[openib-general] [ANNOUNCE] ContributeRDS(ReliableDatagramSockets) to OpenIB

Bob Woodruff robert.j.woodruff at intel.com
Fri Nov 4 10:57:40 PST 2005


Fab wrote,
>There is not a 1:1 relationship between a UDP application socket and an IB
QP,
>rather there is a single IB connection between systems over which traffic
from
>multiple UDP sockets flows.

>- Fab

That would probably provide better scalability, since there
would not be a 1:1 mapping between UDP sockets and IB connections,
however for large clusters there may still be a scalability issue
if every node needs to have a connection to every other node. 
If you implemented it on top of datagrams instead, then each node
would only need one QP, rather than one for every node in the cluster.

woody




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