Ultra-Scalable CPU-MIC Acceleration of Mesoscale Atmospheric Modeling on Tianhe-2

	Ultra-Scalable CPU-MIC Acceleration of Mesoscale Atmospheric Modeling on Tianhe-2
	Xue, Wei 1; Yang, Chao 1; Fu, Haohuan 1; Wang, Xinliang 1; Xu, Yangtong 1; Liao, Junfeng 1; Gan, Lin 1; Lu, Yutong 1; Ranjan, Rajiv 1; Wang, Lizhe 1
刊名	IEEE TRANSACTIONS ON COMPUTERS
	2015
卷号	64 期号:8 页码:1-9
关键词	Atmospheric modeling MIC Stencil Tianhe-2
通讯作者	Xue, W (reprint author), Tsinghua Univ, Dept Comp Sci & Technol, Beijing 100084, Peoples R China.
英文摘要	In this work an ultra-scalable algorithm is designed and optimized to accelerate a 3D compressible Euler atmospheric model on the CPU-MIC hybrid system of Tianhe-2. We first reformulate the mesocale model to avoid long-latency operations, and then employ carefully designed inter-node and intra-node domain decomposition algorithms to achieve balance utilization of different computing units. Proper communication-computation overlap and concurrent data transfer methods are utilized to reduce the cost of data movement at scale. A variety of optimization techniques on both the CPU side and the accelerator side are exploited to enhance the in-socket performance. The proposed hybrid algorithm successfully scales to 6,144 Tianhe-2 nodes with a nearly ideal weak scaling efficiency, and achieve over 8 percent of the peak performance in double precision. This ultra-scalable hybrid algorithm may be of interest to the community to accelerating atmospheric models on increasingly dominated heterogeneous supercomputers.
研究领域[WOS]	Computer Science, Hardware & Architecture ; Engineering, Electrical & Electronic
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000357929500021
内容类型	期刊论文
源URL	[http://ir.ceode.ac.cn/handle/183411/38409]
专题	遥感与数字地球研究所_SCI/EI期刊论文_期刊论文
作者单位	1.[Xue, Wei 2.Wang, Xinliang 3.Xu, Yangtong 4.Liao, Junfeng 5.Gan, Lin] Tsinghua Univ, Dept Comp Sci & Technol, Beijing 100084, Peoples R China 6.[Xue, Wei 7.Fu, Haohuan 8.Wang, Xinliang 9.Xu, Yangtong 10.Liao, Junfeng
推荐引用方式 GB/T 7714	Xue, Wei,Yang, Chao,Fu, Haohuan,et al. Ultra-Scalable CPU-MIC Acceleration of Mesoscale Atmospheric Modeling on Tianhe-2[J]. IEEE TRANSACTIONS ON COMPUTERS,2015,64(8):1-9.
APA	Xue, Wei.,Yang, Chao.,Fu, Haohuan.,Wang, Xinliang.,Xu, Yangtong.,...&Wang, Lizhe.(2015).Ultra-Scalable CPU-MIC Acceleration of Mesoscale Atmospheric Modeling on Tianhe-2.IEEE TRANSACTIONS ON COMPUTERS,64(8),1-9.
MLA	Xue, Wei,et al."Ultra-Scalable CPU-MIC Acceleration of Mesoscale Atmospheric Modeling on Tianhe-2".IEEE TRANSACTIONS ON COMPUTERS 64.8(2015):1-9.