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Communication dans un congrès

Mixed formulations and iterative solver for the parallelisation of a forging simulation software by mesh partitioning

Abstract : A parallel implementation of the Preconditioned Conjugate Residual (PCR) method is described. The method is used to solve the discretised generalised Stokes problem derived from the simulation of complex 2D axisymetrical hot metal forming processes. We numerically show that the use of a simple Block Diagonal (BDS) preconditioner results in a high level of parallelism. However in 2D, the iterative solver with BDS is much slower than the direct one. Hence, better sequential and parallel preconditioners, like incomplete factorisations ILU, are studied. It results in an almost twice faster parallel code, but with a loss in scalability due to the increase of communications between processors.
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Communication dans un congrès
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https://hal-mines-paristech.archives-ouvertes.fr/hal-00538294
Contributeur : Corinne Matarasso <>
Soumis le : lundi 22 novembre 2010 - 11:57:06
Dernière modification le : jeudi 24 septembre 2020 - 17:22:54

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Etienne Perchat, Lionel Fourment, Thierry Coupez. Mixed formulations and iterative solver for the parallelisation of a forging simulation software by mesh partitioning. 3rd Euro-Conference on Parallel and Distributed Computing for Computational Mechanics, Mar 1999, Weimar, Germany. p.67-72, ⟨10.4203/ccp.57.3.1⟩. ⟨hal-00538294⟩

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