photonsaparallelheterogeneousandthreadsorientedcodeforcosmologicalnbodysimulation

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	photonsaparallelheterogeneousandthreadsorientedcodeforcosmologicalnbodysimulation
	Wang Qiao 2; Cao Zongyan 2; Gao Liang 2; Chi Xuebin 1; Meng Chen 1; Wang Jie 2; Wang Long 1
刊名	researchinastronomyandastrophysics
	2018
卷号	18 期号:6
ISSN号	1674-4527
英文摘要	We introduce a new code for cosmological simulations, PHoToNs, which incorporates features for performing massive cosmological simulations on heterogeneous high performance computer (HPC) systems and threads oriented programming. PHoToNs adopts a hybrid scheme to compute gravitational force, with the conventional Particle-Mesh (PM) algorithm to compute the long-range force, the Tree algorithm to compute the short range force and the direct summation Particle-Particle (PP) algorithm to compute gravity from very close particles. A self-similar space filling a Peano-Hilbert curve is used to decompose the computing domain. Threads programming is advantageously used to more flexibly manage the domain communication, PM calculation and synchronization, as well as Dual Tree Traversal on the CPU+MIC platform. PHoToNs scales well and efficiency of the PP kernel achieves 68.6% of peak performance on MIC and 74.4% on CPU platforms. We also test the accuracy of the code against the much used Gadget-2 in the community and found excellent agreement.
资助项目	[National Key Program for Science and Technology Research and Development] ; [National Natural Science Foundation of China] ; [Royal Society Newton advanced Fellowships]
语种	英语
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/42505]
专题	中国科学院国家天文台
作者单位	1.中国科学院计算机网络信息中心 2.中国科学院国家天文台
推荐引用方式 GB/T 7714	Wang Qiao,Cao Zongyan,Gao Liang,et al. photonsaparallelheterogeneousandthreadsorientedcodeforcosmologicalnbodysimulation[J]. researchinastronomyandastrophysics,2018,18(6).
APA	Wang Qiao.,Cao Zongyan.,Gao Liang.,Chi Xuebin.,Meng Chen.,...&Wang Long.(2018).photonsaparallelheterogeneousandthreadsorientedcodeforcosmologicalnbodysimulation.researchinastronomyandastrophysics,18(6).
MLA	Wang Qiao,et al."photonsaparallelheterogeneousandthreadsorientedcodeforcosmologicalnbodysimulation".researchinastronomyandastrophysics 18.6(2018).