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Peter St. John wrote:
<blockquote
cite="mide4d4fd070705231332w85f1ebet96567031c617c2b7@mail.gmail.com"
type="cite">
<div>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.
</div>
<div>My only artifacts are DOS 3.2 and SVr4 manuals :-)</div>
<div>Peter<br>
<br>
</div>
<div><span class="gmail_quote">On 5/23/07, <b
class="gmail_sendername">Jim Lux</b> <<a
href="mailto:James.P.Lux@jpl.nasa.gov">James.P.Lux@jpl.nasa.gov</a>>
wrote:</span>
<blockquote class="gmail_quote"
style="border-left: 1px solid rgb(204, 204, 204); margin: 0px 0px 0px 0.8ex; padding-left: 1ex;">
<div><span class="q">At 10:52 AM 5/23/2007, Peter St. John wrote:<br>
<blockquote cite="http://" type="cite">But oh and Jim if you recall
any papers about this I could read that would be "Jim" Dandy.</blockquote>
<br>
</span>I was working off memory, and the iPSC/1 and iPSC/2 manuals
I have in my office as a historical artifact. <br>
<br>
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.
<div><span class="e" id="q_112ba5798490deee_3"><br>
</span></div>
</div>
</blockquote>
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<br>
</blockquote>
<br>
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.<br>
<br>
TMC had, among other luminaries, Richard Feynman to help work out the
routing software.<br>
<br>
-Larry<br>
<br>
!DSPAM:4654b06a262101396896698!
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