mersenneforum.org

mersenneforum.org (https://www.mersenneforum.org/index.php)
-   Aliquot Sequences (https://www.mersenneforum.org/forumdisplay.php?f=90)
-   -   Too many merge attempts etc. (https://www.mersenneforum.org/showthread.php?t=11794)

hhh 2009-04-28 07:10

Too many merge attempts etc.
 
Dear friends,

the "too many merge attempts"-error showed up at some [URL="http://factorization.ath.cx/search.php?id=31962963"]c104[/URL] of mine. I tried to fiddle aroud a bit, with the sole success to replace it by some "the matrix must have more coloums than rows" (or vice versa) error. Here are my options, I guess:

- I upload thezipped folder to some volunteer who does the postprocessing for me
- You help me to get out of this mess
- I restart sieving, with perhaps slightly different parameters
- Somebody else does this number from scratch.

This is the order of my preference, also. You decide, though.

Cheers, H.

schickel 2009-04-28 07:16

[QUOTE=hhh;171260]Dear friends,

the "too many merge attempts"-error showed up at some [URL="http://factorization.ath.cx/search.php?id=31962963"]c104[/URL] of mine. I tried to fiddle aroud a bit, with the sole success to replace it by some "the matrix must have more coloums than rows" (or vice versa) error. Here are my options, I guess:

- I upload thezipped folder to some volunteer who does the postprocessing for me
- You help me to get out of this mess
- I restart sieving, with perhaps slightly different parameters
- Somebody else does this number from scratch.

This is the order of my preference, also. You decide, though.

Cheers, H.[/QUOTE]I'd be willing to take a stab at it no one else does. I've got one more day at work, so I couldn't really concentrate on it until Wednesday....

hhh 2009-04-28 07:39

[QUOTE=schickel;171261]I'd be willing to take a stab at it no one else does. I've got one more day at work, so I couldn't really concentrate on it until Wednesday....[/QUOTE]

You can give me some of your work in exchange... and I'd need some link for the upload. H.

schickel 2009-04-28 07:57

[QUOTE=hhh;171264]You can give me some of your work in exchange... and I'd need some link for the upload. H.[/QUOTE]How big is the dataset? I don't have anything set up right now, but I could put an FTP server on one of my big rigs.....

schickel 2009-04-28 09:58

[QUOTE=hhh;171264]You can give me some of your work in exchange... and I'd need some link for the upload. H.[/QUOTE]PM sent.

mdettweiler 2009-04-28 14:33

[quote=schickel;171267]How big is the dataset? I don't have anything set up right now, but I could put an FTP server on one of my big rigs.....[/quote]
If you guys want, you can use the FTP server that I set up a while back for the team sieves. (Instructions for uploading can be found in the latest team sieve thread; the only difference is that it would probably be better to plop the files in the root directory of the FTP server rather than in the /c136-relations folder to avoid confusion with the team sieve files.)

schickel 2009-04-28 18:14

[QUOTE=mdettweiler;171307]If you guys want, you can use the FTP server that I set up a while back for the team sieves. (Instructions for uploading can be found in the latest team sieve thread; the only difference is that it would probably be better to plop the files in the root directory of the FTP server rather than in the /c136-relations folder to avoid confusion with the team sieve files.)[/QUOTE]Thanks for the offer, but if we can get a direct FTP to my side working, then we only have to transfer everything once....no sense wasting more electrons than needed.

henryzz 2009-04-28 18:41

[quote=Batalov;170156]As the number of collected relations grows, there are four "zones":
1) far too few relations; then -nc1 doesn't produce cycles and asks for more relns => Sieve some more;
2) [SIZE=1](rarely visited; you are here!)[/SIZE] almost enough relations; -nc1 makes cycles, -nc2 builds a matrix, cleans it up and then the matrix is not useable => Sieve some more;
3) convergent zone; here's some freedom of choice: with more relns, the matrix gets better and better, but it is well established that you generally do not save any overall time anymore => Build the matrix and do -nc2, -nc3
4) far too many relations => trim free relations from the end of .dat file (these are short lines), then trim some more, goto zone 3). But not too much or you will end up in zones 1-2)[/quote]
does this help?

Batalov 2009-04-28 19:25

You are likely in zone 4. So you want to trim, but not too much ...as per the above spell.

hhh 2009-04-29 06:50

Everything submitted (I hope). Many thanks for the help, Frank!

Thank's for the advices; that's what I thought, only that I didn't really know what to do. As for how I got there, I have no idea, because I started filtering in zone 1, and added sieving according to the standard parameters.

Anyway, soon this problem will be solved, I hope.

H.

schickel 2009-04-29 08:01

[QUOTE=hhh;171483]Everything submitted (I hope). Many thanks for the help, Frank!

Thank's for the advices; that's what I thought, only that I didn't really know what to do. As for how I got there, I have no idea, because I started filtering in zone 1, and added sieving according to the standard parameters.

Anyway, soon this problem will be solved, I hope.

H.[/QUOTE]Yes, I've got everything. I'll take a look at it, but I can't promise intense study until tomorrow AM.....


All times are UTC. The time now is 11:46.

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