TotalView Online Help : Chapter 2 Process Window : Thread Menu Commands : Thread > Step
Thread > Step
Steps the current thread over a source line. That is, TotalView executes one line in this thread. If the line contains a functions call, TotalView steps into the function. If more than one statement exists on the line, all are executed.
While this thread is being stepped, no other process executes.
Contrast the action performed by this command with the process and group versions.
The process version runs all threads in the process.
The group version runs all processes in the control group containing the thread of interest.
 
NOTE >> These features are supported when your compiler used sprocs; for example, the MIPSpro OpenMP compiler.
For more information on processes and threads and their behavior while being stepped, see Group, Process, and Thread Control” in the “TotalView Users Guide”.