A tool for optimizing runtime parameters of open MPI

Mohamad Chaarawi*, Jeffrey M. Squyres, Edgar Gabriel, Saber Feki

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    25 Scopus citations


    Clustered computing environments, although becoming the predominant high-performance computing platform of choice, continue to grow in complexity. It is relatively easy to achieve good performance with real-world MPI applications on such platforms, but obtaining the best possible MPI performance is still an extremely difficult task, requiring painstaking tuning of all levels of the hardware and software in the system. The Open Tool for Parameter Optimization (OTPO) is a new framework designed to aid in the optimization of one of the key software layers in high performance computing: Open MPI. OTPO systematically tests large numbers of combinations of Open MPI's run-time tunable parameters for common communication patterns and performance metrics to determine the "best" set for a given platform. This paper presents the concept, some implementation details and the current status of the tool, as well as an example optimizing InfiniBand message passing latency by Open MPI.

    Original languageEnglish (US)
    Title of host publicationRecent Advances in Parallel Virtual Machine and Message Passing Interface - 15th European PVM/MPI Users' Group Meeting, Proceedings
    Number of pages8
    StatePublished - Nov 26 2008
    Event15th European PVM/MPI Users' Group Meeting, EuroPVM/MPI 2008 - Dublin, Ireland
    Duration: Sep 7 2008Sep 10 2008

    Publication series

    NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
    Volume5205 LNCS
    ISSN (Print)0302-9743
    ISSN (Electronic)1611-3349


    Other15th European PVM/MPI Users' Group Meeting, EuroPVM/MPI 2008

    ASJC Scopus subject areas

    • Theoretical Computer Science
    • Computer Science(all)


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