Anyone have experience with PVC piping?

[david at thekramers.net (David Kramer)]

On Friday 10 January 2003 08:04 pm, Bill Horne wrote:
> > times). I think I'll build the 100Mb network (stage one) now while
> > acccumulating the 64 nodes (stage two) then focus on moving to Gigabit
> > (in stage three). I hope this makes sense as I'm still kinda new to this!
> > Any thoughts on who I might tap for gigabit donorships/sponsors?
>
> I read an article about someone that did a cluster using multiple 10/100
> cards per machine, to save on the costs. Try a Google search.

I once read an article on this, but I'll never find it.  I think it was in 
Linux Magazine.

They put three network cards in each of around 80 machines, and the machines 
were wired up to three different switches, and somehow the switches were also 
connected together, and it meant that most machines could talk to each other 
in one hop, and the rest could do it in two hops.  If you lay it out so that 
the SAN/NFS/cluster controller are accessible to all machines in one hop, 
though, for most applications it should cover almost all your net traffic 
needs.

I could be misremembering, but I think they had the SAN on one switch and the 
cluster controller on another switch (OpenPBS?) so that traffic was 
independent, and the third switch was to the intranet outside the cluster for 
issuing commands, etc.

--
DDDD   David Kramer         david at thekramers.net       http://thekramers.net
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