• 9.1
  • 08/07/2015
  • Public Content

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
Load Balance
tab.
Go to the
Charts
menu to open a Message Profile.
Many Charts
In the Load Balance tab, expand
MPI_Sendrecv
and
MPI_Allreduce
. The Load Balancing indicates that the time spent in
MPI_Sendrecv
increases with the process number, while the time for
MPI_Allreduce
decreases.
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.
Key Terms

Product and Performance Information

1

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