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/Pres
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 insight
