Hello,

did somebody already debugging in parallel with a graphical frontend? I just tested the mpirunDebug script which is installed under OF/bin/ , this is useful to get a backtrace for each process. A better interaction while debugging with breakpoints etc. would be nice. Has anybody a suggestion how to do this?

Thanks

The closest thing to effective parallel debugging is the TotalView or DDT debugger, but they're both commercial offerings, so they're not free (pretty expensive actually).

One approach is to have GDB connect to each process manually at some user-specified point in the code, and debug in lock-step from there. This is a real pain-in-the-ass approach, and it usually gets frustrating quick enough to dump it altogether.

In the end, printfs, couts and sound programming practices are your best friends.

Thank you very much. I've pimped the mpirunDebug bash script in order to start a graphical frontend for gdb, instead of gdb itself, for each process. You could find it here:

openfoamwiki.net/index.php/HowTo_debugging

It is not as comfortable as Totalview, especially not yet when it comes to restarting, but even much nicer than plain gdb. Maybe one could use the session functionality of the GUI's in order to remember the breakpoints when restarting with mpirunDebug.

Incidentally, since we're on the subject, has anyone heard about the Eclipse Parallel Tools Platform?

eclipse.org/ptp/

This would be nice to try out.

Just wondering about the ptp.. have you tried it out yet?