From: Spike Jones (spike66@attglobal.net)
Date: Sat Dec 01 2001 - 22:29:08 MST
"Robert J. Bradbury" wrote:
> On Sat, 1 Dec 2001, Spike Jones wrote:
>
> > Ja. 4,053,946 digits. I underestimated the effect of the P4. {8-[
>
> Spike, you'll have to come up with a better explanation than that.
> I think for us hardcore computer types its generally agreed that
> the P4 is a lemon.... if there is something in the deep pipeline
> architecture that prime searching can take advantage of. ... Robert
The Pentium4 is twice as fast as a similarly clocked P3 at doing
Lucas-Lehmer testing. I dont know how George Woltman was
able to take advantage of that updated instruction set of the P4, dont
know enough about confusers to speculate. The P4 is also nearly
twice as fast as a similarly clocked Athlon, again dont know
why. I can research it and find out.
There are a mere 620 of the Pentium4s doing GIMPS but their
impact has been profound. Those 620 machines (of 8000 on GIMPS)
has been to increase the thruput nearly half again. I am not
a big Intel fan, but if they keep handing me these kinds of gains and
keep Mooreing along, Ill buy their products and perhaps
even their stock. spike
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