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Understand the trace output in text format RRS feed

  • Question

  • I need to identify and sizing the MPI communication between CoreIDs (or Ranks). To do this I have to understand the trace output in text format, but I can’t find literature where describe the fields in the output file.

    The TracingMPIApplications file says: “For MS-MPI interconnect events, it includes information describing the interconnect event, including the source rank, destination rank and message sequence”, but I can’t find more information about it.

    I appreciate your help.
    Cheers

    Tuesday, March 16, 2010 12:23 AM

Answers

  • Dear David,

    There is some information about the message data regarding to id filed in the text output format:

    The interconnect events are traced for sockets and shared memory. Each interconnect trace message includes a message id unique across all ranks for the lifetime of the run. The message id in the form id={src.dest.ix}  e.g., id={0.1.3} indicates that this is the 3<sup>rd</sup> message sent from rank 0 to rank 1.

    Please let me know if you need more info.

    Thanks,
    James

    • Marked as answer by David Teran Sunday, April 25, 2010 2:53 AM
    Tuesday, March 16, 2010 10:00 PM