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Scalable Distributed Schur Complement Preconditioning for Real and Complex CFD Problems on Many-Core Architectures

Basermann, Achim and Kersken, Hans-Peter (2010) Scalable Distributed Schur Complement Preconditioning for Real and Complex CFD Problems on Many-Core Architectures. SC10, 13.-19. Nov. 2010, New Orleans, Louisiana, USA.

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Abstract

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.

Document Type:Conference or Workshop Item (Poster)
Title:Scalable Distributed Schur Complement Preconditioning for Real and Complex CFD Problems on Many-Core Architectures
Authors:
AuthorsInstitution or Email of Authors
Basermann, AchimDLR-KP, SC-VSS
Kersken, Hans-PeterDLR-KP, SC-VSS
Date:16 November 2010
Refereed publication:Yes
Status:Published
Keywords:Distributed Schur Complement; preconditioning; sparse iterative solvers; CFD; real and complex arithmetics; many-core architectures
Event Title:SC10
Event Location:New Orleans, Louisiana, USA
Event Type:international Conference
Event Dates:13.-19. Nov. 2010
HGF - Research field:Aeronautics, Space and Transport, Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics, Space (old)
HGF - Program Themes:Propulsion Systems, W SY - Technik für Raumfahrtsysteme
DLR - Research area:Aeronautics, Space
DLR - Program:L ER - Engine Research, W SY - Technik für Raumfahrtsysteme
DLR - Research theme (Project):L - Virtual Engine and Validation Methods, W - Vorhaben SISTEC (old)
Location: Köln-Porz
Institutes and Institutions:Institut of Simulation and Software Technology
Institut of Simulation and Software Technology > Distributed Systems and Component Software
Deposited By: Achim Basermann
Deposited On:22 Jul 2010 08:44
Last Modified:08 May 2014 23:22

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