If you run one of the processes or threads in a group and it hits a barrier point, the Process and Threads View displays Stopped in the Process State column for that process’s or thread’s entry.
If you create a barrier and all the process’s threads are already at that location, TotalView won’t hold any of them. However, if you create a barrier and all of the processes and threads are not at that location, TotalView holds any thread that is already there.
The Processes & Threads view displays which threads or processes are being held when you select “Process Held” or “Thread Held” in the “group by” dialog:
