mersenneforum.org  

Go Back   mersenneforum.org > Factoring Projects > Aliquot Sequences

Reply
 
Thread Tools
Old 2015-10-24, 11:39   #188
swellman
 
swellman's Avatar
 
Jun 2012

296010 Posts
Default

Just over 1200 additional curves so far with no factor found. Full t50 should finish by Sunday night. Or I can shift to B1=110M for 1-2k additional curves.

Or maybe it's time to abandon ECM? Your call. For now I'll just carry on towards t50 unless you say otherwise.

- Sean
swellman is offline   Reply With Quote
Old 2015-10-24, 17:22   #189
VBCurtis
 
VBCurtis's Avatar
 
"Curtis"
Feb 2005
Riverside, CA

33×173 Posts
Default

How about a couple hundred at 110M, and call it good tonight? I'll start NFS Sun morning USA time.
Edit- anything above half a T50 is sufficient. I didn't calculate how much has been done; if we're past 0.5*T50, no more is needed.

Last fiddled with by VBCurtis on 2015-10-24 at 17:28
VBCurtis is offline   Reply With Quote
Old 2015-10-24, 20:25   #190
swellman
 
swellman's Avatar
 
Jun 2012

1011100100002 Posts
Default

So far, ECM has run ~2300 additional curves @B1=43M. In a couple of hours I will kick it up to B1=110M and let it run overnight. I'm on the east coast and have an early start tomorrow, so I can post yea or nay on any factors being found before you start NFS.

Does this work for you? I believe that will push it to well past 0.5t50 and provide sufficient due diligence to avoid a blatant ECM miss.

Last fiddled with by swellman on 2015-10-24 at 20:31
swellman is offline   Reply With Quote
Old 2015-10-24, 20:28   #191
VBCurtis
 
VBCurtis's Avatar
 
"Curtis"
Feb 2005
Riverside, CA

33·173 Posts
Default

That's terrific, thanks for the extra effort. I'll test-sieve today, and will be ready to fire NFS when I wake up tomorrow.

I haven't previously tried running my full desktop on a single NFS task. Going to try 12-threaded sieving on a 6-core i7. Hopefully, I'll have factors in under a week!
VBCurtis is offline   Reply With Quote
Old 2015-10-24, 20:39   #192
swellman
 
swellman's Avatar
 
Jun 2012

24×5×37 Posts
Default

Quote:
Originally Posted by VBCurtis View Post
I haven't previously tried running my full desktop on a single NFS task. Going to try 12-threaded sieving on a 6-core i7. Hopefully, I'll have factors in under a week!
Want!
swellman is offline   Reply With Quote
Old 2015-10-24, 22:07   #193
VBCurtis
 
VBCurtis's Avatar
 
"Curtis"
Feb 2005
Riverside, CA

10010001111112 Posts
Default

Rich's 2nd poly sieves about 15% faster than the first, with yield also higher.
I used alim=rlim=33M, 31-bit LP, 2 large primes per side.
I test-sieved at alim/6, alim/3, alim/2, alim, a range of 1500q each (long enough for sec/rel to stabilize to two sigfigs)

Yield was bad at alim/6, so I will start the run at alim/4 (and with alim 35M instead of 33).
Yields at the other test points were roughly the same, around 4.5. For 140M raw relations, that's a range of about 32Mq, roughly q = 9M to 41M.
VBCurtis is offline   Reply With Quote
Old 2015-10-24, 23:36   #194
swellman
 
swellman's Avatar
 
Jun 2012

B9016 Posts
Default

Ran ECM up to 2680 additional curves @B1=43M, plus the 1550 curves run earlier = 4230 curves, or ~55% of t50.

Now running more curves with B1=110M. Getting throughput of ~66 curves/hr. Should have >700 curves by morning. I'll post the results about 6 AM EDT.
swellman is offline   Reply With Quote
Old 2015-10-25, 10:23   #195
swellman
 
swellman's Avatar
 
Jun 2012

24·5·37 Posts
Default

Ran another 760 curves @B1=110M with nothing found. Terminated ECM.

It belongs to NFS now. Happy factoring!
swellman is offline   Reply With Quote
Old 2015-10-28, 12:35   #196
swellman
 
swellman's Avatar
 
Jun 2012

24×5×37 Posts
Default

Quote:
Originally Posted by VBCurtis View Post
That's terrific, thanks for the extra effort. I'll test-sieve today, and will be ready to fire NFS when I wake up tomorrow.

I haven't previously tried running my full desktop on a single NFS task. Going to try 12-threaded sieving on a 6-core i7. Hopefully, I'll have factors in under a week!
How is the speed looking? Just curious about that "12-headed monster".
swellman is offline   Reply With Quote
Old 2015-10-28, 22:01   #197
VBCurtis
 
VBCurtis's Avatar
 
"Curtis"
Feb 2005
Riverside, CA

467110 Posts
Default

79 hrs wallclock time, 78.3M relations of estimated 143M raw rels needed. If a matrix builds the first try, that'll make nearly exactly 6 days sieve time.

There is a single thread of srsieve running, so NFS has 12/13ths of the CPU. I doubt the matrix will solve in under 24 hr, so it will take me more than a week to factor. :-(

Last fiddled with by VBCurtis on 2015-10-28 at 22:02
VBCurtis is offline   Reply With Quote
Old 2015-10-29, 02:13   #198
swellman
 
swellman's Avatar
 
Jun 2012

24·5·37 Posts
Default

8-9 days for a 157 GNFS? Not too shabby for a single machine! Let's hope this sequence starts moving downward.

I'm willing to throw some more ECM into the mix if needed later. Just call for help here. Good luck!
swellman is offline   Reply With Quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Reserved for MF - Sequence 3366 RichD Aliquot Sequences 468 2021-01-27 01:16
Reserved for MF - Sequence 4788 schickel Aliquot Sequences 2934 2021-01-07 18:52
Reserved for MF - Sequence 276 kar_bon Aliquot Sequences 127 2020-12-17 10:05
Team Sieve #37: 3408:i1287 RichD Aliquot Sequences 14 2013-08-02 17:02
80M to 64 bits ... but not really reserved petrw1 Lone Mersenne Hunters 82 2010-01-11 01:57

All times are UTC. The time now is 22:42.

Fri Feb 26 22:42:05 UTC 2021 up 85 days, 18:53, 0 users, load averages: 2.82, 2.78, 2.77

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.