A parallel block preconditioner accelerated by coarse grid correction

C. Vuik, J. Frank

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

A block-preconditioner is considered in a parallel computing environment. This preconditioner has good parallel properties, however the convergence deteriorates when the number of blocks increases. Two di_erent techniques are studied to accelerate the convergence: overlapping at the interfaces and using a coarse grid correction. It appears that the latter technique is indeed scalable, so the wall clock time is constant when the number of blocks increases. Furthermore the method is easily added to an existing solution code.

Original languageEnglish
Title of host publicationHigh Performance Computing and Networking - 8th International Conference, HPCN Europe 2000, Proceedings
EditorsMarian Bubak, Hamideh Afsarmanesh, Bob Hertzberger, Roy Williams
PublisherSpringer
Pages99-108
Number of pages10
ISBN (Print)9783540675532
DOIs
Publication statusPublished - 2000
Externally publishedYes
Event8th International Conference on High Performance Computing and Networking, HPCNEurope 2000 - Amsterdam, Netherlands
Duration: 8 May 200010 May 2000

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume1823
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference8th International Conference on High Performance Computing and Networking, HPCNEurope 2000
Country/TerritoryNetherlands
CityAmsterdam
Period8/05/0010/05/00

Bibliographical note

Publisher Copyright:
© Springer-Verlag Berlin Heidelberg 2000.

Keywords

  • Block preconditioner
  • Coarse grid correction
  • Overlapping subdomains
  • Parallel krylov subspace methods

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