Supporting Multiprocess and Multithreaded Programs

TotalView's laminated data view lets you see data values across threads or across processes. Here's an example of what you'll see after you use the Variable Window's View > Laminate command:

A Laminated Variable Window

When debugging MPI programs, using the Tools > Message Queue Graph to display the message queues graphically is the quickest way to see what is going on.

A Message Queue Graph

Clicking on the boxed numbers tells TotalView to place the associated process into a Process Window. Clicking on a number next to the arrow tells TotalView to display more information about that message queue.

As you go through this book, you'll find many more examples.