Parallelization of a coupled wave-circulation model and its application

doi:10.1007/s10236-010-0274-6

	Parallelization of a coupled wave-circulation model and its application
	Wang, Guansuo 1,2; Qiao, Fangli 1,2; Xia, Changshui 1,2
	2010-04
关键词	MPI SPMD Extra computation Communication
卷号	60
期号	2
DOI	10.1007/s10236-010-0274-6
页码	331-339
英文摘要	Using the technique of Message Passing Interface, a parallelized version of a coupled wave-circulation model was set up. The tested model is a regional one for simulating the seas off China, which is comprised of 450,625 elements and 30 vertical sigma layers. The implementation efficiency was evaluated on two kinds of computers, the HP Integrity Superdome and SGI Altix 4700 multiprocessor. The numerical results show that the low-communication high-extra-computation scheme (LCHC) produces higher efficiency than the high-communication no-extra-computation scheme (HCNC) while the number of processors exceeds 24 for HP Integrity Superdome and eight for SGI Altix 4700, respectively. The experiments with both LCHC and HCNC scheme show super-linear speed-up when the number of processors is small. The model with the LCHC scheme is preferred as it achieves parallel efficiency in excess of 90% on the HP machines for all experiments with the number of processors no more than 100, while the efficiency decreases rapidly with the HCNC scheme after the number of processors increases to more than 24. Numerical results suggest that the parallelization of this coupled wave-circulation model is efficient and portable to a variety of parallel architectures.
会议录	OCEAN DYNAMICS
会议录出版者	SPRINGER HEIDELBERG
会议录出版地	TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
语种	英语
WOS研究方向	Oceanography
WOS记录号	WOS:000275989900013
WOS关键词	PRINCETON OCEAN MODEL
内容类型	会议论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/27214]
专题	自然资源部第一海洋研究所
通讯作者	Wang, Guansuo
作者单位	1.SOA, Inst Oceanog 1, Qingdao, Peoples R China 2.SOA, Key Lab Marine Sci & Numer Modeling MASNUM, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Wang, Guansuo,Qiao, Fangli,Xia, Changshui. Parallelization of a coupled wave-circulation model and its application[C]. 见:.