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Persistent URL http://purl.org/net/epubs/work/50493
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Record Id 50493
Title High-performance computing SPH : towards a hundred million particle simulation
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Abstract Few 3-D SPH simulations have been carried out in Computational Fluid Dynamics (CFD) to our knowledge, mainly due to prohibitive computational investment since the number of particles required in 3-D is usually too large to be handled by a single processor. In this paper, the new parallel version of the SPH code, Spartacus-3D, is presented. The modifications to the code, based on a localisation of previously global arrays, combined with a switch from global to local communications where possible, leads to a better efficiency of the code and an increase in the number of particles that can be handled in a simulation. We have reached 103M particles on 2,048 cores of the UK's highend computer (Cray XT4, HECToR). The parallelisation strategy is discussed as well as results regarding the speed up of the code. Two simulations of 3-D channel flow are carried out, the former in the laminar regime and the latter in the turbulent regime.
Organisation CSE , CSE-CEG , STFC
Keywords Engineering
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Language English (EN)
Type Details URI(s) Local file(s) Year
Paper In Conference Proceedings In 3rd International SPHERIC SPH Workshop, Lausanne, Switzerland, 4-6 Jun 2008, (2008). 2008