>Has anyone else noticed Prime95 executing at twice the speed
>while factoring then slowing down when it gets to a certain
>point in the factoring process?
>Let me clarify a bit more...I have a PII500 that while
>working on a factor for M9899041 does about .050 seconds
>per iteration. I've noticed that it does about .029
>seconds per iteration when it is factoring through
>1069176222*2. Is there some reason why there would be
>such a huge difference in speed after that point?
Actually, the point is closer to 1073500000*2^32, and yes
the change is normal. It happens after the program gets
through the trial factors up to 2^62. After it reaches the
upper limit of 2^64 (approx. 4290000000*2^32), it goes back
down. It's partially a result of the fact that there are
many more trial factors to test between 2^62 and 2^64.
>I've done the usual things - make sure nothing else
>is running, run WinTop, etc. Prime95 is getting
>nearly 100% of the CPU power all the time.
Again, it's normal. You'll probably notice the iteration
time at a ratio of 9/5 for the higher range (2^62 - 2^64)
of trial factors...
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