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Title: An Interface to Support the Identification of Dynamic MPI 2 Processes for Scalable Parallel Debugging


Christopher L. Gottbrath, Brian Barrett, Bill Gropp, Ewing "Rusty" Lusk, Jeff Squyres


This paper proposes an interface that will allow MPI 2 dynamic programs, those using MPI SPAWN, CONNECT/ACCEPT or JOIN, to provide information to parallel debuggers such as TotalView about the set of processes that constitute an individual application. The TotalView parallel debugger currently obtains information about the identify the processes directly from the MPI library using a widely accepted proctable interface. The existing interface does not support MPI 2 dynamic operations. The proposed interface supports MPI 2 dynamic operations, subset debugging, and helps the parallel debugger assign meaningful names to processes.

Presented: Euro PVM/MPI 2006, September, 2006, in Bonn, Germany.


euro-pvmmpi-2006-mpi2-debugging.pdf (PDF)

Bibtex reference:

  author =       {Christopher L. Gottbrath and Brian Barrett and Bill Gropp and Ewing "Rusty" Lusk and Jeff Squyres},
  title =        {An Interface to Support the Identification of Dynamic {MPI} 2 Processes for Scalable Parallel Debugging},
  booktitle =    {Proceedings, 13th European PVM/MPI Users' Group Meeting},
  address =      {Bonn, Germany},
  publisher =    {Springer-Verlag},
  series =       {Lecture Notes in Computer Science},
  month =        {September},
  year =         {2006},