Getting timing results: compute vs communication

[lahwaacz]

Is it possible to get some timing data from Hypre solve routines? For example, I'd be interested in checking how much time BoomerAMG spends in compute and how much in communication (or rather, waiting for asynchronous communication to finish).

I see there is a --with-timing option in the configure script, but as far as I can tell, there was no change in the output when I tried it. How does it work? Do I need to use some profiling tool to see the timing data?