In order to examine message queues with TotalView, you must configure mpich with the ` --enable-debug' flag. If and only if you are debugging mpich itself, be sure to configure with the ` -opt=-g' flag as well. (This is not required to debug user code with TotalView and see MPI queues) Neither of these is the default. Of course, your application program must be compiled and linked with ` -g'.