[Beowulf] slightly [OT] smp boxes
hahn at mcmaster.ca
Mon Oct 20 15:16:45 EDT 2008
> Large scale NUMA architecture at cluster pricing.
that's fairly exciting! is this stuff somehow related to the
newisys horus system?
> Disclaimer: Yes I work for them. If you have any questions, I'll be glad to
> answer them.
OK, what's the memory profile like? ie, latency for memory from
l1 cache hit all the way to all-misses-farthest-node. it would be
nice to know a bit more about the actual fabric (dolphinics-sci-like?
the whitepaper mentions "PCI Express Gen-2 type signals", but what
does that mean? also, the WP seems pretty HT/Opteron-specific;
plans for intel support? I know of only a few systems which ship
with HTX slots - not an endangered species? also, <1us MPI latency
sounds good, but I'm not clear on the bandwidth: what kind of single
pair bandwidth is possible, as well as all-pairs?
thanks, mark hahn.
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