We discuss the new features of the NBODY6++ GPU code, benchmarks, as well as the first results from a simulation of a realistic globular cluster initially containing a million particles. For million-body simulations, NBODY6++ GPU is 400-2000 times faster than NBODY6 with 320 CPU cores and 32 NVIDIA K20X GPUs. With this computing cluster specification, the simulations of million-body globular clusters including 5 per cent primordial binaries require about an hour per half-mass crossing time.
类目[WOS]: Astronomy & Astrophysics
关键词[WOS]: SPECIAL-PURPOSE COMPUTER ;  GRAPHICS PROCESSING UNITS ;  PERFORMANCE ANALYSIS ;  GLOBULAR-CLUSTERS ;  CORE-COLLAPSE ;  SIMULATIONS ;  REGULARIZATION ;  IMPLEMENTATION ;  ALGORITHMS ;  GRAPE-6
收录类别: SCI
项目资助者: National Natural Science Foundation of China [11073025, 11010237, 11050110414, 11173004] ;  Silk Road Project at National Astronomical Observatories of China (NAOC) ;  Chinese Academy of Sciences, at NAOC [2009S1-5] ;  'Qianren' special foreign experts programme of China, at NAOC ;  Volkswagen Foundation ;  Julich Supercomputing Center (JSC) ;  NASU under the Main Astronomical Observatory GRID/GPU computing cluster project ;  Peter and Patricia Gruber Foundation through the PPGF fellowship ;  Peking University One Hundred Talent Fund [985] ;  John Templeton Foundation ;  NAOC ;  DFG cluster of excellence 'Origin and Structure of the Universe'
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/20928
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Recommended Citation:
Wang, L,Spurzem, R,Aarseth, S,et al. NBODY6++GPU: ready for the gravitational million-body problem[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2015,450(4):4070-4080.
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