Small PCs cluster
daniel at labtie.mmt.upc.es
Thu Jul 10 08:14:42 EDT 2003
Thanks for the answers, we also checked the Mini-ITX mainboard, but C3
processors don't offer enough FPU raw speed. On the other hand, the
integrated nVidia ethernet controller is in fact a Realtek 8201BL, this
is our last trouble before we decide what to purchase.
Our actual cluster is equipped with 3Com 3c905CX-TX-M ethernet controllers,
our doubt is about that Realtek controller because I suspect that Realtek
ethernet nics put more load onto the main CPU ¿ can anyone confirm this ?
I suppose that the NIC for cluster of choice is 3Com around there, but...
¿ how about Realtek NICs under heavy load? If doesn't work well, we can
afford an extra 3Com NIC of course.
Daniel Fernandez <daniel at labtie.mmt.upc.es>
Laboratori de Termotècnia i Energia - CTTC
> On Fri, 2003-07-04 at 19:29, Gerry Creager N5JXS wrote:
> Relatively speaking the Shuttle cases, while small for a P4 or Athelon
> processor class machine, are pretty big compared to the Mini-ITX
> systems. However, the heat-pipes seem to do a pretty good job of
> off-loading heat and making the heat-exchanger available to ambient air.
> I've not built a cluster so far using this sort of case, but I've got a
> lot of past heat-pipe experience. I'd be tring to maintain a low inlet
> temperature to the rack, and a fairly high, and (uncharacteristically)
> non-laminar airflow through the rack. The idea is to get as much
> airflow incident to the heat-pipe heat exchanger as possible.
> We did a fair bit of heat-pipe work while I was at NASA. We found cood
> radiative characteristics in heat-pipe heat exchangers (the heat-pipes
> wouldn't have worked otherwise!) but they work best when they combine
> both convective and radiative modes and use a cool-air transport.
> I've got a number of isolated small-form-factor PCs now running. I've
> seen no instability with the integrated components in any of these.
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