Parallel Solutions of Three-Dimensional Compressible Flows

Stephane Lanteri 1
1 SINUS - Numerical Simulation for the Engineering Sciences
CRISAM - Inria Sophia Antipolis - Méditerranée
Abstract : In this report, we present parallel solutions of realistic three-dimensional flows obtained on the {\tt Intel Paragon}, the {\tt Cray T3D} and the {\tt Ibm SP2} MPPs (Massively Parallel Processors). The solver under consideration is a representative subset of an existing industrial code, {\tt N3S-MUSCL} (a three-dimensional compressible Navier-Stokes solver, see Chargy\cite{Cha1}). It implements a mixed finite element/finite volume formulation on unstructured tetrahedral meshes. Defining a good strategy for the parallelisation of an unstructured mesh based solver is a challenge, particularly when one aims at reaching a high level of performance while maintaining portability of the source code between scalar, vector and parallel machines. The parallelisation strategy adopted in this study combines mesh partitioning techniques and a message-passing programming model. The mesh partitioning algorithms and the generation of the corresponding communication data-structures are gathered in a preprocessor in order to introduce a minimum change in the original serial code. The portability from one message passing parallel system to another may be enhanced with the use of a communication library such as {\tt PVM}.
Type de document :
Rapport
RR-2594, INRIA. 1995
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https://hal.inria.fr/inria-00074089
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Soumis le : mercredi 24 mai 2006 - 14:29:56
Dernière modification le : samedi 27 janvier 2018 - 01:31:28
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Stephane Lanteri. Parallel Solutions of Three-Dimensional Compressible Flows. RR-2594, INRIA. 1995. 〈inria-00074089〉

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