Higher-order CFD and Interface Tracking Methods on Highly-Parallel MPI and GPU systems
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2011-07-01T00:00:00Z
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J. Appleyard and D Drikakis. Higher-order CFD and Interface Tracking Methods on Highly-Parallel MPI and GPU systems. Computers & Fluids, Volume 46, Issue 1, July 2011, Pages 101-105.
Abstract
A computational investigation of the effects on parallel performance of higher-order accurate schemes was carried out on two different computational systems: a traditional CPU based MPI cluster and a system of four Graphics Processing Units (GPUs) controlled by a single quad-core CPU. The investigation was based on the solution of the level set equations for interface tracking using a High-Order Upstream Central (HOUC) scheme. Different variants of the HOUC scheme were employed together with a 3rd-order TVD Runge-Kutta time integration. An increase in performance of two orders of magnitude was seen when comparing a single CPU core to a single GPU with a greater increase at higher orders of accuracy and at lower precision.
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NOTICE: this is the author’s version of a work that was accepted for publication in Computers & Fluids. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Computers & Fluids, Volume 46, Issue 1, July 2011, Pages 101-105. DOI:10.1016/j.compfluid.2010.10.019