TotalView Users Guide - CI Wiki

Figure 106: PVM Tasks and
Configuration Window
Debugging PVM (Parallel Virtual Machine) and DPVM Applications
Attaching to PVM/DPVM Tasks
You can attach to a PVM or DPVM task if the following are true:
� The computer architecture on which the task is running is the same as
the computer architecture upon which TotalView is running.
� The task must be created. (This is indicated when flag 4 is set in the PVM
Tasks and Configuration Window.)
� The task must not be a PVM tasker. If flag 400 is clear in the PVM Tasks
and Configuration Window, the process is a tasker.
� The executable name must be known. If the executable name is listed as a
dash (–), TotalView cannot determine the name of the executable. (This
can occur if a task was not created with the pvm_spawn() call.)
To attach to a PVM or DPVM task:
1 Select the Tools > PVM Tasks command from the Root Window.
TotalView responds the PVM Tasks Window. (See Figure 106.)
This window displays current information about PVM tasks and hosts—
TotalView automatically updates this information as it receives events
from PVM.
Since PVM doesn’t always generate an event that allows TotalView to
update this window, use the Window > Update command to ensure that
you are seeing the most current information.
For example, you can attach to the tasks named xep and mtile in the preceding
figure because flag 4 is set. In contrast, you cannot attach to the
– (dash) executables and tvdsvr, because flag 400 is set.
2 Dive on a task entry that meets the criteria for attaching to tasks.
TotalView attaches to the task.
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