On 16 Aug 2001, at 23:58, Jeffrey Euclide wrote:
> Just curious of something here, since I've upgraded to a faster
> machine, 1.333GHz(1.47 oc'd), 512M DDR on a win2k platform if it would
> be prudent to take on factoring 10M digit primes, thanks ahead....
Prudent? In what respect?
You're much more likely to find a prime by sticking to "ordinary" LL
tests - but obviously much less likely to win $100K.
Even with that power, it's still going to take ~3 months per
exponent to test 10M digit numbers. So it may be more "fun" to
stick to "ordinary" LL tests.
Personally I'd run double-checks for a few weeks & check that the
results are working into the lucas_v database. Overclocking
Athlons is not easy, they overheat very readily when the FPU is
driven hard (which Prime95 does). The fact that the system boots
clean at 1.47 GHz (presumably 11 x 133 MHz), or even passes
Memt25 at that speed, does not mean that Prime95 will be reliable
with that much overclocking.
You can improve the reliability of Prime95 by running with roundoff
checking enabled (Advanced menu) but this will cost about 15% in
run speed (for Prime95 only). If you see no errors at all over a year
or so, you're probably OK. However bear in mind that hardware
glitches (often due to overclocking or overheating) can still creep
through even with roundoff checking enabled.
If you find that Prime95 _is_ reliable at that speed, please tell me
which CPU cooler unit you're using, and whether you can live with
the fan noise - I've found that most of the better CPU coolers are
rather loud :(
Regards
Brian Beesley
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