TotalView Users Guide - CI Wiki

Manipulating Processes and Threads
GUI, you specify the focus using the scope pulldown. For example, if you
select a thread, and then select the Step button, TotalView steps the current
thread. In contrast, if you select Process (Workers) and then select the Go
button, TotalView tells all the processes that are in the same workers group
as the current thread to start executing. (This thread is called the thread of
interest.)
Chapter 13, “Using Groups, Processes, and Threads,” on page 251 describes how
TotalView manages processes and threads. While TotalView gives you the ability to control
the precision your application requires, most applications do not need this level of
interaction. In almost all cases, using the controls in the toolbar gives you all the control
you need.
Stopping Processes and Threads
To stop a group, process, or thread, select a Halt command from the
Group, Process, or Thread pulldown menu on the toolbar.
CLI: dhalt
Halts a group, process, or thread. Setting the focus changes the
scope.
The three Halt commands differ in the scope of what they halt. In all cases,
TotalView uses the current thread, which is called the thread of interest or
TOI, to determine what else it will halt. For example, selecting Process >
Halt tells TotalView to determine the process in which the TOI is running. It
then halts this process. Similarly, if you select Group > Halt, TotalView
determines what processes are in the group in which the current thread
participates in. It then stops all of these processes.
For more information on the Thread of Interest, see “Defining the GOI, POI, and TOI”
on page 251.
When you select the Halt button in the toolbar instead of the commands in
the menubar, TotalView decides what it should stop based on what is set in
the two toolbar pulldown lists.
After entering a Halt command, TotalView updates any windows that can be
updated. When you restart the process, execution continues from the point
where TotalView stopped the process.
Using the Processes/Ranks Tab
The Processes Tab, which is called a Ranks Tab if you are running an MPI
program, contains a grid. Each block in the grid represents one process.
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