>>+ 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 _______________________________________________ ofw mailing list [email protected] http://lists.openfabrics.org/cgi-bin/mailman/listinfo/ofw
