Higher-order CFD and interface tracking methods on highly-Parallel MPI and GPU systems

J. Appleyard, D. Drikakis

Research output: Contribution to journalArticle

21 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)101-105
Number of pages5
JournalComputers and Fluids
Volume46
Issue number1
DOIs
Publication statusPublished - 1 Jul 2011

Keywords

  • GPU
  • High-order schemes
  • Interface tracking

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