About the Message Queue Display

After an MPI process returns from the call to MPI_Init(), you can display the internal state of the MPI library by selecting the Tools > Message Queue command, Figure 89.

Figure 89: Message Queue Window

This window displays the state of the process’ MPI communicators. If user-visible communicators are implemented as two internal communicator structures, TotalView displays both. One is used for point-to-point operations and the other is used for collective operations.

You cannot edit any of the fields in the Message Queue Window.

The contents of the Message Queue Window are only valid when a process is stopped.