Kilian, S. and Münch, M. (2009) A new generalized domain decomposition strategy for the efﬁcient parallel solution of the FDSpressure equation. Part I: Theory, Concept and Implementation. ZIBReport, 0919 . 30 pages. ISSN 14380064

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Official URL: http://opus.kobv.de/zib/volltexte/2009/1182/
Abstract
Due to steadily increasing problem sizes and accuracy requirements as well as storage restrictions on singleprocessor systems, the efficient numerical simulation of realistic fire scenarios can only be obtained on modern highperformance computers based on multiprocessor architectures. The transition to those systems requires the elaborate parallelization of the underlying numerical concepts which must guarantee the same result as a potentially corresponding serial execution and preserve the convergence order of the original serial method. Because of its low degree of inherent parallelizm, especially the efficient parallelization of the elliptic pressure equation is still a big challenge in many simulation programs for fireinduced flows such as the Fire Dynamics Simulator (FDS). In order to avoid losses of accuracy or numerical instabilities, the parallelization process must definitely take into account the strong global character of the physical pressure. The current parallel FDS solver is based on a relatively coarsegrained parallellization concept which can’t guarantee these requirements in all cases. Therefore, an alternative parallel pressure solver, ScaRC, is proposed which ensures a high degree of global coupling and a good computational performance at the same time. Part I explains the theory, concept and implementation of this new strategy, whereas Part II describes a series of validation and verification tests to proof its correctness.
Item Type:  Article 

Subjects:  Mathematical and Computer Sciences > Mathematics > Applied Mathematics 
Divisions:  Department of Mathematics and Computer Science > Institute of Mathematics > Geophysical Fluid Dynamics Group 
ID Code:  787 
Deposited By:  Ulrike Eickers 
Deposited On:  02 Nov 2009 13:52 
Last Modified:  03 Mar 2017 14:40 
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