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Scalable Preconditioned Solvers for Internal and External Flow Computations on Many-Core Systems

Basermann, Achim and Kersken, Hans-Peter and Zöllner, Melven (2011) Scalable Preconditioned Solvers for Internal and External Flow Computations on Many-Core Systems. 17th Conference of the International Linear Algebra Society, 22.-26.08.2011, Braunschweig, Deutschland.

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Abstract

At the German Aerospace Center (DLR), the parallel simulation systems TAU and TRACE have been developed for the aerodynamic design of aircrafts or turbines for jet engines. Large-scale computing resources allow more detailed numerical investigations with bigger numerical configurations. Up to 50 million grid points in a single simulation are becoming a standard configuration in the industrial design. Both CFD solvers, TAU and TRACE, require the parallel solution of large, sparse real or complex systems of linear equations. For the parallel iterative solution of these equation systems, various block-local preconditioners are compared with global Distributed Schur Complement (DSC) preconditioning methods for real or complex matrix problems. Numerical, performance and scalability results of preconditioned FGMRes algorithms are presented for typical TAU and TRACE problems from external or internal flow simulations on many-core systems together with an analysis of the avantages of the complex problem formulation.

Document Type:Conference or Workshop Item (Speech)
Title:Scalable Preconditioned Solvers for Internal and External Flow Computations on Many-Core Systems
Authors:
AuthorsInstitution or Email of Authors
Basermann, AchimDLR-KP, SC-VSS
Kersken, Hans-PeterDLR-KP, SC-VSS
Zöllner, MelvenRWTH Aachen
Date:2011
Refereed publication:Yes
Status:Published
Keywords:Scalable iterative solvers, scalable precodnitioners, sparse systems of linear equations, parallel flow computations, many-core systems
Event Title:17th Conference of the International Linear Algebra Society
Event Location:Braunschweig, Deutschland
Event Type:international Conference
Event Dates:22.-26.08.2011
Organizer:ILAS (International Linear Algebra Society)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Technik für Raumfahrtsysteme
DLR - Research theme (Project):R - Vorhaben SISTEC
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:01 Mar 2012 08:06
Last Modified:23 Dec 2013 11:10

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