mersenneforum.org  

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

Reply
 
Thread Tools
Old 2020-07-30, 04:39   #188
preda
 
preda's Avatar
 
"Mihai Preda"
Apr 2015

7×173 Posts
Default

Quote:
Originally Posted by Prime95 View Post
I did not implement GEC for CERT work. I did not think it was worth the bother. What I did implement was shift count. If one CERT fails another is run with a different shift count.
Alternativelly to using the shift count you could vary the "random" used to generate the CERT task.
preda is online now   Reply With Quote
Old 2020-07-31, 00:28   #189
Uncwilly
6809 > 6502
 
Uncwilly's Avatar
 
"""""""""""""""""""
Aug 2003
101×103 Posts

22·5·431 Posts
Default

Minor issue. When running a cert, Prime95 appears to not report calculation progress. Have had it running 2 certs with no updates in greater than 14 hours.
Uncwilly is offline   Reply With Quote
Old 2020-07-31, 02:39   #190
Prime95
P90 years forever!
 
Prime95's Avatar
 
Aug 2002
Yeehaw, FL

2×3×1,193 Posts
Default

Quote:
Originally Posted by Uncwilly View Post
Minor issue. When running a cert, Prime95 appears to not report calculation progress. Have had it running 2 certs with no updates in greater than 14 hours.
What is OutputIterations set to in prime.txt?
Prime95 is offline   Reply With Quote
Old 2020-07-31, 03:50   #191
Uncwilly
6809 > 6502
 
Uncwilly's Avatar
 
"""""""""""""""""""
Aug 2003
101×103 Posts

22×5×431 Posts
Default

OutputIterations=500000

Quote:
[Jul 29 12:55] Iteration: 1500000 / 8xxxxxx [17.45%], ms/iter: 5.919, ETA: 11:39:47
[Jul 29 13:42] Iteration: 2000000 / 8xxxxxx [23.27%], ms/iter: 5.594, ETA: 10:14:47
vs
Quote:
[Jul 28 07:17] Stopping PRP test of M8xxxxxx/yyyyyyyyy at iteration 3375128 [39.28%]
[Jul 28 07:17] Starting certification of M97xxxxxx using Pentium4 FFT length 5376K, Pass1=896, Pass2=6K, clm=4, 4 threads
[Jul 28 20:32] Stopping certification of M97xxxxxx at iteration 324739 [85.47%]
[Jul 28 20:32] Resuming certification of M97xxxxxx using Pentium4 FFT length 5376K, Pass1=896, Pass2=6K, clm=4, 4 threads
[Jul 28 22:50] M97xxxxxx certification hash value BigLongHexValue
Uncwilly is offline   Reply With Quote
Old 2020-07-31, 04:00   #192
retina
Undefined
 
retina's Avatar
 
"The unspeakable one"
Jun 2006
My evil lair

573410 Posts
Default

Quote:
Originally Posted by Uncwilly View Post
OutputIterations=500000
Everything looks normal. You haven't done 500k iterations on the cert yet.

----------------------------------------------------------------

But this reminds me. Can that setting be set to seconds instead of iterations? Say:
OutputIterations=3600s
Iteration times are variable, but seconds ain't, so 3600 seconds (1 hour) means regularly timed updates no matter how large or small the exponent is.

Last fiddled with by retina on 2020-07-31 at 04:01
retina is offline   Reply With Quote
Old 2020-07-31, 04:08   #193
Aramis Wyler
 
Aramis Wyler's Avatar
 
"Bill Staffen"
Jan 2013
Pittsburgh, PA, USA

18416 Posts
Default

Quote:
Originally Posted by retina View Post
Everything looks normal. You haven't done 500k iterations on the cert yet.
Never will, either, if 324739 iterations is 85.47% done.

I second the idea of being able to produce it in seconds vs iterations.
Aramis Wyler is offline   Reply With Quote
Old 2020-07-31, 04:09   #194
Uncwilly
6809 > 6502
 
Uncwilly's Avatar
 
"""""""""""""""""""
Aug 2003
101×103 Posts

22·5·431 Posts
Default

Quote:
Originally Posted by retina View Post
Iteration times are variable, but seconds ain't, so 3600 seconds (1 hour) means regularly timed updates no matter how large or small the exponent is.
Test type can make it variable too.

I realised that the per iteration output was normal as I was composing my previous message. I posted it anyway just so that it was clear that all was normal.
Uncwilly is offline   Reply With Quote
Old 2020-07-31, 09:30   #195
henryzz
Just call me Henry
 
henryzz's Avatar
 
"David"
Sep 2007
Cambridge (GMT/BST)

2·2,861 Posts
Default

What system are you using that is running Pentium 4 ffts?
henryzz is offline   Reply With Quote
Old 2020-07-31, 12:46   #196
Uncwilly
6809 > 6502
 
Uncwilly's Avatar
 
"""""""""""""""""""
Aug 2003
101×103 Posts

206548 Posts
Default

It is a laptop. It was a cheap refurb.

The 1.4 GHz days credit is not nearly in proportion to the actual calc invested.
4 cores x 1.6 Ghz x 3/4 days =/= 1.4 Ghz/days
Attached Thumbnails
Click image for larger version

Name:	CPU.png
Views:	26
Size:	10.0 KB
ID:	22931  

Last fiddled with by Uncwilly on 2020-08-01 at 00:45 Reason: Credit
Uncwilly is offline   Reply With Quote
Old 2020-07-31, 14:32   #197
Aramis Wyler
 
Aramis Wyler's Avatar
 
"Bill Staffen"
Jan 2013
Pittsburgh, PA, USA

1100001002 Posts
Default

upgraded from version 29 to 301b1 despite having between 2 and 10 days of work in the queue for 4 cores, to see how it was dealing with regular cases.

This was at 04:24 UTC.

Was immediately issued a cert, and it was assigned to core 1 which had about 10 more days of work on it. Even more surprising: a little bit later when prime95 went to communicate to the server, it shut down the threads, started working on the cert, and queued the DC I was doing behind it.

Got a message immediately following the "Starting cert.." message:
MD6 of downloaded residue does not match
At which point I realized that it had pulled through the GPU72 Proxy. Crap.

It finished the cert this morning and then went back to doing the work it had been previously assigned. Another thread was assigned PRP work because it only had 2 days of work left on it. The new PRP work was queued appropriately and will start tommorow.
Aramis Wyler is offline   Reply With Quote
Old 2020-07-31, 15:24   #198
Prime95
P90 years forever!
 
Prime95's Avatar
 
Aug 2002
Yeehaw, FL

2×3×1,193 Posts
Default

Quote:
Originally Posted by Aramis Wyler View Post
I second the idea of being able to produce it in seconds vs iterations.
Buried in undoc.txt is some kind of option that will do roughly that. It is not nearly as elegant as output every N minutes.
Prime95 is offline   Reply With Quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Your help wanted - Let's buy GIMPS a KNL development system! airsquirrels Hardware 313 2019-10-29 22:51
Is GMP-ECM still under active development? mathwiz GMP-ECM 0 2019-05-15 01:06
LLR 3.8.6 Development version Jean Penné Software 0 2011-06-16 20:05
LLR 3.8.5 Development version Jean Penné Software 6 2011-04-28 06:21
LLR 3.8.4 development version is available! Jean Penné Software 4 2010-11-14 17:32

All times are UTC. The time now is 22:33.

Sat Sep 26 22:33:26 UTC 2020 up 16 days, 19:44, 0 users, load averages: 1.57, 1.48, 1.51

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.