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)

henryzz 2009-08-16 18:27

[quote=frmky;185808]Ok, I confess. I put it on the cluster to see where it would get overnight. The C117 GNFS took less than an hour, but since you were well into completing it yourself I couldn't bear to submit it. :ermm: Of course it got stuck on the C145. Overnight, the C145 survived 4500 curves at B1=3M. It automatically started the GNFS. If you want to do it as a team effort, I'll stop. Otherwise, I'll finish it by tomorrow.[/quote]
As you have started it feel free to finish. Do you have a way of stopping it before it starts a large gnfs in the future(and putting on replacement work) when you are not around?

frmky 2009-08-16 18:39

[QUOTE=henryzz;185812]Do you have a way of stopping it before it starts a large gnfs in the future(and putting on replacement work) when you are not around?[/QUOTE]

Sure, just not start it. :grin:

unconnected 2009-08-16 20:04

Running 2000 curves @ 11e6 on C145 - no factors found.

jrk 2009-08-17 01:01

[QUOTE=frmky;185808]Otherwise, I'll finish it by tomorrow.[/QUOTE]
You can do a c145 in one day? How big is the cluster?

frmky 2009-08-17 04:54

It's actually quite small and simple, as clusters go. It has 10 compute nodes, each with a 2.4 GHz Core 2 Quad. The grad students got a $5000 intramural grant and built it as a side project a while back. To fit it in budget, the nodes each have 4 GB memory, are diskless, and are connected by GigE.

frmky 2009-08-17 18:44

Argh! It'll take another day. Another user started a process on the cluster which did the service of killing mine. As a result, my simpleton aliquot sequence program thought the results were corrupt, deleted all relations, and stopped. I've gotta teach it to delete things ONLY if the results were successful. Anyway, I'm restarting it outside of the aliquot sequence software with higher priority.

jrk 2009-08-19 03:15

[QUOTE=frmky;186052]Argh! It'll take another day.[/QUOTE]
Was it successful today?

frmky 2009-08-20 06:34

Sorry for the delay. I'm more used to SNFS factorizations, so underestimated the number of relations needed. I also made qintsize too small. These two coupled together meant that it spent an enormous amount of time running the filtering over and over again, only to discover that there still weren't enough relations, then sieving a little more. Anyway, the linear algebra is running now, and the factors should be waiting when I get up tomorrow.

frmky 2009-08-20 16:55

prp49 factor: 9266455924974821009747268979716027836786642121659
prp96 factor: 454366919081653863050546934138139744806404198082970702649005540616077748580934679066082175220009

This bring it to step 2435 with a C155. I'm running ECM curves now up to B1=3M. Feel free to join in. :smile:

jrk 2009-08-20 17:58

[QUOTE=frmky;186721]prp49 factor: 9266455924974821009747268979716027836786642121659
prp96 factor: 454366919081653863050546934138139744806404198082970702649005540616077748580934679066082175220009

This bring it to step 2435 with a C155. I'm running ECM curves now up to B1=3M. Feel free to join in. :smile:[/QUOTE]
Nice.

Now the seq is on step 2436 with a c131.

frmky 2009-08-21 03:27

I've done 4000 curves at B1=11M on the current C132. I'm moving on to other projects, so all y'all can take over from here.


All times are UTC. The time now is 22:55.

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