Speedbumped UltraSPARC T1

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Speedbumped UltraSPARC T1

Wednesday, January 10. 2007

The speedbumped 1.4 GHz version reached the benchmarks: You will find the respective comparisions at BMseers. I find some observations really noticable:

You need 24 GHz on Xeon to be as fast as an 11.2 GHz on UltraSPARC T1.
At SPECweb2005 doubling the amount of cores in the Xeon world gives you only round about 25 percent more performance (compare HP/Proliant DL380 G5 and Dell/PowerEdge 2950) . Looks like a scalability problem on the Xeon plattform.

And Niagara II isn´t that far in the future. I think this will give us a very solid lead for the forseeable future. The last benchmark lead endured for over a year.

Posted by Joerg Moellenkamp in English at 08:07 | Comments (2) | Trackbacks (0)
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This does not actually surprise me. Back when I was working with the E10k having the machine half-filled was somehow a speed/price efficient solution if only one domain was needed. Adding systemboards and CPUs in one domain over 32 CPUs didn't scale linear as well. So
fully stuffed made only sense where you had more than one domain.
Since the E10k is
an SMP machine it can be pretty much compared with the T2000. Well, everything is quite a bit slower and needs far more power and space so:) But
the scalingeffects
seems to look quite the same.

#1 Rolf (Homepage) on 2007-01-10 11:02 (Reply)

The original article was a little bit misguiding ... there is no scaleability problem in T2000, the problem is in the Xeon plattform

#1.1 Joerg (Homepage) on 2007-01-10 13:43 (Reply)

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