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Tracing the MPI-IO Calls’ Disk Accesses

  • Thomas Ludwig
  • Stephan Krempel
  • Julian Kunkel
  • Frank Panse
  • Dulip Withanage
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4192)

Abstract

With parallel file I/O we are faced with the situation that we do not have appropriate tools to get an insight into the I/O server behavior depending on the I/O calls in the corresponding parallel MPI program. We present an approach that allows us to also get event traces from the I/O server environment and to merge them with the client trace. Corresponding events will be matched and visualized. We integrate this functionality into the parallel file system PVFS2 and the MPICH2 tool Jumpshot.

Keywords

Performance Analyzer Parallel I/O Visualization Trace-based Tools PVFS2 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Thomas Ludwig
    • 1
  • Stephan Krempel
    • 1
  • Julian Kunkel
    • 1
  • Frank Panse
    • 1
  • Dulip Withanage
    • 1
  1. 1.Ruprecht-Karls-Universität HeidelbergHeidelbergGermany

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