Re: Mersenne: Expected completion date

[George Woltman]

Hi,

At 12:33 PM 9/20/99 +0200, Shot wrote:
>At 8178600th iteration I checked the status window, and it showed 
>that Prime95 will be working on this for the next 5 hrs 25 mins...
>
>So, it seemed like 10 mins 10 secs later I will be given the naked 
>truth about M8180017. That's like 5 hrs 14 mins 50 secs earlier than 
>Prime95 thought...

Prime95 updates this information on a program restart (as you found out)
and every 65536 iterations.  I've fixed it to update this every 128
iterations.

The 18 vs. 24 hours a day info will cause the estimate to be off by 25%
as prime95 assumes the 6 off hours are distributed uniformly throughout
the day.

Keep those bug reports coming,
George

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Mersenne: Expected completion date

[Shot]

Hi.

I just finished my first LL test. I know I shouldn't broadcast this 
to the list, but I couldn't resist; so, here goes...

M8180017 is NOT prime!!! ;)

Now, back to reality...

At 8178600th iteration I checked the status window, and it showed 
that Prime95 will be working on this for the next 5 hrs 25 mins...

So I took my calculator, and asked him: (8180017-8178600)*0.430=?

He said something about his aching buttons, but finally answered: 
609,31

So, it seemed like 10 mins 10 secs later I will be given the naked 
truth about M8180017. That's like 5 hrs 14 mins 50 secs earlier than 
Prime95 thought...

But when I restarted Prime95, it showed the right end-time (10 mins). 

So, my guess is, this calculations are based on some data saved when 
Prime95 closes - could those data be saved every time the status 
window is opened? That would lead to the right calculations, right?

Thanks for your time,
-- Shot

PS: On second thought - maybe it was because Prime95 was told it will 
be running 18 hrs/day, and it was 24 hrs/day?
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