Hi Tim, dah, why did I not think of that? So simple. Thanks again.
> -----Original Message----- > From: users-boun...@open-mpi.org [mailto:users-boun...@open-mpi.org] On > Behalf Of Tim Prins > Sent: Monday, 9 July 2007 10:41 AM > To: n...@nevclark.com; Open MPI Users > Subject: Re: [OMPI users] Can I run MPI and non MPI programs together > > On Sunday 08 July 2007 08:22:04 pm Neville Clark wrote: > > I have openmpi installed and running, but have a need to run non mpi > > programs (3rd party software for which I don't have the source) together > > with mpi programs. > > > > Have managed to simplify the problem down to the following > > > > JobA > > int main(.) > > { > > printf("Starting JobA\n"); > > MPI::Init(); > > printf("JobA Init done\n"); > > } > > > > JobB > > Int main(.) > > { > > printf("Starting JobB\n"); > > } > > > > And running with > > mpirun -mca btl tcp,self,sm -np 1 -host lyre JobA : -np 1 -host lyre > JobB > > > > The output is the two messages "Starting ." message and then hangs. > > > > It would appear that the MPI::Init() is waiting for all Ranks to call > > MPI::Init() before continuing. > This is correct. You cannot run both mpi and non-mpi processes like this > together. The best you can do is run mpirun twice. > > Hope this helps, > > Tim > > > > > Please note the above works as expected if we run either two JobAs or > two > > JobBs. Only have a problem if there is a mixture of JobAs and JobBs. > > > > Is there a way around this problem? > > > > Thanks in advance Neville > > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users
