Re: [OMPI users] Mapping by hwthreads without fully populating sockets

Ben, in my case (two sockets, 6 cores per socket, 2 threads per core) and with Open MPI master $ cat rf rank 0=n0 slot=0 rank 1=n0 slot=12 rank 2=n0 slot=6 rank 3=n0 slot=18 $ mpirun -np 4 --rankfile rf --mca rmaps_rank_file_physical 1 --bind-to hwthread --report-bindings true [n0:38430] M

[OMPI users] Mapping by hwthreads without fully populating sockets

Hi, I'm trying to map by hwthread but only partially populating sockets. For example, I'm looking to create arrangements like this: Rank 0: [B./../../../../../../..][../../../../../../../..] Rank 1: [.B/../../../../../../..][../../../../../../../..] Rank 2: [../../../../../../../..][B./../../../.

Re: [OMPI users] An equivalent to btl_openib_include_if when MXM over Infiniband ?

Hi, Martin The environment variable: MXM_RDMA_PORTS=device:port is what you're looking for. You can specify a device/port pair on your OMPI command line like: mpirun -np 2 ... -x MXM_RDMA_PORTS=mlx4_0:1 ... Best, Josh On Fri, Aug 12, 2016 at 5:03 PM, Audet, Martin wrote: > Hi OMPI_Users &