mersenneforum.org  

Go Back   mersenneforum.org > Great Internet Mersenne Prime Search > Software

Reply
 
Thread Tools
Old 2017-03-04, 01:38   #12
wombatman
I moo ablest echo power!
 
wombatman's Avatar
 
May 2013

32·193 Posts
Default

Quote:
Originally Posted by ET_ View Post
Keep me informed about it :-) I suppose you could get a 2.5x speedup from using the Arm8 code, the FPUs and the 64bits.
Your estimation was pretty good! The exact number jumps around quite a bit, but for the same input, sr1sieve compiled on the Gentoo 64-bit image works at about 11-13M p/sec. It actually started at about 16M, but has dropped a bit. I'll play around with some things like using -q and specifying the L1 and L2 caches to see if that helps any.

On a related note, I'm getting a strange error from the GGNFS sievers. I got the 32-bit versions successfully built on the Gentoo image, and they work fine when run with the rsa100 test file using factLat.pl. If I try to run them with the parameters and command line from the team sieve here, I get an immediate "Aborted" with no other apparent error message. Running the exact same command line on the 32-bit Raspbian-built GGNFS sievers worked flawlessly.

Without an error message, I'm not even sure where to begin.

Last fiddled with by wombatman on 2017-03-04 at 01:38
wombatman is offline   Reply With Quote
Old 2017-03-04, 04:04   #13
wombatman
I moo ablest echo power!
 
wombatman's Avatar
 
May 2013

32·193 Posts
Default

Got it figured out. The .poly file was very slightly malformed.
wombatman is offline   Reply With Quote
Old 2017-03-04, 10:44   #14
henryzz
Just call me Henry
 
henryzz's Avatar
 
"David"
Sep 2007
Cambridge (GMT)

161D16 Posts
Default

At least use the factmsieve.pl script rather than factorlat.pl. The tools used by factlat are only suitable for very small numbers. Either yafu or factmsieve.py are the recommended tools for gnfs currently.
henryzz is offline   Reply With Quote
Old 2017-03-04, 16:21   #15
wombatman
I moo ablest echo power!
 
wombatman's Avatar
 
May 2013

32·193 Posts
Default

Oh, I'm well aware, and they're what I typically use. I just ran that one to do a quick test. I've since run the lasieve 14e binary by itself without issue.
wombatman is offline   Reply With Quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
sr1sieve with work files? masser Conjectures 'R Us 1 2017-12-28 17:43
32-bit of sr1sieve and sr2sieve for Win pepi37 Software 5 2013-08-09 22:31
Building gcc 4.4.0 CRGreathouse Software 1 2009-07-07 22:25
sr1sieve and big P barcode Software 5 2007-12-27 04:05
sr1sieve 1.2.0 arminius Riesel Prime Search 14 2007-12-02 22:53

All times are UTC. The time now is 18:36.

Thu Jun 4 18:36:39 UTC 2020 up 71 days, 16:09, 2 users, load averages: 1.84, 1.97, 1.91

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