mersenneforum.org

mersenneforum.org (https://www.mersenneforum.org/index.php)
-   Aliquot Sequences (https://www.mersenneforum.org/forumdisplay.php?f=90)
-   -   Reserved for MF - Sequence 4788 (https://www.mersenneforum.org/showthread.php?t=11615)

Dubslow 2012-04-27 18:12

Okay... I think it's time someone inducted me into the group of people who can ballpark rels required to build a matrix. I hit 9.036M rels, started filtering, and have since soared passed it. Now I'm at 10.478M unique rels and it's still sieving. Should I try building the matrix by hand?

bsquared 2012-04-27 18:26

No - the rels estimate is just that, an estimate. Specifically, an estimate of the first point at which might be possible to produce a matrix. It will build the matrix when it is able to and no sooner. Patience...

Batalov 2012-04-27 18:27

9M is a minimorum ballpark for "easy" 27-bit jobs. Here, 27-bit is pushed to its limit, so you may need 11-12M - just let it go. You are watching the paint dry. (Sometimes I do the same, but we really shouldn't.)

fivemack 2012-04-27 18:28

This is a 130-digit number with 27/13e; my giant database of such things suggests that 10.6 million unique relations might be enough and 11.2 million unique relations is almost sure to be. So it will be done soon. It is arguably a bit inefficient for the script to be running a filtering pass about every 80,000 relations.

bsquared 2012-04-27 18:35

[QUOTE=fivemack;297603]It is arguably a bit inefficient for the script to be running a filtering pass about every 80,000 relations.[/QUOTE]

True... I'll have to adjust those at some point.

Batalov 2012-04-27 18:39

I've usually done this size with 28-bit.
Also, a small hint (for D.): for jobs like this, a line
qintsize: 400000
(or 200000 or whatever) can be added to the .poly to override the 80000.

That is of course if the script (or the abstraction of the script which is inside yafu) is used. One may want to wean from the vanilla script around this size. Or not. :-)

Dubslow 2012-04-27 19:06

While I would love to get this working on my own, the problem is my introduction to NFS/anything-besides-GIMPS has been entirely through this forum, where 90%+ of the participants knew what they were doing before they joined, as opposed to the other way 'round (like me/LaurV). The end result is that there's no "How-to", and I have no idea how to go about learning to use the software without asking what I know is a "dumb" question to most people here. I've gotten along so far only because YAFU automates things.

I had no idea what 27-bit meant, until I connected it to that lpb* thing, but then again, I really don't have a clue about that either. I know that you use different la-sievers for different size jobs, but I have no clue what the cutoffs are, and worse, I've yet to find a -h or equiv. for even using the sievers, much the same as everything else NFS, 'cause everyone knows it already. (LaurV, I think, is much like me, except being somewhat less averse to asking the "dumb" questions :razz:) I will make an effort to learn what NFS actually does (as opposed to just learning the practicalities of using the software) thanks to the paper someone linked in the Factoring forum, but I don't really have time ATM so it will probably have to wait until summer. Is there any way I can get access to your DB, fivemack, or else is it possible for someone to summarize such things in a post/PM?

Edit: @Batalov: Yafu doesn't have a .poly, but I guessed you meant in the same file as the poly, which is .job for me. I've put it there -- we'll see if it has any effect (do I need to restart yafu first?)

Dubslow 2012-04-27 20:59

[code]matrix is 1174349 x 1174579 (345.0 MB) with weight 90222308 (76.81/col)
linear algebra at 0.1%, ETA 4h17m1174579 dimensions (0.1%, ETA 4h17m)
checkpointing every 280000 dimensions579 dimensions (0.2%, ETA 4h20m)
[/code]
ETA's actually 4hr even, but I can't copy the last line :unsure:
Edit: Not quite an hour later and it's 33% through and ETA is 2.25 hrs... :huh: *shrug*

bsquared 2012-04-27 21:20

[QUOTE=Dubslow;297618]
Edit: @Batalov: Yafu doesn't have a .poly, but I guessed you meant in the same file as the poly, which is .job for me. I've put it there -- we'll see if it has any effect (do I need to restart yafu first?)[/QUOTE]

Should not need to restart, the ggnfs sievers will see the new file the next time they are invoked. Looks like it's moot now, though.

fivemack 2012-04-28 00:01

1 Attachment(s)
[QUOTE=Dubslow;297618]Is there any way I can get access to your DB, fivemack, or else is it possible for someone to summarize such things in a post/PM?[/QUOTE]

[url]http://www.mersenneforum.org/showpost.php?p=189863&postcount=7[/url] contains an old version in gnumeric format; I've attached the current version in Excel 2007 for Mac format.

Dubslow 2012-04-28 00:06

Stupid question, incoming!
 
[QUOTE=fivemack;297675][url]http://www.mersenneforum.org/showpost.php?p=189863&postcount=7[/url] contains an old version in gnumeric format; I've attached the current version in Excel 2007 for Mac format.[/QUOTE]

Cool, thanks.

Edit: Um... I have no idea how to view XML files. Just double clicking opened the source in Chrome; Libre Office just opened the source in Writer (i.e. Word), even if I tried to open them from inside Calc. ...How do I view them in a readable fashion? Or am I stuck with the source? I did Google this, and I've figured out that XML contains no styling of its own, and that ODF is just compressed XML, but... that didn't really help.


All times are UTC. The time now is 23:15.

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