Messages in this thread | | | Date | Tue, 16 Jul 2002 08:45:47 -0700 | From | "Martin J. Bligh" <> | Subject | Re: [patch[ Simple Topology API |
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>> They can also go to no-glue 8-way: >> >> I/O -- A ------ B ------ E ------ G -- I/O >> | | | | >> | | | | >> I/O -- C ------ D ------ F ------ H -- I/O > > > I think the 8-way topology is a little more interesting than > presented. But if not it does look like you can run into issues. > The more I look at it there appears to be a strong dynamic balance > in the architecture between having just enough bandwidth, and low > enough latency not to become a bottleneck, and having a low hardware > cost.
Whilst I don't have a definitive diagram, the "back of a napkin" sketches we came up with at an OLS dinner looked like this:
I/O -- A ------ B ---- E ------ G -- I/O | \/ | | /\ | I/O -- C ------ D ---- F ------ H -- I/O
(please excuse my poor artistic skills). That reduces the max hops from 4 to 3 (if I haven't screwed something up).
M.
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