top500 list (was: opteron VS Itanium 2)
ctierney at hpti.com
Mon Nov 17 10:06:40 EST 2003
On Mon, 2003-11-17 at 07:33, Mark Hahn wrote:
> > Sorry Greg, top500 list came out and you lost!
> sigh. Apple bought a benchmark. does this make Apple products better?
Dell bought a benchmark at NCSA (See Tungsten
at #4). Does this mean that Dell knows clusters?
I would be more than happy to have a vendor
decide to let me have their stuff at significant
discount so they can have a good benchmark.
> > BigMac G5 (aka "X") (2200 CPUs) - 10.3 TFlops
> OK, so we already know that their pricing disclosures are ah,
> "optimistic". (nodes probably cost >6k apiece, not half that)
> and their yield is around 59%. not to mention the little bit
> of missing ECC...
I am really curious to know why their are only
getting 59% efficiency when Quadrics system with
similar node counts is above 70%. We know it
isn't an issue with the node speed, because
the X cluster ran at 80% efficiency with 128 nodes.
Whats going on with the Infiniband?????
> actually, I'd love to know what their yield is if they had only
> 4GB per node - almost certainly lower.
> > Lightning (LANL Opteron) (2816 CPUs) - 8.1 TFlops
> yield is 72%.
How much was this system? You sure Linux Networx
didn't 'buy' the business? It seems to be happening
alot these days with large systems.
> > Apple BigMac is number 3, while the Opteron cluster is
> > number 6.
> for the billionth time: rmax is just a matter of how much money
> you have. rmax/rpeak is the only part of top500 that matters.
Yes but besides to politicians and the people funding
the systems, how relevant is the rmax/rpeak ratio?
> I'd like very much to know the actual prices and discounts for Big Mac.
> it's a shame this isn't required for Top500...
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