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Experiments in running a scientific MPI application on Grid'5000

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3 Author(s)
Genaud, S. ; LSIIT-ICPS, Illkirch ; Grunberg, M. ; Mongenet, C.

Over the last couple of years, several dedicated grid platforms have been set up to test applications and middleware for grids. Among these is Grid'5000, a reconfigurable platform gathering resources at nine remote geographical sites in France. This paper presents one of the eight experiments that have tested software scalability at the scale of a thousand processors (i.e. 500-1000) on this grid testbed. The experiment aims at analyzing the behavior of a geophysical application (a seismic ray tracing in a 3D mesh of the Earth). The application is computationally intensive but requires an all-to-all communication phase during which processors exchange their results, which has shown to be a real bottleneck on many hardware platforms. We analyze various runs and show that this application scales well up to about 500 processors on such a grid.

Published in:

Parallel and Distributed Processing Symposium, 2007. IPDPS 2007. IEEE International

Date of Conference:

26-30 March 2007