Higher-order CFD and interface tracking methods on highly-Parallel MPI and GPU systems
✍ Scribed by J. Appleyard; D. Drikakis
- Publisher
- Elsevier Science
- Year
- 2011
- Tongue
- English
- Weight
- 654 KB
- Volume
- 46
- Category
- Article
- ISSN
- 0045-7930
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✦ Synopsis
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.