TotalView Users Guide - CI Wiki

Displaying the Message Queue Graph Window
Figure 87: Tools > Message
Queue Graph Options
Window
Figure 88: Tools > Message
Queue Graph Options.
Filter Tab
You can directly select which ranks you want displayed in the lower part of
the window. The Filter on specified message tags area lets you name which
tags should be used as filters. Finally, you can select a group or a communicator
in the group pulldown, If you have created your own communicators
and groups, they will appear here.
Changes made within the Options dialog box do not occur until after you
click the Apply button. The graph window will then change to reflect your
changes.
The message queue graph shows your program’s state at a particular
instant. Selecting the Update button tells TotalView to fetch new information
and redraw the graph.
The numbers in the boxes within the Message Queue Graph Window indicate
the MPI message source or destination process rank. Diving on a box
tells TotalView to open a Process Window for that process.
The numbers next to the arrows indicate the MPI message tags that existed
when TotalView created the graph. Diving on an arrow tells TotalView to dis-
108 Chapter 6: Setting Up MPI Debugging Sessions