From: Josh Guffin Newsgroups: comp.parallel.mpi Subject: Re: A real puzzler? Date: Fri, 16 Jul 1999 09:03:17 -0500 Organization: Purdue University Message-Id: References: Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII In-Reply-To: Xref: ukc comp.parallel.mpi:5340 I would suggest that you post the relavent source Cheers On Thu, 15 Jul 1999, Albert Schueller wrote: > > Hi all, > > I have a simple fortran program that uses mpi. I start the communicator, > call a subroutine that has some parallelization in it, shut down the > communicator and stop the program. As I was modifying the program, it > started throwing cores at the mpi_finalize statment, which immediately > follows the one subroutine call. I put a print*, myid after the > subroutine, but before the mpi_finalize and only proc 0 prints out its id > (while ALL the procs SHOULD print this), which suggests only proc 0 is > getting returned from the subroutine. However, if I also put a print*, > myid immediately before the RETURN statement in the aforementioned > subroutine, all of the procs sucessfully print their ids. This indicates > that all of the procs are getting to the return statement in the > subroutine, but only proc 0 is actually getting back to the main program. > Why are the other procs not getting back to the calling program? > > I should also point out that the program is running properly, except for > the core dump at mpi_finalize. > > Clues? > > Thanks, > > Albert > > -- > Albert Schueller Department of Mathematics > Office Phone: 509-522-4432 Whitman College > Public Key: http://carrot.whitman.edu/pgp.key Walla Walla, WA USA 99362 > > =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= = Josh Guffin guffin@purdue.edu = = Purdue U. HEP - TASK E expert.cc.purdue.edu/~guffin = = finger guffin@purdue #include = =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=