mersenneforum.org  

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

Closed Thread
 
Thread Tools
Old 2003-09-23, 04:07   #1
GP2
 
GP2's Avatar
 
Sep 2003

22·3·5·43 Posts
Exclamation A brief description of data files

Data for the GIMPS project can be found in two different places:

At the bottom of the Primenet server page you will find links to two files:

The above files are updated hourly.


At the bottom of the GIMPS search status page you will find links to several files:

These files are unzipped to produce LUCAS_V.TXT, BAD, HRF3.TXT, FACTORS.CMP, NOFACTOR.CMP, PMINUS1.TXT

FACTORS.CMP and NOFACTOR.CMP are not directly usable. Instead, you must download decomp.zip and run it:

decomp -f 1 100000000
decomp -n 1 100000000

to produce the files "factors" and "nofactor" respectively. These files are very large.

There are also two other files:

The above files are updated more or less weekly.


A broadband (high-speed) connection is recommended for downloading these files.

Note: if you download the files and then later wish to download updated versions, you may need to clear your browser cache first. Otherwise your browser may do a quick fake "re-download" of the cached version.

The purpose and contents of these files will be described in the following message(s).

Last fiddled with by GP2 on 2003-10-24 at 04:43
GP2 is offline  
Old 2003-10-13, 14:31   #2
GP2
 
GP2's Avatar
 
Sep 2003

22×3×5×43 Posts
Default Re: A brief description of data files

Quote:
Originally posted by GP2
These files are in a fixed-width format that is not necessarily convenient for data manipulation, and include a lot of non-data lines (header, footer, column headings).

It is convenient to convert these files into comma-separated form similar to BAD, LUCAS_V.TXT and HRF3.TXT.

It's also convenient to split them into separate files for factoring and for LL. Thus we end up with:

status_f.txt
status_l.txt
cleared_f.txt
cleared_l.txt


Some Perl commands and scripts can accomplish the above (see attachment). Perl is useful because it's available for both Linux and Windows.

Edit: modified to handle the rare case of DF in status.txt in old historical files.
Attached Files
File Type: zip sc_comma.zip (1.8 KB, 179 views)

Last fiddled with by GP2 on 2003-11-05 at 04:34
GP2 is offline  
Closed Thread

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Searching data from npg files ( Primegrid) pepi37 Linux 5 2016-06-29 11:11
Project Description Joe O Sierpinski/Riesel Base 5 3 2016-03-11 21:49
Archived data files... Xyzzy Data 22 2004-05-25 03:04
Do you have old stored versions of data files? GP2 Data 0 2003-11-04 20:13
Cleared exponents that never made it into data files GP2 Data 14 2003-09-16 03:07

All times are UTC. The time now is 04:19.

Mon Sep 21 04:19:35 UTC 2020 up 11 days, 1:30, 0 users, load averages: 1.93, 2.04, 1.81

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.