The performance and scalability of SHMEM and MPI-2 one-sided routines on a SGI Origin 2000 and a Cray T3E-600: Performances

Authors:
Glenn R. Luecke;Silvia Spanoyannis;Marina Kraeva
Affiliations:
Iowa State University, Ames, IA 50011-2251, U.S.A.;Iowa State University, Ames, IA 50011-2251, U.S.A.;Iowa State University, Ames, IA 50011-2251, U.S.A.
Venue:
Concurrency and Computation: Practice & Experience
Year:
2004

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Abstract

This paper compares the performance and scalability of SHMEM and MPI-2 one-sided routines on different communication patterns for a SGI Origin 2000 and a Cray T3E-600. The communication tests were chosen to represent commonly used communication patterns with low contention (accessing distant messages, a circular right shift, a binary tree broadcast) to communication patterns with high contention (a ‘naive’ broadcast and an all-to-all). For all the tests and for small message sizes, the SHMEM implementation significantly outperformed the MPI-2 implementation for both the SGI Origin 2000 and Cray T3E-600. Copyright © 2004 John Wiley & Sons, Ltd.