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photonsaparallelheterogeneousandthreadsorientedcodeforcosmologicalnbodysimulation
Wang Qiao1; Cao Zongyan1; Gao Liang1; Chi Xuebin2; Meng Chen2; Wang Jie1; Wang Long2
2018
Source Publicationresearchinastronomyandastrophysics
ISSN1674-4527
Volume18Issue:6
AbstractWe 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.
Language英语
Funding Project[National Key Program for Science and Technology Research and Development] ; [National Natural Science Foundation of China] ; [Royal Society Newton advanced Fellowships]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/42506
Collection中国科学院国家天文台
Affiliation1.中国科学院国家天文台
2.中国科学院计算机网络信息中心
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
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).
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