Intel® Trace Analyzer and Collector User and Reference Guide

User Guide

  • 2022.2
  • 08/08/2022
  • Public Content
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:
  2. Use the
    -trace
     option of
    mpirun
     to trace the data.
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.

Product and Performance Information

1

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