Hi, With MXM, you can specify list of devices to use for communication: -x MXM_IB_PORTS="mlx5_1:1,mlx4_1:1"
also select specific or all transpoirts: -x MXM_TLS=shm,self,ud To change port rate one can use *ibportstate* *http://www.hpcadvisorycouncil.com/events/2011/switzerland_workshop/pdf/Presentations/Day%202/2_IB_Tools.pdf <http://www.hpcadvisorycouncil.com/events/2011/switzerland_workshop/pdf/Presentations/Day%202/2_IB_Tools.pdf>* *M* On Wed, Apr 15, 2015 at 10:09 AM, John Hearns <hear...@googlemail.com> wrote: > If you have a system with two IB cards, can you choose using a command > line switch which card to use with Openmpi? > > Also a more general question - can you change (or throttle back) the speed > at which an Infiniband card works at? > For example, to use an fDR card at QDR speeds. > > Thanks for any insights! > > _______________________________________________ > users mailing list > us...@open-mpi.org > Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users > Link to this post: > http://www.open-mpi.org/community/lists/users/2015/04/26734.php > -- Kind Regards, M.
