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J.F. Lassignardie, Y. Escaig, G. Touzot, "Direct Domain Decomposition Method on a Distributed Memory Architecture", in B.H.V. Topping, (Editor), "Advances in Computational Mechanics with High Performance Computing", Civil-Comp Press, Edinburgh, UK, pp 65-72, 1998. doi:10.4203/ccp.52.3.3

Abstract

This article presents different issues of the implementation of a domain decomposition method on distributed memory systems. The proposed domain decomposition method uses direct solvers for the local problems and for the interface problem. This method, which is sequentially as efficient as other direct solvers (like sparse solvers) shows an inherent parallelism during the resolution of the local problems. Besides, the interface problem, of which the matrix is stored in a skyline format, can be solved in parallel. The parallel performances of the method, implemented on a Cray T3E, are analysed and compared with a algebraic parallelisation of a finite element problem. The method appears to be efficient and better than a traditionnal parallelisation of a finite element problem and also offers a better scalability if the size of the problem increases.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 52 ADVANCES IN COMPUTATIONAL MECHANICS WITH HIGH PERFORMANCE COMPUTING Edited by: B.H.V. Topping Paper III.3 Direct Domain Decomposition Method on a Distributed Memory Architecture J.F. Lassignardie, Y. Escaig and G. Touzot INSA de Rouen, St Etienne du Rouvray, France doi:10.4203/ccp.52.3.3 purchase the full-text of this paper Full Bibliographic Reference for this paper J.F. Lassignardie, Y. Escaig, G. Touzot, "Direct Domain Decomposition Method on a Distributed Memory Architecture", in B.H.V. Topping, (Editor), "Advances in Computational Mechanics with High Performance Computing", Civil-Comp Press, Edinburgh, UK, pp 65-72, 1998. doi:10.4203/ccp.52.3.3 Abstract This article presents different issues of the implementation of a domain decomposition method on distributed memory systems. The proposed domain decomposition method uses direct solvers for the local problems and for the interface problem. This method, which is sequentially as efficient as other direct solvers (like sparse solvers) shows an inherent parallelism during the resolution of the local problems. Besides, the interface problem, of which the matrix is stored in a skyline format, can be solved in parallel. The parallel performances of the method, implemented on a Cray T3E, are analysed and compared with a algebraic parallelisation of a finite element problem. The method appears to be efficient and better than a traditionnal parallelisation of a finite element problem and also offers a better scalability if the size of the problem increases. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £56 +P&P)
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