High efficient parallel numerical surface wave model based on an irregular quasi-rectangular domain decomposition scheme

doi:10.1007/s11430-014-4842-3

CORC > 自然资源部第一海洋研究所 > 自然资源部第一海洋研究所 > 业务部门 > 海洋环境与数值模拟研究室

	High efficient parallel numerical surface wave model based on an irregular quasi-rectangular domain decomposition scheme
	Zhao Wei 1,2; Song ZhenYa 1,2; Qiao FangLi 1,2; Yin XunQiang 1,2
刊名	SCIENCE CHINA-EARTH SCIENCES
	2014-08
卷号	57 期号:8 页码:1869-1878
关键词	surface wave model irregular quasi-rectangular domain decomposition MPI parallel computing load balancing
ISSN号	1674-7313
DOI	10.1007/s11430-014-4842-3
英文摘要	To achieve high parallel efficiency for the global MASNUM surface wave model, the algorithm of an irregular quasi-rectangular domain decomposition and related serializing of calculating points and data exchanging schemes are developed and conducted, based on the environment of Message Passing Interface (MPI). The new parallel version of the surface wave model is tested for parallel computing on the platform of the Sunway BlueLight supercomputer in the National Supercomputing Center in Jinan. The testing involves four horizontal resolutions, which are 1A degrees x1A degrees, (1/2)A degrees x(1/2)A degrees, (1/4)A degrees x(1/4)A degrees, and (1/8)A degrees x(1/8)A degrees. These tests are performed without data Input/Output (IO) and the maximum amount of processors used in these tests reaches to 131072. The testing results show that the computing speeds of the model with different resolutions are all increased with the increasing of numbers of processors. When the number of processors is four times that of the base processor number, the parallel efficiencies of all resolutions are greater than 80%. When the number of processors is eight times that of the base processor number, the parallel efficiency of tests with resolutions of 1A degrees x1A degrees, (1/2)A degrees x(1/2)A degrees and (1/4)A degrees x(1/4)A degrees is greater than 80%, and it is 62% for the test with a resolution of (1/8)A degrees x(1/8)A degrees using 131072 processors, which is the nearly all processors of Sunway BlueLight. When the processor's number is 24 times that of the base processor number, the parallel efficiencies for tests with resolutions of 1A degrees x1A degrees, (1/2)A degrees x(1/2)A degrees, and (1/4)A degrees x(1/4)A degrees are 72%, 62%, and 38%, respectively. The speedup and parallel efficiency indicate that the irregular quasi-rectangular domain decomposition and serialization schemes lead to high parallel efficiency and good scalability for a global numerical wave model.
资助项目	Scientific Research Foundation of the First Institute of Oceanography, State Oceanic Administration[GY02-2010G22]
WOS研究方向	Geology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000339818800016
内容类型	期刊论文
源URL	[http://ir.fio.com.cn/handle/2SI8HI0U/3795]
专题	业务部门_海洋环境与数值模拟研究室
作者单位	1.State Ocean Adm, Inst Oceanog 1, Qingdao 266061, Peoples R China; 2.State Ocean Adm, Key Lab Marine Sci & Numer Modeling MASNUM, Qingdao 266061, Peoples R China
推荐引用方式 GB/T 7714	Zhao Wei,Song ZhenYa,Qiao FangLi,et al. High efficient parallel numerical surface wave model based on an irregular quasi-rectangular domain decomposition scheme[J]. SCIENCE CHINA-EARTH SCIENCES,2014,57(8):1869-1878.
APA	Zhao Wei,Song ZhenYa,Qiao FangLi,&Yin XunQiang.(2014).High efficient parallel numerical surface wave model based on an irregular quasi-rectangular domain decomposition scheme.SCIENCE CHINA-EARTH SCIENCES,57(8),1869-1878.
MLA	Zhao Wei,et al."High efficient parallel numerical surface wave model based on an irregular quasi-rectangular domain decomposition scheme".SCIENCE CHINA-EARTH SCIENCES 57.8(2014):1869-1878.