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Parallel simulation of subsonic fluid dynamics on a cluster of workstations

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1 Author(s)
P. A. Skordos ; MIT, Cambridge, MA, USA

An effective approach of simulating subsonic fluid dynamics on a cluster of non-dedicated workstations is presented. The approach is applied to simulate the flow of air in wind instruments. The use of local-interaction methods and coarse-grain decompositions lead to small communication requirements. The automatic migration of processes from busy hosts to free hosts enables the use of non-dedicated workstations. Simulations of 2D flow achieve 80% parallel efficiency (speedup/processors) using 20 HP-Apollo workstations. Detailed measurements of the parallel efficiency of 2D and 9D simulations are presented, and a theoretical model of efficiency is developed and compared against the measurements. Two numerical methods of fluid dynamics are tested: explicit finite differences, and the lattice Boltzmann method

Published in:

High Performance Distributed Computing, 1995., Proceedings of the Fourth IEEE International Symposium on

Date of Conference:

2-4 Aug 1995