MUST: A Scalable Approach to Runtime Error Detection in MPI Programs

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The Message-Passing Interface (MPI) is large and complex. Therefore, programming MPI is error prone. Several MPI runtime correctness tools address classes of usage errors, such as deadlocks or nonportable constructs. To our knowledge none of these tools scales to more than about 100 processes. However, some of the current HPC systems use more than 100,000 cores and future systems are expected to use far more. Since errors often depend on the task count used, we need correctness tools that scale to the full system size. We present a novel framework for scalable MPI correctness tools to address this need. Our ... continued below

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PDF-file: 16 pages; size: 0.6 Mbytes

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Hilbrich, T; Schulz, M; de Supinski, B R & Muller, M March 24, 2010.

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The Message-Passing Interface (MPI) is large and complex. Therefore, programming MPI is error prone. Several MPI runtime correctness tools address classes of usage errors, such as deadlocks or nonportable constructs. To our knowledge none of these tools scales to more than about 100 processes. However, some of the current HPC systems use more than 100,000 cores and future systems are expected to use far more. Since errors often depend on the task count used, we need correctness tools that scale to the full system size. We present a novel framework for scalable MPI correctness tools to address this need. Our fine-grained, module-based approach supports rapid prototyping and allows correctness tools built upon it to adapt to different architectures and use cases. The design uses PnMPI to instantiate a tool from a set of individual modules. We present an overview of our design, along with first performance results for a proof of concept implementation.

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PDF-file: 16 pages; size: 0.6 Mbytes

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  • Presented at: 3rd Parallel Tools Workshop, Dresden, Germany, Sep 14 - Sep 15, 2009

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  • Report No.: LLNL-CONF-426350
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 974859
  • Archival Resource Key: ark:/67531/metadc933691

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  • March 24, 2010

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

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  • Dec. 8, 2016, 8:42 p.m.

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Hilbrich, T; Schulz, M; de Supinski, B R & Muller, M. MUST: A Scalable Approach to Runtime Error Detection in MPI Programs, article, March 24, 2010; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc933691/: accessed December 14, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.