Author: Tom Kerrigan
Date: 12:09:28 02/13/03
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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... 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
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