20080723, 04:37  #1 
Jul 2006
USA (UT5) via UK (UT)
EC_{16} Posts 
Manual reporting of nonPrime95 results to V5
As a test, I've tried reporting some LMH trailfactoring results (that were
generated using an OpenVMS version of Peter Montgomery's mfactor) to the V5 server using the manual reporting form. While the reporting of exponents with factors seems to work (in that my V5 account gets credit for the result and the factors appear in result queries), the reporting of new upper limits for exponents without factors does not. Specifically, I get the error: Error: Missing checksum. Correct the problem or email results to woltman@alum.mit.edu. The checksum can apparently only be generated by trusted software (and the security.c/.h files are missing from the V24.14 source distribution), so will nonPrime95 LMHers only method of reporting new upper limits continue to be email to GW? I send him results for ~ 5000 exponents (currently taking exponents in the range 83M84M up to 2^63) every 5 or 6 days, and the results seem to get included into the V5 server quite quickly, but my account doesn't receive any credit for them :( Clearly, it would be preferable to able to report the results directly to the V5 server. 
20080723, 11:05  #2 
Banned
"Luigi"
Aug 2002
Team Italia
2·41·59 Posts 
DId you try using version 25.6 for factoring work?
Luigi 
20080723, 14:59  #3  
P90 years forever!
Aug 2002
Yeehaw, FL
7774_{10} Posts 
Quote:
The current scheme is to protect the database from a malicious user sending in bogus factoring limits just to climb the stats rankings. 

20080723, 15:26  #4  
Jul 2006
USA (UT5) via UK (UT)
236_{10} Posts 
Quote:


20080723, 15:34  #5 
Jul 2006
USA (UT5) via UK (UT)
2^{2}×59 Posts 
No. My PCs use Prime95 and get work (both trial factoring and
LucasLehmer tests) from the server. My LMH searches take place on nonPCs and are restricted to trial factoring. This division of work makes sense for my setup. 
20080818, 11:58  #6  
"Richard B. Woods"
Aug 2002
Wisconsin USA
2^{2}·3·641 Posts 
Quote:
I nonmaliciously (but suspecting what might happen) entered some P1 results on the V5 manual results page. The results were in the form UID: ___/___, Mnnnnnnnn completed P1, B1=12345678, B2=100000000, Wc1: ________ UID: ___/___, Mnnnnnnnn completed P1, B1=12345678, B2=200000000, Wc1: ________ UID: ___/___, Mnnnnnnnn completed P1, B1=12345678, B2=300000000, Wc1: ________ ... because that's how I'd run them (with V24 Prime95). I.e., I ran P1 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 P1 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, triplecredited me for the time for Mnnnnnnnn stage 1 and for the first third of Mnnnnnnnn stage 2 time, and doublecredited 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 30timeswhat'sdeserved credit for my Mnnnnnnnn stage 1 time, and so forth ...) I'm gonna (undeservedly) rank pretty high in P1 ... in a few minutes when the next hourly report is generated. Edit: Bingo! The V5 report makes me look like a P1 fiend  up 26 in P1 rank (up 57 overall) in 1 day, apparently with over a GHzmonth thrown at each of my supposed multiple unsuccessful attempts. (Well, I am a P1 friend, but not that much.) Last fiddled with by cheesehead on 20080818 at 12:38 Reason: Report confirms my suspicions. 

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