Tutorial: Analyzing MPI Applications with Intel® Trace Analyzer and Intel® VTune™ Amplifier XE
Detect Serialization in Function Profile and Message Profile
Continue the analysis of your application with information provided by other charts.
In the Function Profile chart, open the
Go to the
menu to open a Message Profile.
In the Load Balance tab, expand
. The Load Balancing indicates that the time spent in
increases with the process number, while the time for
Examine the Message Profile Chart down to the lower right corner. The color coding of the blocks indicates that messages travelling from a higher rank to a lower rank need proportionally more time while the messages travelling from a lower rank to a higher rank reveal a weak even-odd kind of pattern.