Message Queue Display Overview

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. The information is shown in the following figure.

This page displays the state of the process's MPI communicators. In some MPI implementations such as MPICH, user-visible communicators are implemented as two internal communicator structures, one for point-to-point and the other for collective operations. TotalView displays both.

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

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

Message Queue Window