Investigating the performance of collective communications on SMP clusters: A case for MPI-Allgather

Feng Long Gu, Nzigou M. Hyacinthe, Guilherme De Melo Baptista Domingues, Takeshi Nanri, Kazuaki Murakami

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    Message-passing interface (MPI) is a specification targeting parallel processing on Multiple instruction stream, multiple data stream (MIMD) architectures. Collective operation in MPI specification needs intensive communications. This paper reports an investigation on the performance of collective operations on PC clusters and multi-core Symmetric MultiProcessor (SMP) computers. MPI-Allgather is one of the most relevant MPI collective communications. From the comparison between the different MPI Allgather algorithms (Ring and Pair-wise) on different platforms, we describe how multi-core systems can take the best advantage by exploiting difference between inter-node and intra-node communications.

    Original languageEnglish
    Title of host publicationComputation in Modern Science and Engineering - Proceedings of the International Conference on Computational Methods in Science and Engineering 2007 (ICCMSE 2007)
    Pages52-56
    Number of pages5
    Edition2
    DOIs
    Publication statusPublished - 2007
    EventInternational Conference on Computational Methods in Science and Engineering 2007, ICCMSE 2007 - Corfu, Greece
    Duration: Sep 25 2007Sep 30 2007

    Publication series

    NameAIP Conference Proceedings
    Number2
    Volume963
    ISSN (Print)0094-243X
    ISSN (Electronic)1551-7616

    Other

    OtherInternational Conference on Computational Methods in Science and Engineering 2007, ICCMSE 2007
    Country/TerritoryGreece
    CityCorfu
    Period9/25/079/30/07

    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy(all)

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