18 Dec
2007
18 Dec
'07
6:55 a.m.
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.
--
Pete Peter Turnbull
Network Manager
University of York
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.