Cosmological neutrino simulations at extreme scale
文献类型：期刊论文
| 作者 | Xing, Zhi-Zhong ; Emberson, J. D.; Yu, Hao-Ran; Inman, Derek; Zhang, Tong-Jie; Pen, Ue-Li; Harnois-Deraps, Joachim; Yuan, Shuo; Teng, Huan-Yu; Zhu, Hong-Ming
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| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS天文和天体物理学研究
 |
| 出版日期 | 2017 |
| 卷号 | 17期号:8页码:85 |
| 关键词 | cosmology: theory large-scale structure of universe methods: numerical |
| ISSN号 | 1674-4527 |
| DOI | 10.1088/1674-4527/17/8/85 |
| 文献子类 | Article |
| 英文摘要 | Constraining neutrino mass remains an elusive challenge in modern physics. Precision measurements are expected from several upcoming cosmological probes of large-scale structure. Achieving this goal relies on an equal level of precision from theoretical predictions of neutrino clustering. Numerical simulations of the non-linear evolution of cold dark matter and neutrinos play a pivotal role in this process. We incorporate neutrinos into the cosmological N-body code CUBEP3M and discuss the challenges associated with pushing to the extreme scales demanded by the neutrino problem. We highlight code optimizations made to exploit modern high performance computing architectures and present a novel method of data compression that reduces the phase-space particle footprint from 24 bytes in single precision to roughly 9 bytes. We scale the neutrino problem to the Tianhe-2 supercomputer and provide details of our production run, named TianNu, which uses 86% of the machine (13 824 compute nodes). With a total of 2.97 trillion particles, TianNu is currently the world's largest cosmological N body simulation and improves upon previous neutrino simulations by two orders of magnitude in scale. We finish with a discussion of the unanticipated computational challenges that were encountered during the TianNu runtime. |
| WOS关键词 | MASSIVE NEUTRINOS ; MATTER ; GALAXIES ; OSCILLATIONS ; SEARCH |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000416068900009 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/284372]  |
| 专题 | 高能物理研究所_理论物理室 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Xing, Zhi-Zhong,Emberson, J. D.,Yu, Hao-Ran,et al. Cosmological neutrino simulations at extreme scale[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS天文和天体物理学研究,2017,17(8):85. |
| APA | Xing, Zhi-Zhong.,Emberson, J. D..,Yu, Hao-Ran.,Inman, Derek.,Zhang, Tong-Jie.,...&邢志忠.(2017).Cosmological neutrino simulations at extreme scale.RESEARCH IN ASTRONOMY AND ASTROPHYSICS天文和天体物理学研究,17(8),85. |
| MLA | Xing, Zhi-Zhong,et al."Cosmological neutrino simulations at extreme scale".RESEARCH IN ASTRONOMY AND ASTROPHYSICS天文和天体物理学研究 17.8(2017):85. |
入库方式： OAI收割
来源：高能物理研究所
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