mersenneforum.org  

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

Reply
 
Thread Tools
Old 2019-02-28, 07:41   #56
bbb120
 
bbb120's Avatar
 
Feb 2019
China

59 Posts
Default

prime95 can only ECM number which like k*b^n+c,
but I want to use it to factor any integer!
how can I do this?
bbb120 is offline   Reply With Quote
Old 2019-02-28, 10:47   #57
Flammo
 
Feb 2019

22×3 Posts
Default

On another PC, Windows 10 Prime95 x64 PC, with build 3, neither Manual Communication nor Unreserve Exponent are selectable in the menu. They're both greyed out.
Flammo is offline   Reply With Quote
Old 2019-02-28, 11:01   #58
Falkentyne
 
Mar 2011

2×7 Posts
Default

Quote:
Originally Posted by Prime95 View Post
Yes, x87 FFTs only support exponents up to about 79.3 million.
Can't run beta 3 on a 9900K
Same error as the above poster: "an unsupported operation was attempted" when clicking on the stress test. Can't even open the stress test window.
Clean folder installation.
Falkentyne is offline   Reply With Quote
Old 2019-02-28, 12:24   #59
pepi37
 
pepi37's Avatar
 
Dec 2011
After milion nines:)

141910 Posts
Default

Quote:
Originally Posted by bbb120 View Post
prime95 can only ECM number which like k*b^n+c,
but I want to use it to factor any integer!
how can I do this?
Pminus1=5,4534567,1,45000,450000
pepi37 is offline   Reply With Quote
Old 2019-02-28, 16:36   #60
Prime95
P90 years forever!
 
Prime95's Avatar
 
Aug 2002
Yeehaw, FL

7,411 Posts
Default

Quote:
Originally Posted by bbb120 View Post
prime95 can only ECM number which like k*b^n+c,
but I want to use it to factor any integer!
how can I do this?
Use GMP-ECM
Prime95 is online now   Reply With Quote
Old 2019-02-28, 18:15   #61
Prime95
P90 years forever!
 
Prime95's Avatar
 
Aug 2002
Yeehaw, FL

7,411 Posts
Default

Quote:
Originally Posted by Falkentyne View Post
Can't run beta 3 on a 9900K
Same error as the above poster: "an unsupported operation was attempted" when clicking on the stress test. Can't even open the stress test window.
Clean folder installation.
Sorry. Testing on Windows 10 is not easy for me. I usually test on Windows Vista 32-bit and if that works, I assume the 64-bit Windows version will also work.

Anyway, I found the problem (the torture test dialog box is different in Windows 32 and Windows 64). Please try build 4.
Prime95 is online now   Reply With Quote
Old 2019-02-28, 18:16   #62
Prime95
P90 years forever!
 
Prime95's Avatar
 
Aug 2002
Yeehaw, FL

7,411 Posts
Default

Quote:
Originally Posted by Flammo View Post
On another PC, Windows 10 Prime95 x64 PC, with build 3, neither Manual Communication nor Unreserve Exponent are selectable in the menu. They're both greyed out.
That will happen is UsePrimenet=0 is set in prime.txt.
Prime95 is online now   Reply With Quote
Old 2019-03-01, 05:33   #63
Uncwilly
6809 > 6502
 
Uncwilly's Avatar
 
"""""""""""""""""""
Aug 2003
101×103 Posts

22×3×7×113 Posts
Default

Unrelated posts have been moved here: https://mersenneforum.org/showthread.php?t=24122
Uncwilly is online now   Reply With Quote
Old 2019-03-02, 06:38   #64
Flammo
 
Feb 2019

22×3 Posts
Default

Quote:
Originally Posted by Prime95 View Post
That will happen is UsePrimenet=0 is set in prime.txt.
Thanks, I had accidentally loaded it from a backup copy I made just prior to copying the new build over. You're right it's working fine.
Flammo is offline   Reply With Quote
Old 2019-03-02, 14:05   #65
Cruelty
 
Cruelty's Avatar
 
May 2005

23×7×29 Posts
Default

I am unable to perform any stress test on i9 7900X using AVX-512. I am using latest build4 in Windows10 Pro x64. After disabling this instruction set ("run a weaker torture test") everything is fine.
I am running this CPU at fixed 3.5 GHz, RAM is running in quad channel configuration at 2666 with stock voltage. CPU cooler is Corsair H115i PRO.
The same applies to another CPU i7 7820X on a different platform.

After launching "Small FFTs" test, program freezes with "worker starting" messages (see attached). CPU utilization is at 100%, however nothing else happens in "worker window". Stopping a torture test produces an output "Stopping all worker threads." in comm window but utilization remains at 100% and again nothing else happens. Selecting "Exit" only minimizes the application to tray icon, and again nothing else changes (utilization is still at 100%). Afterwards I have to manually kill it from task manager.

Launching any other stress test, makes application minimize to tray icon (after 2-3 seconds) and after a moment (another 2-3 seconds) it disappears. This scenario generates in Windows logs two entries "Information" and "Error" - attached are txt files containing details.

As I've mentioned I am reproducing such behavior on another PC with different CPU / motherboard / RAM configuration.

Any ideas what might be wrong?

Update: running everything on stock settings doesn't change anything.
Attached Thumbnails
Click image for larger version

Name:	2019-03-02.png
Views:	114
Size:	53.2 KB
ID:	19974  
Attached Files
File Type: txt i9-7900x-information.txt (4.8 KB, 92 views)
File Type: txt i9-7900x-error.txt (1.8 KB, 135 views)

Last fiddled with by Cruelty on 2019-03-02 at 14:48
Cruelty is offline   Reply With Quote
Old 2019-03-02, 15:26   #66
Prime95
P90 years forever!
 
Prime95's Avatar
 
Aug 2002
Yeehaw, FL

741110 Posts
Default

Quote:
Originally Posted by Cruelty View Post
I am unable to perform any stress test on i9 7900X using AVX-512. I am using latest build4 in Windows10 Pro x64.
I don't have an AVX-512 machine running Windows here. I use linux for my AVX-512 testing.

If you run just one torture thread instead of 16 or 20 does the torture test begin OK? If one works, does two? etc.

Have you checked the BIOS for AVX-512 offset (voltage)? Mystical has reported many early motherboards had this set improperly or not at all.
Prime95 is online now   Reply With Quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Prime95 version 29.2 Prime95 Software 71 2017-09-16 16:55
Prime95 version 29.1 Prime95 Software 95 2017-08-22 22:46
Prime95 version 26.5 Prime95 Software 175 2011-04-04 22:35
Prime95 version 25.9 Prime95 Software 143 2010-01-05 22:53
Prime95 version 25.8 Prime95 Software 159 2009-09-21 16:30

All times are UTC. The time now is 15:49.

Mon Apr 19 15:49:38 UTC 2021 up 11 days, 10:30, 0 users, load averages: 3.07, 2.19, 2.02

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.