[Beowulf] Network considerations for new generation cheap beowulfcluster
larry.stewart at sicortex.com
Wed May 23 14:20:02 PDT 2007
Peter St. John wrote:
> Mostly I was thinking of TMC (famous for the animation in Jurassic
> Park), 1982-1994, from MIT, mostly acquired by Sun; so something from
> CalTech maybe predating that, or competing with it, would be very
> interesting. I'll look, thanks.
> My only artifacts are DOS 3.2 and SVr4 manuals :-)
> On 5/23/07, *Jim Lux* <James.P.Lux at jpl.nasa.gov
> <mailto:James.P.Lux at jpl.nasa.gov>> wrote:
> At 10:52 AM 5/23/2007, Peter St. John wrote:
>> But oh and Jim if you recall any papers about this I could read
>> that would be "Jim" Dandy.
> I was working off memory, and the iPSC/1 and iPSC/2 manuals I have
> in my office as a historical artifact.
> I seem to recall that if you google hypercube and intel, you'll
> turn up some of the papers that were written early on. The guys
> who started with the hypercube interconnect were at CalTech, as I
> recall, and spun off to form a supercomputer company embodying
> that, which Intel also adopted.
The problem with hypercubes is that the number of NICs per node grows
with the machine size. Want to double your machine size? Then add a
NIC to every node you already have. The number of nics, or links, or
cables, grows O(NlogN) for N nodes. You get a machine diameter which is
log N, which is nice, but there are ways to do that with a fixed number
of NICs per node such as fat trees or the Kautz/deBruijn family.
TMC had, among other luminaries, Richard Feynman to help work out the
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