User and Reference Guide

Contents

Recording OpenMP* Regions Information

Intel® Trace Collector can record information about OpenMP* regions in your application into trace file.
To collect this information, make sure to do the following:
Linux* OS
  1. Your application should be:
    • linked with the Intel implementation of OpenMP. See
      User and Reference Guide for the Intel® C++ Compiler
      for details.
    • dynamically linked with Intel® MPI Library.
  2. Use the
    -trace
    option of
    mpirun
    to trace the data.
Note
Using the
LD_PRELOAD
environment variable to trace data will not have the desired effect.
Windows* OS
  1. Your application should be:
    • linked with the Intel implementation of OpenMP.
    • dynamically linked with the
      VT.dll
      library and Intel MPI Library.
    The example command line to compile the application may look as follows:
    > mpiicc -trace -openmp myapp.c
  2. Make sure the
    INTEL_LIBITTNOTIFY64
    environment variable contains the full path to the
    VT.dll
    library.
  3. Run your application using the
    mpiexec
    command to trace the data.
See Also

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.