Yes, that was a typo. mpi_finalize terminates all mpi processings. On Tue, Feb 1, 2011 at 3:25 AM, Jeff Squyres (jsquyres) <jsquy...@cisco.com>wrote:
> That's not quite right - a call to MPI-finalize does not terminate any > processes. > > If you're seeing this kind of instability, check the usual suspects such as > ensuring you have a totally homogeneous environment (same OS, same version > of OMPI, etc). > > Sent from my PDA. No type good. > > On Feb 1, 2011, at 4:03 AM, "David Zhang" <solarbik...@gmail.com> wrote: > > According to the mpi_finalize documentation, a call to mpi_finalize > terminate all processes. I have ran into this problem before where one > process calls mpi_finalize before other processes reach the same line of > code and cause errors/hang ups. Put a mpi_barrier(mpi_comm_world) before > mpi_finalize would do the trick. > > On Mon, Jan 31, 2011 at 11:40 PM, abc def < <cannonj...@hotmail.co.uk> > cannonj...@hotmail.co.uk> wrote: > >> Hello, >> >> I'm having trouble with some MPI programming in Fortran, using openmpi. >> It seems that my program doesn't work unless I print some unrelated text >> to the screen. For example, if I have this situation: >> >> *** hundreds of lines cut *** >> IF (irank .eq. 0) THEN >> CALL print_results1(variable) >> CALL print_results2(more_variable) >> END IF >> print *, "done", irank >> CALL MPI_FINALIZE(ierr) >> END PROGRAM calculation >> >> The results are not printed unless I include this "print done irank" >> penultimate line. >> Also, despite seeing that all ranks reach the print statement, the program >> hangs, as if they have not all reached MPI_FINALIZE. >> >> Can anyone help me? Why does it do this? >> >> I also had many times where the program would crash if I didn't include a >> print statement in a loop. I've been doing Fortran programming for a while, >> and this is my nightmare debugging scenario since I've never been able to >> figure out why the simple printing of statements magically fixes the >> program, and I usually end up having to go back to a serial solution, which >> is really slow. >> >> If anyone might be able to help me, I would be really really grateful!! >> >> Thank you. >> >> Tom >> >> >> _______________________________________________ >> users mailing list >> <us...@open-mpi.org>us...@open-mpi.org >> <http://www.open-mpi.org/mailman/listinfo.cgi/users> >> http://www.open-mpi.org/mailman/listinfo.cgi/users >> > > > > -- > David Zhang > University of California, San Diego > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users > > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users > -- David Zhang University of California, San Diego
