View Single Post
Old 2008-08-18, 11:58   #6
cheesehead
 
cheesehead's Avatar
 
"Richard B. Woods"
Aug 2002
Wisconsin USA

22·3·641 Posts
Default

Quote:
Originally Posted by Prime95 View Post
The current scheme is to protect the database from a malicious user sending in bogus factoring limits just to climb the stats rankings.
That's still a problem.

I nonmaliciously (but suspecting what might happen) entered some P-1 results on the V5 manual results page. The results were in the form

UID: ___/___, Mnnnnnnnn completed P-1, B1=12345678, B2=100000000, Wc1: ________

UID: ___/___, Mnnnnnnnn completed P-1, B1=12345678, B2=200000000, Wc1: ________

UID: ___/___, Mnnnnnnnn completed P-1, B1=12345678, B2=300000000, Wc1: ________

...

because that's how I'd run them (with V24 Prime95). I.e., I ran P-1 stage 2 on exponent Mnnnnnnnn to a B2 limit of 100000000, then when that didn't find a factor I extended the stage 2 from B2=100000000 to B2=200000000. Then I ran more stage 2 to extend B2 from 200000000 to 300000000.

Problem: V5 PrimeNet credited me with CPU time for each of those P-1 results apparently as though each of them had been run from the very beginning -- i.e., first for stage 1 time to 12345678 and stage 2 time from 12345678 to 100000000, then for stage 1 time to 12345678 and stage 2 time from 12345678 to 200000000, then for stage 1 time to 12345678 and stage 2 time from 12345678 to 300000000. This, apparently, triple-credited me for the time for Mnnnnnnnn stage 1 and for the first third of Mnnnnnnnn stage 2 time, and double-credited me for the second third of Mnnnnnnnn stage 2 time.

(The above is just an example. I actually reported about 30 stepped stage 2 results for the same Mnnnnnnnn exponent, thus getting a 30-times-what's-deserved credit for my Mnnnnnnnn stage 1 time, and so forth ...)

I'm gonna (undeservedly) rank pretty high in P-1 ... in a few minutes when the next hourly report is generated.

Edit: Bingo! The V5 report makes me look like a P-1 fiend -- up 26 in P-1 rank (up 57 overall) in 1 day, apparently with over a GHz-month thrown at each of my supposed multiple unsuccessful attempts. (Well, I am a P-1 friend, but not that much.)

Last fiddled with by cheesehead on 2008-08-18 at 12:38 Reason: Report confirms my suspicions.
cheesehead is offline   Reply With Quote