mersenneforum.org  

Go Back   mersenneforum.org > Factoring Projects > YAFU

Reply
 
Thread Tools
Old 2012-04-02, 05:29   #12
debrouxl
 
debrouxl's Avatar
 
Sep 2009

977 Posts
Default

Quote:
Is it not possible to run multiple SIQS jobs at once?
I'm not sure it is possible to run parallel SIQS jobs (it depends on whether yafu creates files in the current working directory, or in the folder containing yafu - so far, I've always used yafu with the current working directory being the folder containing yafu...), but AFAICT, it's impossible to run parallel SIQS jobs from the same folder: they will share files.
debrouxl is offline   Reply With Quote
Old 2012-04-02, 13:15   #13
bsquared
 
bsquared's Avatar
 
"Ben"
Feb 2007

1101101111002 Posts
Default

Yeah, running multiple jobs in the same folder is not supported - files will stomp on each other and yafu will probably crash. Not sure either about parallel jobs in different folders... never tried it.

Last fiddled with by bsquared on 2012-04-02 at 13:19
bsquared is offline   Reply With Quote
Old 2012-04-02, 20:01   #14
Dubslow
Basketry That Evening!
 
Dubslow's Avatar
 
"Bunslow the Bold"
Jun 2011
40<A<43 -89<O<-88

11100001101012 Posts
Default

Quote:
Originally Posted by bsquared View Post
Yeah, running multiple jobs in the same folder is not supported - files will stomp on each other and yafu will probably crash. Not sure either about parallel jobs in different folders... never tried it.
I'm pretty sure it is possible to run ECM parallel in the same folder -- at the very least it doesn't crash, and I haven't seen bad factors yet. I assume though that NFS is like SIQS in this regard?
Dubslow is offline   Reply With Quote
Old 2012-04-03, 01:59   #15
bsquared
 
bsquared's Avatar
 
"Ben"
Feb 2007

22×3×293 Posts
Default

Quote:
Originally Posted by Dubslow View Post
I'm pretty sure it is possible to run ECM parallel in the same folder -- at the very least it doesn't crash, and I haven't seen bad factors yet. I assume though that NFS is like SIQS in this regard?
Yes, although I forgot to mention that there is a command line option to specify a different savefile so that you can run more than one job in the same folder.

Code:
-qssave <filename>
There is something similar for nfs but I can't remember what offhand.
bsquared is offline   Reply With Quote
Old 2012-04-03, 04:00   #16
Dubslow
Basketry That Evening!
 
Dubslow's Avatar
 
"Bunslow the Bold"
Jun 2011
40<A<43 -89<O<-88

3×29×83 Posts
Default

Quote:
Originally Posted by bsquared View Post
Yes, although I forgot to mention that there is a command line option to specify a different savefile so that you can run more than one job in the same folder.

Code:
-qssave <filename>
There is something similar for nfs but I can't remember what offhand.
Ah, cool, thanks
Dubslow is offline   Reply With Quote
Old 2012-05-02, 01:06   #17
Dubslow
Basketry That Evening!
 
Dubslow's Avatar
 
"Bunslow the Bold"
Jun 2011
40<A<43 -89<O<-88

160658 Posts
Default NFS Sieving Resume Glitch?

http://www.mersenneforum.org/showthr...124#post298124

Batalov said it's definitely not right, and worthy of debugging.
Dubslow is offline   Reply With Quote
Old 2012-05-02, 02:09   #18
bsquared
 
bsquared's Avatar
 
"Ben"
Feb 2007

22×3×293 Posts
Default

Quote:
Originally Posted by Dubslow View Post
http://www.mersenneforum.org/showthr...124#post298124

Batalov said it's definitely not right, and worthy of debugging.
I don't quite have enough info to go on... could you email me your factor.log file, to see if there are any clues there? Also perhaps the poly file (the .job file). Were you running single threaded consistently throughout? Thanks.
bsquared is offline   Reply With Quote
Old 2012-05-02, 03:01   #19
Dubslow
Basketry That Evening!
 
Dubslow's Avatar
 
"Bunslow the Bold"
Jun 2011
40<A<43 -89<O<-88

3·29·83 Posts
Default

Quote:
Originally Posted by bsquared View Post
I don't quite have enough info to go on... could you email me your factor.log file, to see if there are any clues there? Also perhaps the poly file (the .job file). Were you running single threaded consistently throughout? Thanks.
Yes, only 1 thread. There's some more posts in the thread -- I have a specific qintsize specified after the previous C130 I did, where Batalov mentioned I'd do filtering less often if I specified that value.

factor.log has been emailed (along with a copy of nfs.job).

Notes on factor.log:
I originally ran the number with factor(), which I stopped during the nfs part; there's a second factor() with the same number, which is when I tested if doing "factor() -R" would continue the nfs part, which it didn't as you can see. Then I stopped that factor() and just used "nfs() -R" since.

nfs.job:
Code:
n: 182406447322336820309560461032830305181092209591614813564635719276441105985665782458025218176998282272069123864041991524112937073
skew: 591710.38
c0: 1528599633851371776329622734285
c1: 295884009843159380424326151
c2: -1406474204227932139749
c3: 458226357690021
c4: 3564267496
c5: 1860
Y0: -9961042320215041441491972
Y1: 39670776483097
rlim: 5900000
alim: 5900000
lpbr: 27
lpba: 27
mfbr: 54
mfba: 54
rlambda: 2.500000
alambda: 2.500000
qintsize: 200000
Dubslow is offline   Reply With Quote
Old 2012-05-02, 12:17   #20
bsquared
 
bsquared's Avatar
 
"Ben"
Feb 2007

66748 Posts
Default

Quote:
Originally Posted by Dubslow View Post
I have a specific qintsize specified after the previous C130 I did, where Batalov mentioned I'd do filtering less often if I specified that value.
This is the issue - I'm embarrased I didn't see it before when this discussion originally came up. The problem is that YAFU doesn't know about the new qintsize, so it keeps telling ggnfs to sieve much smaller ranges of special-q. When ggnfs actually goes off and sieves large ranges of special-q, you are in fact sieving the same regions multiple times. Hence the huge number of duplicates. Apologies again for the inefficient qintsize ranges that yafu currently uses - it is an easy fix but one I won't be able to get to for a couple more days. Until then, you'll just have to put up with the slightly more inefficient filtering schedule (or use a different tool...).

- b.
bsquared is offline   Reply With Quote
Old 2012-05-02, 17:32   #21
Batalov
 
Batalov's Avatar
 
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2

24×593 Posts
Default

So the resulting sieving pattern would look like stitches* - 20 millimeters forward, 12 millimeters back.

____________
*V.I.Lenin also had a similar paper called "One Step Forward Two Steps Back (The Crisis in Our Party)" :-)

Last fiddled with by Batalov on 2012-05-02 at 17:34 Reason: millimeters, millilitres - the difference is subtle
Batalov is offline   Reply With Quote
Old 2012-05-02, 18:39   #22
bsquared
 
bsquared's Avatar
 
"Ben"
Feb 2007

1101101111002 Posts
Default

Quote:
Originally Posted by Batalov View Post
So the resulting sieving pattern would look like stitches* - 20 millimeters forward, 12 millimeters back.

____________
*V.I.Lenin also had a similar paper called "One Step Forward Two Steps Back (The Crisis in Our Party)" :-)
I had thought about trying to draw some sort of ASCII cartoon to depict what was going on, but stitches describes it pretty well .
bsquared is offline   Reply With Quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Running YAFU via Aliqueit doesn't find yafu.ini EdH YAFU 8 2018-03-14 17:22
Where to report bugs Matt Software 1 2007-02-20 19:13
Possible Prime95 bugs JuanTutors Software 9 2006-09-24 21:22
RMA 1.7 beta bugs TTn 15k Search 2 2004-11-24 22:11
RMA 1.6 fixes LLR bugs! TTn 15k Search 16 2004-06-16 01:22

All times are UTC. The time now is 02:56.


Tue Jul 27 02:56:05 UTC 2021 up 3 days, 21:25, 0 users, load averages: 1.81, 1.65, 1.56

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.