Basermann, Achim und Kersken, Hans-Peter (2010) Scalable Distributed Schur Complement Preconditioning for Real and Complex CFD Problems on Many-Core Architectures. SC10, 2010-11-13 - 2010-11-19, New Orleans, Louisiana, USA.
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Kurzfassung
At the German Aerospace Center, the parallel simulation system TRACE (Turbo-machinery Research Aerodynamic Computational Environment) has been developed for the calculation of internal turbo-machinery flows. The finite volume approach requires the parallel, iterative solution of large, sparse real or complex systems of linear equations. For convergence acceleration of the iteration, scalable Distributed Schur Complement (DSC) preconditioners for real or complex matrix problems have been integrated into TRACE and replace the original block-local preconditioning methods. Numerical, performance and scalability results of DSC methods are presented for typical TRACE problems on many-core architectures together with an analysis of the pros and cons of the complex problem formulation. The DSC preconditioned iterative solvers for the complex problem formulation distinctly outperform the solvers for the real formulation. Reasons are that the complex formulation results in lower problem order, more advantageous matrix structure, has higher data locality and a better ratio of computation to memory access.
elib-URL des Eintrags: | https://elib.dlr.de/64772/ | ||||||||||||
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Dokumentart: | Konferenzbeitrag (Poster) | ||||||||||||
Titel: | Scalable Distributed Schur Complement Preconditioning for Real and Complex CFD Problems on Many-Core Architectures | ||||||||||||
Autoren: |
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Datum: | 16 November 2010 | ||||||||||||
Referierte Publikation: | Ja | ||||||||||||
Open Access: | Ja | ||||||||||||
Gold Open Access: | Nein | ||||||||||||
In SCOPUS: | Nein | ||||||||||||
In ISI Web of Science: | Nein | ||||||||||||
Status: | veröffentlicht | ||||||||||||
Stichwörter: | Distributed Schur Complement; preconditioning; sparse iterative solvers; CFD; real and complex arithmetics; many-core architectures | ||||||||||||
Veranstaltungstitel: | SC10 | ||||||||||||
Veranstaltungsort: | New Orleans, Louisiana, USA | ||||||||||||
Veranstaltungsart: | internationale Konferenz | ||||||||||||
Veranstaltungsbeginn: | 13 November 2010 | ||||||||||||
Veranstaltungsende: | 19 November 2010 | ||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr, Verkehr und Weltraum (alt) | ||||||||||||
HGF - Programm: | Luftfahrt, Weltraum (alt) | ||||||||||||
HGF - Programmthema: | Antriebe (alt), W SY - Technik für Raumfahrtsysteme | ||||||||||||
DLR - Schwerpunkt: | Luftfahrt, Weltraum | ||||||||||||
DLR - Forschungsgebiet: | L ER - Antriebsforschung, W SY - Technik für Raumfahrtsysteme | ||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | L - Virtuelles Triebwerk und Validierungsmethoden (alt), W - Vorhaben SISTEC (alt) | ||||||||||||
Standort: | Köln-Porz | ||||||||||||
Institute & Einrichtungen: | Institut für Simulations- und Softwaretechnik Institut für Simulations- und Softwaretechnik > Verteilte Systeme und Komponentensoftware | ||||||||||||
Hinterlegt von: | Basermann, Dr.-Ing. Achim | ||||||||||||
Hinterlegt am: | 22 Jul 2010 08:44 | ||||||||||||
Letzte Änderung: | 24 Apr 2024 19:30 |
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