[Beowulf] Cheap SDR IB
kilian at stanford.edu
Fri Feb 1 20:44:54 EST 2008
On Friday 01 February 2008 12:10:38 pm Mark Hahn wrote:
> how is routing controlled in switchless configs?
It's not. :)
> does IB have node-level forwarding?
No, you can't forward traffic between non-directly connected nodes in
such a ring topology (without any switch). You would need intra-node
routing mechanisms which are not present in OFED. I don't know in other
Besides, for each cross-over pair, you'll be creating a separate subnet,
and each subnet requires its own subnet manager.
However, in a 3-nodes ring, each node can directly connect to all the
other ones, and strictly speaking, you only have 2 subnets. So I guess
node-level fowarding is not an issue, and that's probably a viable
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