Mixed order discretization based two-level Schwarz preconditioners for a tracer transport problem on the cubed-sphere

ISCAS OpenIR

	Mixed order discretization based two-level Schwarz preconditioners for a tracer transport problem on the cubed-sphere
	Yang, Haijian (1); Yang, Chao (2); Cai, Xiao-Chuan (4); Yang, C.(yangchao@iscas.ac.cn)
	2014
发表期刊	Computers and Fluids
ISSN	457930
摘要	Solving tracer transport problems on the sphere at high resolution is important for atmospheric science. In this paper, we study a fully implicit method that allows larger time step size than explicit methods. The key to the success of the implicit approach is how to solve the discretized linear system at each time step. We investigate a parallel Krylov-Schwarz approach based on two discretizations, and test the proposed algorithm with two benchmark test cases. We show numerically that the solver scales well in terms of both strong and weak scalabilities on a supercomputer with thousands of processors. © 2014 Elsevier Ltd. All rights reserved.; Solving tracer transport problems on the sphere at high resolution is important for atmospheric science. In this paper, we study a fully implicit method that allows larger time step size than explicit methods. The key to the success of the implicit approach is how to solve the discretized linear system at each time step. We investigate a parallel Krylov-Schwarz approach based on two discretizations, and test the proposed algorithm with two benchmark test cases. We show numerically that the solver scales well in terms of both strong and weak scalabilities on a supercomputer with thousands of processors. © 2014 Elsevier Ltd. All rights reserved.
收录类别	EI
部门归属	(1) College of Mathematics and Econometrics, Hunan University, Changsha, Hunan 410082, China; (2) Institute of Software, Chinese Academy of Sciences, Beijing 100190, China; (3) State Key Laboratory of Computer Science, Chinese Academy of Sciences, Beijing 100190, China; (4) Department of Computer Science, University of Colorado Boulder, Boulder, CO 80309, USA
语种	英语
WOS记录号	WOS:000350535100010
引用统计
内容类型	期刊论文
URI标识	http://ir.iscas.ac.cn/handle/311060/17023
专题	中国科学院软件研究所
通讯作者	Yang, C.(yangchao@iscas.ac.cn)
推荐引用方式 GB/T 7714	Yang, Haijian ,Yang, Chao ,Cai, Xiao-Chuan ,et al. Mixed order discretization based two-level Schwarz preconditioners for a tracer transport problem on the cubed-sphere[J]. Computers and Fluids,2014.
APA	Yang, Haijian ,Yang, Chao ,Cai, Xiao-Chuan ,&Yang, C..(2014).Mixed order discretization based two-level Schwarz preconditioners for a tracer transport problem on the cubed-sphere.Computers and Fluids.
MLA	Yang, Haijian ,et al."Mixed order discretization based two-level Schwarz preconditioners for a tracer transport problem on the cubed-sphere".Computers and Fluids (2014).