The "-iface ib0" syntax is used by the hydra launcher if MPICH and its derivatives such as MVAPICH. I suggest http://wiki.mcs.anl.gov/mpich2/index.php/Using_the_Hydra_Process_Manager as a starting point.
-Paul On Tue, Oct 24, 2017 at 8:19 PM, [email protected] <[email protected]> wrote: > “ibface” isn’t an OpenMPI cmd line option, so I suspect you are using > something other than OpenMPI. For OMPI, you could specify the interface via > MCA param in the environment or default MCA parameter file. Most MPI > implementations have a similar mechanism - you might check your > documentation. > > > On Oct 24, 2017, at 6:48 PM, Doug Meyer <[email protected]> wrote: > > 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 <[email protected]> > 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 >> >> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= >> >> >> >> >> > > > -- Paul H. Hargrove [email protected] Computer Languages & Systems Software (CLaSS) Group Computer Science Department Tel: +1-510-495-2352 Lawrence Berkeley National Laboratory Fax: +1-510-486-6900
