Tutorial: Analyzing MPI Applications with Intel® Trace Analyzer and Collector and Intel® VTune™ Amplifier XE
Compare
two trace files with the help of the Comparison View. To open a
Comparison View for the original application trace file (poisson_sendrecv.single.stf),
go to View > Compare. In the dialog that appears, choose the
trace file of the revised application (poisson_icomm.single.stf).
The Comparison View shows an Event Timeline for each trace file and a
Comparison Function Profile chart.
Zoom into the first iteration in each trace file. The Comparison View looks similar to:
In the Comparison View, you can see that using non-blocking communication helps to remove serialization and decrease the time of communication of processes.