Author: Matthew Hull
Date: 12:33:55 02/13/03
Go up one level in this thread
On February 13, 2003 at 15:09:28, Tom Kerrigan wrote: >On February 12, 2003 at 21:07:57, Robert Hyatt wrote: > >>>>>>The Cray T932 was the last 64 bit machine they built that I used. And it >>>>>How many NPS does Crafty get on it? >>>>about 7M. >>>>And that was Cray Blitz, not Crafty. I have not tried to run Crafty on a Cray, >>> >>>7M per processor? How many processors did those Crays come with? 32? So Crazy >>>Blitz was searching 224M NPS? I stand corrected, the T932 is several times >>>faster than any other processor ever made. >>No. 7M total as I said, spread over 32 processors (actually we only used 31 >>on that machine so that one could be dedicated to handling interrupts and the >>like to avoid unnecessary context switches). > >I guess I can count on you to cite MP numbers when discussing UP performance. > >It's also apparently too much to ask to run the _same program_ on two platforms >to compare their performance. > >That said, 7M/31 = 225k NPS. So at 500MHz, it runs about as fast as a 300MHz >Athlon (Crafty NPS)... Hmmm... On my 500mhz PIII, Crafty 18.15 does 117k nps. I don't think a 300mhz Athlon could do 225k nps. Hmmm indeed. >Well, probably a slower Athlon, given the >relative memory latencies... Yeah, somehow you're not making the case that Cray >processors are super awesome and their compilers eliminate the need for OOOE... > >-Tom
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.