On Aug 17, 2010, at 11:29 , Gijsbert Wiesenekker wrote:
> I have a four-node quad core cluster. I am running OpenMPI (version 1.4.2) jobs with Torque (version 2.4.8). I can submit jobs using
> #PBS -lnodes=4:ppn=4
> And 16 processes are launched. However if I use
> #PBS -lnodes=4:ppn=1
> #PBS -lnodes=4
> The call to MPI_Init is succesful, but the call to
> MPI_Comm_size(MPI_COMM_WORLD, &mpi_nprocs)
> hangs and never returns.
> Any ideas? Any workarounds?
You may disregard this question, I was fooled by a print statement in the wrong place.