[Beowulf] Advice on 4 CPU node configurations

Gus Correa gus at ldeo.columbia.edu
Tue Feb 8 10:54:26 PST 2011

How about the wiring?
Since it is switchless, how much cabling would it require?
The cables don't seem to be fiber.
How do you implement the torus (or other) topology?
With daisy-chains?
A 2D/3D (wraparound) mesh?
I could only find a datasheet for the card and cables
on their site, no pictures of a cluster or servers

Gus Correa

Douglas Eadline wrote:
> Although I wrote about the SMP and the Numascale hardware,
> I have not yet had a chance to use it.
> To me there are two issues worth considering. First,
> if you need a big SMP this might be a low
> cost solution. Second, should your application
> not scale best in a node-based ccNuma system (ScaleMP
> or Numascale), MPI is still an option. Indeed, no need
> to rewrite the codes. And, management is probably
> much easier.
> Of course for large systems, clusters work best.
> --
> Doug
>> On Thu, 2011-02-03 at 09:45 +0000, Hearns, John wrote:
>>> Also look at ScaleMP and Numascale
>>> Here's a damn good article from Doug Eadline:
>>> http://www.linux-mag.com/id/7947
>>> I must admit though I don't know how far a budget of 30K takes you
>>> there!
>> My understanding is that the Numascale cards cost "a bit more" than IB
>> cards but you don't need a switch (it's a 3D taurus I think) so it would
>> be worth looking into.
>> Rob
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> --
> Doug

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