[ewg] RE: [PATCH] uDAPL release note update for OFED 1.5

[Davis, Arlin R]

>>+	2. SCM - uses sockets to exchange QP information. 
>IPoIB, ARP, and SA
>>queries NOT required.
>
>This is only true if all nodes are connected with a second 
>networking fabric.
>
>>+	3. UCM - use's IB UD QP to exchange QP info. Sockets, 
>ARP, IPoIB, and SA
>>queries NOT required.
>
>Same as above.  Requires out of band (i.e. socket) connections 
>to exchange UD QP
>information.

Yes, these new providers are designed to take
advantage of the fact that MPI implementations query
device addresses and exchange this information before 
connecting rdma devices. I will add a note to clarify 
this point.

-arlin