Choosing the subregions in three-level frosch preconditioners

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Choosing the subregions in three-level frosch preconditioners

Conference Paper (2021)

Author(s)

Alexander Heinlein (Institute of Applied Analysis and Numerical Simulation, University of Stuttgart)

O. Rheinbach (University of Technology Bergakademie Freiberg)

Friederike Röver (University of Technology Bergakademie Freiberg)

Affiliation

External organisation

DOI related publication

https://doi.org/10.23967/wccm-eccomas.2020.084

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

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https://resolver.tudelft.nl/uuid:87ad713a-fad2-4654-847a-735159201528

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Publication Year

2021

Language

English

Affiliation

External organisation

Volume number

700

Pages (from-to)

1-6

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.

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