On 26 Mar 00, at 11:54, Nathan Russell wrote:
> What about this: 300 assignments per month. Going on vacation? No
> problem.
If you're running say a dozen systems then 12 * 300 = (IMHO) too
many.
If you're going on vacation, why not feed it some assignments which
will take a reasonable time each to complete?
> Just so we know, how long would it take a 1.5 Ghz Athlon to factor 100
> assignments through 64 bits?
How big are the exponents? The time required will be inversely
proportional to the exponent, though there comes a point where larger
exponents should be factored deeper.
I'm not sure there is much to choose between Athlon and PIII for
factoring speed. Take the figure for a 500 MHz system and divide it
by 3, that will be fairly close.
Personally I think GIMPS/PrimeNet is about spending most of the CPU
time crunching numbers rather than communicating with the server.
IMHO if your system is taking less than about a day to complete a
particular type of assignment, you should switch to something better
suited to your system. There is a great deal of trial factoring to 69
bits or more required for 10 million digit range exponents, I reckon
these would take something of the order of a week each on the (so far
hypothetical) 1.5 GHz system.
Regards
Brian Beesley
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