mersenneforum.org  

Go Back   mersenneforum.org > Prime Search Projects > Sierpinski/Riesel Base 5

Reply
 
Thread Tools
Old 2007-06-13, 20:44   #1
jasong
 
jasong's Avatar
 
"Jason Goatcher"
Mar 2005

5×701 Posts
Default Sieve Check - stats

I redid 5150-5200, like I was asked. When I turned in the factors online, it said that they were already known, every single one of them. No big deal about the wasted time, just a heads-up. :)
jasong is offline   Reply With Quote
Old 2007-06-13, 22:32   #2
masser
 
masser's Avatar
 
Jul 2003
wear a mask

138510 Posts
Default

hmmm.... I will look into this further. My sincerest apologies about the wasted time and effort.
masser is online now   Reply With Quote
Old 2007-06-13, 22:43   #3
geoff
 
geoff's Avatar
 
Mar 2003
New Zealand

13·89 Posts
Default

I've noticed a few times that the factors submission form says all of my factors are already known, when I'm pretty sure I haven't submitted them before.
geoff is offline   Reply With Quote
Old 2007-06-14, 03:18   #4
masser
 
masser's Avatar
 
Jul 2003
wear a mask

5·277 Posts
Default

Here is what I suspect happened.

1. jasong originally submitted the factors for the range 5150-5200.

2. before the dat file was updated to reflect jasong's submission, I downloaded it and did some p-1 factoring on some low n values. I found a factor in the 5150-5200 range.

3. I submitted the found factor to the factor submission page - it was recognized as a new factor - maybe incorrectly?

4. I looked through the files at base5 DOT factors AT yahoo DOT com and couldn't find jasong's factors, so I emailed him; he had lost the factor files due to hardware issues, so he agreed to redo the range.

5. His resubmission resulted in no new factors - so they must have been there all along.


Three things seem to have contributed to this muck-up.

1. I wasn't patient/careful enough when squaring p-1 factoring with old sieving results.

2. Some issues with the stats submission pages - the resulting messages are not always consistent with the sieve stats page; I'm not sure this can be fixed.

3. jasong's unfortunate hardware issues.

I will be more careful in the future....
masser is online now   Reply With Quote
Old 2007-06-14, 07:08   #5
ltd
 
ltd's Avatar
 
Apr 2003

11000001002 Posts
Default

Quote:
2. Some issues with the stats submission pages - the resulting messages are not always consistent with the sieve stats page; I'm not sure this can be fixed.
So far all factors reported as duplicate from my own tests ( most done on the PSP submission) were real duplicates.

I will implement some more internal reporting next weekend. So if you have an unexpected duplicate report starting from monday on please send me the factor file by mail so i can check what happened. ( So far i can not see how such an error could occur as the check for duplicates searches for an exact match for k,n and complete factor)

I don't know if this can also happen with srsieve but on jjsieve and proth_sieve for example it is possible to stop the client between two savepoint which can lead to a factor found twice.

Cheers,

Lars
ltd is offline   Reply With Quote
Old 2008-01-24, 00:30   #6
mdettweiler
A Sunny Moo
 
mdettweiler's Avatar
 
Aug 2007
USA (GMT-5)

3·2,083 Posts
Default

30,000-30,005 complete, 23 factors found (expected 22.87). Factors submitted to sieve import.

One thing I found odd, though: When I submitted my factors, I got the following message:
Input contained 23 total lines.
Input contained 23 valid lines.
Input contained 23 valid lines from SR5 k values.
Input contained 0 invalid lines.
Input contained 0 lines with unknown K.
Input contained 1 lines with already known factor.
Input contained 0 wrong factors.

Where would that "already known factor" have come from?
mdettweiler is offline   Reply With Quote
Old 2008-01-24, 08:06   #7
Xentar
 
Xentar's Avatar
 
Sep 2006

2×3×31 Posts
Default

Maybe a factor, that was found by another user, but is still in the sieve file?
Xentar is offline   Reply With Quote
Old 2008-01-24, 15:57   #8
mdettweiler
A Sunny Moo
 
mdettweiler's Avatar
 
Aug 2007
USA (GMT-5)

141518 Posts
Default

Quote:
Originally Posted by Xentar View Post
Maybe a factor, that was found by another user, but is still in the sieve file?
But doesn't it only give that message if the exact same factor was found? I think someone said on here once that if a second, but different, factor is found for a candidate, then the sieve import page won't make any noise about it, but you won't get any points awarded.
mdettweiler is offline   Reply With Quote
Old 2008-01-24, 19:12   #9
masser
 
masser's Avatar
 
Jul 2003
wear a mask

5×277 Posts
Default

Anon,

Could you post the list of factors here?
masser is online now   Reply With Quote
Old 2008-01-25, 03:41   #10
mdettweiler
A Sunny Moo
 
mdettweiler's Avatar
 
Aug 2007
USA (GMT-5)

141518 Posts
Default

Quote:
Originally Posted by masser View Post
Anon,

Could you post the list of factors here?
Sorry, I deleted the factors file as soon as they were inserted successfully.

Would you be able to see them in a log somewhere?
mdettweiler is offline   Reply With Quote
Old 2008-01-25, 11:36   #11
thommy
 
thommy's Avatar
 
Dec 2006

1000012 Posts
Default

Probably someone tested sievespeed or something in that range, found a factor. And submitted it.
thommy is offline   Reply With Quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Advantage of lattice sieve over line sieve binu Factoring 3 2013-04-13 16:32
Error in stats (Top LL Double-Check Producer) moebius PrimeNet 5 2010-11-09 23:19
CSVs for stats available + New combined stats opyrt Prime Sierpinski Project 3 2010-05-31 08:13
First check and double check llrnet servers. opyrt Prime Sierpinski Project 3 2009-01-02 01:50
Double-check check? M0CZY Software 15 2008-10-30 14:20

All times are UTC. The time now is 05:25.

Wed Aug 5 05:25:20 UTC 2020 up 19 days, 1:12, 1 user, load averages: 1.12, 1.22, 1.24

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.