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Comparison of coupled solvers for FEM/BEM linear systems arising from discretization of aeroacoustic problems

Emmanuel Agullo 1 Marek Felšöci 1 Guillaume Sylvand 1, 2 
1 HiePACS - High-End Parallel Algorithms for Challenging Numerical Simulations
LaBRI - Laboratoire Bordelais de Recherche en Informatique, Inria Bordeaux - Sud-Ouest
Abstract : When discretization of an aeroacoustic physical model is based on the application of both the Finite Elements Method (FEM) and the Boundary Elements Method (BEM), this leads to coupled FEM/BEM linear systems combining sparse and dense parts. In this work, we propose and compare a set of implementation schemes relying on the coupling of the open-source sparse direct solver MUMPS with the proprietary direct solvers from Airbus Central R&T, i.e. the scalapack-like dense solver SPIDO and the hierarchical H-matrix compressed solver HMAT. For this preliminary study, we limit ourselves to a single 24-core computational node.
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https://hal.inria.fr/hal-03264472
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Submitted on : Monday, June 21, 2021 - 4:27:29 PM
Last modification on : Sunday, June 26, 2022 - 3:09:53 AM
Long-term archiving on: : Wednesday, September 22, 2021 - 6:05:14 PM

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Emmanuel Agullo, Marek Felšöci, Guillaume Sylvand. Comparison of coupled solvers for FEM/BEM linear systems arising from discretization of aeroacoustic problems. COMPAS 2021 - Conférence francophone d'informatique en Parallélisme, Architecture et Système, Jul 2021, Lyon / Virtuel, France. ⟨hal-03264472⟩

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