Hi, you can try mpirun --mca pml ob1 --mca btl tcp,self ...
pml/cm has a higher priority than pml/ob1, so if you have a mtl that fits your network (such as mtl/mxm), then pml/ob1 will be ignored, and the list of allowed/excluded btl become insignificant. Cheers, Gilles On Wed, Aug 16, 2017 at 8:57 PM, Maksym Planeta <mplan...@os.inf.tu-dresden.de> wrote: > Hello, > > I work with an Infiniband cluster, but I want to force OpenMPI to use > specific network interface. > > I tried to do this for example using mpirun as follows: > > mpirun --map-by node --mca btl self,tcp -np 16 bin/is.C.16 > > But counters returned by /usr/sbin/perfquery still keep showing that > transmission happens over ibverbs. > > There is an iboib module on a machine, but counters there (ip -s link) > indicate that the ib0 interface is not used. > > Could you help me to figure out how to properly tell OpenMPI not to use > ibverbs? > > I tried with Open MPI 2.1.0 and 1.10.2, but saw no difference in behavior. > > > -- > Regards, > Maksym Planeta > > > _______________________________________________ > users mailing list > users@lists.open-mpi.org > https://lists.open-mpi.org/mailman/listinfo/users _______________________________________________ users mailing list users@lists.open-mpi.org https://lists.open-mpi.org/mailman/listinfo/users
