Choosing the subregions in three-level frosch preconditioners

Alexander Heinlein*, Oliver Rheinbach, Friederike Röver

*Corresponding author for this work

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

Abstract

Different graph partitioning methods, i.e., linear partioning, parallel hypergraph (PHG) partioning, and two approaches using ParMETIS, are considered to generate an unstructured decomposition of the second-level coarse operator of three-level FROSch (Fast and Robust Overlapping Schwarz) preconditioners in the Trilinos software library. In our context, the parallel hypergraph method shows the most consistent results.

Original languageEnglish
Title of host publication14th World Congress on Computational Mechanics (WCCM) ECCOMAS Congress 2020)
EditorsF. Chinesta, R Abgrall, O. Allix, M. Kaliske
Pages1-6
Number of pages6
Volume700
DOIs
Publication statusPublished - 2021
Externally publishedYes
Event14th World Congress of Computational Mechanics and ECCOMAS Congress, WCCM-ECCOMAS 2020 - Virtual, Online, Virtual, Online
Duration: 11 Jan 202115 Jan 2021

Publication series

NameWorld Congress in Computational Mechanics and ECCOMAS Congress

Conference

Conference14th World Congress of Computational Mechanics and ECCOMAS Congress, WCCM-ECCOMAS 2020
CityVirtual, Online
Period11/01/2115/01/21

Keywords

  • Coarse Operator
  • Domain Decomposition
  • Mesh Partitioning
  • Overlapping Schwarz
  • Parallel Computing
  • Preconditioners
  • Trilinos

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