Hi, I believe that if you are using OpenMPI you can declare the interface. By default it should select the fastest interface on the system. This FAQ may be of help. https://www.open-mpi.org/faq/?category=tcp
If I have misunderstood the problem I apologize. best of luck! Doug On Tue, Oct 24, 2017 at 1:00 PM, Sebastian Eastham <seast...@mit.edu> wrote: > Dear Slurm Developers mailing list, > > When calling the “srun” command, is there any way to specify the desired > network interface? Our network is a mix of ethernet and inifiniband, such > that only a subset of the nodes have an infiniband interface. When using > “mpirun” we can specify “-iface ib0”, but there does not appear to be a > similar option for “srun”. Although we can successfully run our > applications with “srun”, we can see from “iftop” that the application is > communicating purely through the ethernet interface. > > > > Once again, I appreciate any help or guidance that you can give me! > > Regards, > > > > Seb > > =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= > > Dr. Sebastian D. Eastham > > Research Scientist > > Laboratory for Aviation and the Environment > > Massachusetts Institute of Technology > > =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= > > > > >
