On Dec 17, 2007, at 10:42 PM, Dave wrote:
Hmm, the only difference I was aware of was the I/O
module...keyboard/mouse interface or not.
-Dave
For Onyx2 Deskside, the midplane is indeed different (has an XIO
connection to the graphics side, and a graphics side). Onyx2 rack uses
standard Origin2000 compute modules with the Xtown external XIO
interface linking the compute modules to the graphics module(s), which
in the case of a rack support 2 pipelines.
Deskside Onyx2 also comes with only null routers, so 4 procs is the
max. Some people have tried putting in full routers, but I don't recall
having heard any success. I don't think O2000 has this issue (except
for one model of IP31 (one of the 250MHz boards, I think) that has a
hard limit in the PROM about how many other nodes it will work with
before becoming sulky. Marketing department at work.