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 language | English |
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Title of host publication | High Performance Computing and Networking - 8th International Conference, HPCN Europe 2000, Proceedings |
Editors | Marian Bubak, Hamideh Afsarmanesh, Bob Hertzberger, Roy Williams |
Publisher | Springer |
Pages | 99-108 |
Number of pages | 10 |
ISBN (Print) | 9783540675532 |
DOIs | |
Publication status | Published - 2000 |
Externally published | Yes |
Event | 8th International Conference on High Performance Computing and Networking, HPCNEurope 2000 - Amsterdam, Netherlands Duration: 8 May 2000 → 10 May 2000 |
Publication series
Name | Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) |
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Volume | 1823 |
ISSN (Print) | 0302-9743 |
ISSN (Electronic) | 1611-3349 |
Conference
Conference | 8th International Conference on High Performance Computing and Networking, HPCNEurope 2000 |
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Country/Territory | Netherlands |
City | Amsterdam |
Period | 8/05/00 → 10/05/00 |
Bibliographical note
Publisher Copyright:© Springer-Verlag Berlin Heidelberg 2000.
Keywords
- Block preconditioner
- Coarse grid correction
- Overlapping subdomains
- Parallel krylov subspace methods