[mpich-discuss] How can I debug MPI program

[Pavan Balaji]

On 07/28/2011 12:15 AM, clara wrote:
> I see. I find mpich2-1.2 supports -gdb, doesn't it?

mpich2-1.2 had MPD as the default process manager. That was changed to 
Hydra in 1.3 and mpd deprecated.

> Btw, for the current hydra process manager, we can use totalview to
> debug program, don't you?

Yes, totalview, ddt, ddd are all fine. The native gdb itself is 
supported as well. You can even use it as:

% mpiexec -n 1 xterm -e gdb cg.S.2 : -n 1 xterm -e gdb cg.S.2

The "-gdb" option within mpd, on the other hand, isn't the native gdb. 
MPD had its own gdb terminal implemented internally which used to manage 
many independent native gdb's. That option is currently not available 
(till we add it).

  -- Pavan

-- 
Pavan Balaji
http://www.mcs.anl.gov/~balaji