Large Scale GPU Accelerated PPMLR-MHD Simulations for Space Weather Forecast

	Large Scale GPU Accelerated PPMLR-MHD Simulations for Space Weather Forecast
	Guo, Xiangyu; Tang, Binbin; Tao, Jian; Huang, Zhaohui; Du, Zhihui
	2016
会议名称	16th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (CCGrid)
会议日期	MAY 16-19, 2016
会议地点	Cartagena, COLOMBIA
关键词	CUDA Space Weather Forecast PPMLR-MHD CUDA-aware MPI
页码	576-581
通讯作者	Du, ZH (reprint author), Tsinghua Univ, Dept Comp Sci & Technol, Tsinghua Natl Lab Informat Sci & Technol, Beijing 100084, Peoples R China.
英文摘要	PPMLR-MHD is a new magnetohydrodynamics (MHD) model used to simulate the interactions of the solar wind with the magnetosphere, which has been proved to be the key element of the space weather cause-and-effect chain process from the Sun to Earth. Compared to existing MHD methods, PPMLR-MHD achieves the advantage of high order spatial accuracy and low numerical dissipation. However, the accuracy comes at a cost. On one hand, this method requires more intensive computation. On the other hand, more boundary data is subject to be transferred during the process of simulation. In this work, we present a parallel hybrid solution of the PPMLR-MHD model implemented using the computing capabilities of both CPUs and GPUs. We demonstrate that our optimized implementation alleviates the data transfer overhead by using GPU Direct technology and can scale up to 151 processes and achieve significant performance gains by distributing the workload among the CPUs and GPUs on Titan at Oak Ridge National Laboratory. The performance results show that our implementation is fast enough to carry out highly accurate MHD simulations in real time.
收录类别	CPCI
会议主办者	IEEE, Assoc Comp Machinery, Univ Ios Andes, Univ Ind Santander, Rensselaer, IEEE Comp Soc Tech Comm Scalable Comp
会议录	2016 16TH IEEE/ACM INTERNATIONAL SYMPOSIUM ON CLUSTER, CLOUD AND GRID COMPUTING (CCGRID)
会议录出版者	IEEE
语种	英语
ISSN号	2376-4414
ISBN号	978-1-5090-2453-7
内容类型	会议论文
源URL	[http://ir.nssc.ac.cn/handle/122/5577]
专题	国家空间科学中心_空间科学部
推荐引用方式 GB/T 7714	Guo, Xiangyu,Tang, Binbin,Tao, Jian,et al. Large Scale GPU Accelerated PPMLR-MHD Simulations for Space Weather Forecast[C]. 见:16th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (CCGrid). Cartagena, COLOMBIA. MAY 16-19, 2016.