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A multi-GPU finite volume solver for magnetohydrodynamics-based solar wind simulations
Wang, Yuan1,2; Feng, Xueshang1; Zhou, Yufen1; Gan, Xinbiao3
Department空间科学部
Source PublicationComputer Physics Communications
2018
DOI10.1016/j.cpc.2018.12.003
ISSN0010-4655
Language英语
AbstractMagnetohydrodynamic (MHD) simulations in the domain of spherical shell are a crucial and challenging subject in many fields such as geophysics and solar-terrestrial physics, due to the complication of the MHD equations and the specificity of the domain. Besides, due to the real-time requirement, accelerating the heavy computation is proposed in many practical problems, of which the space weather simulation and forecast from the Sun to Earth is a typical case. Considering these factors, we first develop a new, spatially second-order accurate finite volume (FV) solver for three-dimensional (3D) MHD simulations with the multiple time steps strategy, which is based on the six-component grid for spherical shell domain. Then to speed up the simulation, we implement the solver on multiple GPUs with optimizations of CUDA and establish an effective multi-GPU FV solver on the spherical shell domain. A MHD manufactured solution is used to validate the solvers’ spatial accuracy, and to measure their performances. Results show that both solvers have nice scalability, and speedup ratios of 27.7x to 30.06x are obtained on GPUs. Then we utilize them to study the ambient solar wind for Carrington rotation (CR) 2060. The multi-GPU FV solver can not only obtain speedup ratios of about 29.0x, but capture main features of the solar corona and the mapped in-situ solar wind measurements. © 2018
Indexed ByEI
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Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/6675
Collection空间科学部
Affiliation1.SIGMA Weather Group, State Key Laboratory for Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing; 100190, China;
2.College of Earth Sciences, University of Chinese Academy of Sciences, Beijing; 100049, China;
3.School of Computer, National University of Defense Technology, China
Recommended Citation
GB/T 7714
Wang, Yuan,Feng, Xueshang,Zhou, Yufen,et al. A multi-GPU finite volume solver for magnetohydrodynamics-based solar wind simulations[J]. Computer Physics Communications,2018.
APA Wang, Yuan,Feng, Xueshang,Zhou, Yufen,&Gan, Xinbiao.(2018).A multi-GPU finite volume solver for magnetohydrodynamics-based solar wind simulations.Computer Physics Communications.
MLA Wang, Yuan,et al."A multi-GPU finite volume solver for magnetohydrodynamics-based solar wind simulations".Computer Physics Communications (2018).
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