mersenneforum.org  

Go Back   mersenneforum.org > Great Internet Mersenne Prime Search > PrimeNet

Reply
 
Thread Tools
Old 2009-06-02, 22:33   #1
rudi_m
 
rudi_m's Avatar
 
Jul 2005

2·7·13 Posts
Default wrong count of assigned TF?

Hi,

I wonder about Work Distribution Map, range 87M-88M.
It shows 9 exponents assignend to TF but when I check that range completely I see only 8 assigned exponents.
Maybe this is a bug?

cu,
Rudi
rudi_m is offline   Reply With Quote
Old 2009-06-03, 00:03   #2
Uncwilly
6809 > 6502
 
Uncwilly's Avatar
 
"""""""""""""""""""
Aug 2003
101×103 Posts

224068 Posts
Default

They are probably hiding a newly discovered prime there.
Uncwilly is offline   Reply With Quote
Old 2009-06-03, 06:24   #3
cheesehead
 
cheesehead's Avatar
 
"Richard B. Woods"
Aug 2002
Wisconsin USA

22×3×641 Posts
Default

Quote:
Originally Posted by rudi_m View Post
when I check that range completely I see only 8 assigned exponents.
Using "Exponent Status", I checked the first 500 exponents after 87000000 (through 87009029). It showed the 8 TF assignments from 87000127 through 87000413.

How did you check the rest of the whole range from 87M to 88M? I know only the "Exponent Status" page, which shows no more than 100 exponents at a time -- is there some other way I'm missing? (or are you really, really patient?)

Last fiddled with by cheesehead on 2009-06-03 at 06:32
cheesehead is offline   Reply With Quote
Old 2009-06-03, 09:26   #4
rudi_m
 
rudi_m's Avatar
 
Jul 2005

18210 Posts
Default

Quote:
Originally Posted by cheesehead View Post
How did you check the rest of the whole range from 87M to 88M? I know only the "Exponent Status" page, which shows no more than 100 exponents at a time -- is there some other way I'm missing? (or are you really, really patient?)
I wrote a little script to download bigger exponent status ranges.
But you can see the Problem also in two other ways:
1. using http://www.mersenne.org/report_factoring_effort/
to download simple text report of 87M-88M (factored range 0-999) including as well as excluding currently assigned exponents.
Then diff both texts.
2. checking http://www.mersenne.org/primenet/
There are 24012 non-LLs but 24004 available for TF and 9 assigned TFs (=24013)

I also saw inconsistent things on other ranges. Just posted this one as example to report a possible bug.

Maybe the problem has something to do with 87000119 which I trial factored to 70bit 2 days ago. I think this one still counts to the assigned TFs.
rudi_m is offline   Reply With Quote
Old 2009-06-08, 12:57   #5
garo
 
garo's Avatar
 
Aug 2002
Termonfeckin, IE

276310 Posts
Default

George has said before that the server scripts that calculate these numbers can be buggy because exponents may move around columns while the numbers are being computed. That being said I have seen consistent errors of "off by one or two" for as long as I can remember.
garo is offline   Reply With Quote
Old 2009-06-08, 16:49   #6
cheesehead
 
cheesehead's Avatar
 
"Richard B. Woods"
Aug 2002
Wisconsin USA

22×3×641 Posts
Default

Quote:
Originally Posted by garo View Post
George has said before that the server scripts that calculate these numbers can be buggy because exponents may move around columns while the numbers are being computed.
Oh, yeah -- the report-generator doesn't (can't afford to!) lock the database against changes while it's doing its totaling. There could be a mechanism for segregating new changes for a while as the report generator works (in effect, fixing a database image as of a certain time, when the report started, until it was finished), but that's obviously not being done here.
cheesehead is offline   Reply With Quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Is Moore's Law wrong, or is it wrong-headed (6th time around) jasong jasong 12 2016-05-27 11:01
Wrong count at the ECM status page MatWur-S530113 PrimeNet 7 2014-09-08 23:57
Looks like it's down for the count bcp19 Hardware 12 2013-04-26 13:52
Dice Count davar55 Puzzles 9 2008-07-24 12:01
Can't figure out how to count in DOS. jasong Software 2 2006-07-22 21:49

All times are UTC. The time now is 09:05.

Sun Apr 11 09:05:45 UTC 2021 up 3 days, 3:46, 1 user, load averages: 2.26, 2.22, 2.25

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, 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.