On 1 Sep 2010, at 21:13, Brock Palen wrote:
> I have a code for a user (namd if anyone cares) that on a specific case will lock up, a quick ltrace shows the processes doing Iprobes over and over, so this makes me think that a process someplace is blocking on communication.
> What is the best way to look at message queues? To see what process is stuck and to drill into.
The only three programs I know which can do this are TotalView, DDT and Padb. Totalview and DDT are graphical parallel debuggers and are commercial projects, Padb is a command-line tool and is open-source
Ashley (padb developer)
Ashley Pittman, Bath, UK.
Padb - A parallel job inspection tool for cluster computing