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Performance Profiling Overhead Compensation for MPI Programs

  • Sameer Shende
  • Allen D. Malony
  • Alan Morris
  • Felix Wolf
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3666)

Abstract

Performance profiling of MPI programs generates overhead during execution that introduces error in profile measurements. It is possible to track and remove overhead online, but it is necessary to communicate execution delay between processes to correctly adjust their interdependent timing. We demonstrate the first implementation of a onlne measurement overhead compensation system for profiling MPI programs. This is implemented in the Tau  performance systems. It requires novel techniques for delay communication in the use of MPI. The ability to reduce measurement error is demonstrated for problematic test cases and real applications.

Keywords

Performance measurement analysis parallel computing profiling message passing overhead compensation 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • Sameer Shende
    • 1
  • Allen D. Malony
    • 1
  • Alan Morris
    • 1
  • Felix Wolf
    • 2
  1. 1.Department of Computer and Information ScienceUniversity of Oregon 
  2. 2.Innovative Computing LaboratoryUniversity of Tennessee 

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