mersenneforum.org  

Go Back   mersenneforum.org > Factoring Projects > Aliquot Sequences

Reply
 
Thread Tools
Old 2021-02-27, 16:14   #23
VBCurtis
 
VBCurtis's Avatar
 
"Curtis"
Feb 2005
Riverside, CA

10010010000012 Posts
Default

Jagotu-
What would help is a summary (most of this info is listed at the end of the log):

Time spent on poly select (you can sum size and root, or report them separately)
Time spent on sieving
Time spent on linear algebra
Q-range sieved (not in summary)
Number of relations needed, if the first filtering pass didn't build a matrix.

The relative timings of the 3 phases help me tune the target relations count- if the matrix step is too long, add relations and vice versa.

The Q-range helps to set Q-initial. We target a ratio of 7 to 9 for Q-final to Q-initial. If that ratio gets too big, we get extra duplicate relations and should increase starting-Q; if that ratio is too small we're missing out on speed by not sieving small Q so we should decrease starting-Q.
VBCurtis is offline   Reply With Quote
Old 2021-02-28, 12:16   #24
jagotu
 
Oct 2019

2×3×5 Posts
Default i1416 C140

Next up is a C140, which I ECM'd to t43.08 (yafu default). I won't have access to the nfs machine until next sunday, so if anyone else wants to try their luck with a bigger-ish factoring job, feel free to. If noone does I'll get to it next week.

VBCurtis:
I'll get you the numbers once I get access to the machine. I remember the initial relations weren't nearly enough, there were like 4-5 relation increases necessary. But I'll know for sure once I get back to my machine.
jagotu is offline   Reply With Quote
Old 2021-02-28, 16:32   #25
VBCurtis
 
VBCurtis's Avatar
 
"Curtis"
Feb 2005
Riverside, CA

4,673 Posts
Default

I'll knock out the C140 today.
VBCurtis is offline   Reply With Quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Aliquot sequence reservations schickel Aliquot Sequences 3401 2021-02-27 22:17
Another Aliquot Sequence site schickel Aliquot Sequences 67 2012-01-20 17:53
Aliquot sequence worker for factordb yoyo FactorDB 6 2012-01-12 20:58
YA aliquot-sequence-chasing script fivemack Aliquot Sequences 5 2009-09-28 16:40
Useful aliquot-sequence links 10metreh Aliquot Sequences 2 2009-07-31 17:43

All times are UTC. The time now is 18:53.

Sun Feb 28 18:53:48 UTC 2021 up 87 days, 15:05, 0 users, load averages: 1.30, 1.63, 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.