About Barrier Breakpoint States
Processes and threads at a barrier point are held or stopped, as follows:
A held process or thread cannot execute until all the processes or threads in its group are at the barrier, or until you manually release it. The various go and step commands from the Group, Process, and Thread menus cannot start held processes.
When all processes in the group reach a barrier point, TotalView automatically releases them. They remain stopped at the barrier point until you tell them to resume executing.
You can manually release held processes and threads with the Hold and Release commands found in the Group, Process, and Thread menus. When you manually release a process, the go and step commands become available again.
CLI: dfocus ... dhold
dfocus ... dunhold
You can reuse the Hold command to again toggle the hold state of the process or thread. See Holding and Releasing Processes and Threads for more information.
When a process or thread is held, TotalView displays Stopped next to the relevant process or thread in the Process State column of the Root Window.