Author: Chris Carson
Date: 13:14:32 08/18/00
Go up one level in this thread
On August 18, 2000 at 12:42:44, Robert Hyatt wrote: >On August 18, 2000 at 10:54:32, Chris Carson wrote: > >>On August 18, 2000 at 09:21:39, Robert Hyatt wrote: >> >>>On August 18, 2000 at 00:16:04, Peter Kappler wrote: >>> >>>>On August 17, 2000 at 21:59:37, Robert Hyatt wrote: >>>> >>>>>On August 17, 2000 at 17:22:18, Jorge Pichard wrote: >>>>> >>>>>>We only know about Dr Hyatt computer since he annouces it 5 days ago. But why >>>>>>Chessbase does not announces what hardwares they will be using and the same for >>>>>>other with good possibility of winning such as Chess Tiger 12.9 and Shredder 5. >>>>>>They need to bring the best hardware possible that can match Dr Hyatt Alpha >>>>>>system, since Crafty has proven to be playing a la par with the very best >>>>>>ptrograms using comparable hardwares. >>>>>> >>>>>>Pichard. >>>>> >>>>> >>>>>I don't think our alpha is going to turn out to be very fast. I think we >>>>>will be doing maybe 400K nodes per second. A shame, but there was little time >>>>>to try to get a "real good alpha"... >>>>> >>>>>It will still 'play chess' of course. :) >>>> >>>> >>>> >>>>What kind of Alpha are you getting, and what would you have considered a "real >>>>good alpha"?. >>>> >>>>--Peter >>> >>>The 21264A running at 667mhz or faster would be a "good alpha". The 21264 at >>>500 is an "OK alpha". IE we aren't going to be hurting at all, but we could >>>run probably twice as fast. >> >>Here are the Specint2000: >> >>Alpha 500 300 >>Alpha 667 424 >>PIII 1G 438 >>Alpha 833 511 >> >>To bad you could not get the 833. :) >> >>Best Regards, >>Chris Carson > > >SPECINT doesn't tell the whole story in the case of Crafty. Alpha is doing >2x the work of the intel in the SPECINT calculations, since alpha=64 bit ints >and X86=32 bits. And then there is the issue of hardware popcnt, etc, that I >use a lot, but which are not even tested in SPECINT. > >My numbers are generally like this: > >For the X86, my NPS will be clock/2 roughly. For the Alpha, my NPS is roughly >clock*1.5, if it is a 21264A, more like clock if a plain 21264. Thanks. Best Regards, Chris Carson
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