Re: [OMPI users] Unable to run complicated MPI Program

2020-11-28 Thread CHESTER, DEAN (PGR) via users
Thank you explicitly setting the interface like below has resolved this. Thanks, Dean > On 28 Nov 2020, at 10:27, Gilles Gouaillardet via users > wrote: > > Dean, > > That typically occurs when some nodes have multiple interfaces, and > several nodes have a similar IP on a private/unused

Re: [OMPI users] Unable to run complicated MPI Program

2020-11-28 Thread Gilles Gouaillardet via users
Dean, That typically occurs when some nodes have multiple interfaces, and several nodes have a similar IP on a private/unused interface. I suggest you explicitly restrict the interface Open MPI should be using. For example, you can mpirun --mca btl_tcp_if_include eth0 ... Cheers, Gilles On Fr

[OMPI users] Unable to run complicated MPI Program

2020-11-27 Thread CHESTER, DEAN (PGR) via users
Hi, I am trying to set up some machines with OpenMPI connected with ethernet to expand some batch system we already have in use. This is controlled with Slurm already and we are able to get a basic MPI program running across 2 of the machines but when I compile and something that actually pe