18 Dec
2007
18 Dec
'07
10:43 a.m.
Pete Turnbull wrote:
On 18/12/2007 09:57, Joost van de Griek wrote:
I know we've run odd numbers under fault conditions. Sure, the
interconnections are sub-optimal, but I don't believe it has to be
powers of two.
Anyway, there's nothing stopping someone from building a 7-item
hypercube in a tightly curved space. 8-)
Peace... Sridhar
Sounds
like an ordinary (for SGI types of ordinary) Onyx2. That has
the framebuffer hardware in the upper module, and CPUs in the lower;
one framebuffer module per machine, but up to 7 (IIRC) CPU modules in
multi-rack configurations.
Seven CPU modules is unpossible. The (hyper)cube topology nust be
maintained, so you can only expand a machine by doubling the number of
modules connected together. Powers of two.