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Collective communication: theory, practice, and experience

2007; Wiley; Volume: 19; Issue: 13 Linguagem: Inglês

10.1002/cpe.1206

1532-0634

Ernie Chan, Marcel Heimlich, A. Purkayastha, Robert A. Geijn,

Interconnection Networks and Systems

Abstract We discuss the design and high‐performance implementation of collective communications operations on distributed‐memory computer architectures. Using a combination of known techniques (many of which were first proposed in the 1980s and early 1990s) along with careful exploitation of communication modes supported by MPI, we have developed implementations that have improved performance in most situations compared to those currently supported by public domain implementations of MPI such as MPICH. Performance results from a large Intel Xeon/Pentium 4 (R) processor cluster are included. Copyright © 2007 John Wiley & Sons, Ltd.