Go Back > Great Internet Mersenne Prime Search > Software

Thread Tools
Old 2019-11-25, 09:19   #1
Nov 2019

2×3 Posts
Default Question about the settings at Prime95


I have the following problem with Prime95. I use an AMD 3900X and want to run 2 workers in parallel. Once PRP or LL and once ECM Workunits. I have 32 MB of RAM installed. Now, if I let both threads run at the same time, the ECM Workunits will always only calculate Stage 1. It is always indicated to me that I have too little RAM. I have already tried 8 MB, 16 MB, 24 MB and 32 MB. I'm doing something wrong with the settings. I have 10 CPU cores counted at PRP / LL, the rest for ECM. Who can tell me how I have to set what and where, that the ECMs are always calculated in parallel by all Stages.

Many thanks for the help.

Greeting Bommer1
Bommer1 is offline   Reply With Quote
Old 2019-11-25, 11:13   #2
axn's Avatar
Jun 2003

19×271 Posts

Originally Posted by Bommer1 View Post
I have 32 MB of RAM installed.
Pretty sure you have GBs of RAM, not MBs. But P95 does specify memory in MB. So you can give much larger amount to the program, it should run Stage 2.
axn is online now   Reply With Quote
Old 2019-11-25, 12:55   #3
Nov 2019

610 Posts

Oh, sorry.

I mean GB ! :-)

Greets Bommer1

Last fiddled with by Bommer1 on 2019-11-25 at 12:56
Bommer1 is offline   Reply With Quote
Old 2019-11-25, 13:05   #4
Nov 2019

2×3 Posts


I found the problem. I have 32 GB of RAM installed in my computer.

In Prime95 you have to specify the RAM requirement in MB for the ECM WUs. I did that now and everything works great.

Thanks Bommer1
Bommer1 is offline   Reply With Quote

Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
prime95 settings evanh Software 3 2017-12-04 15:18
Some Prime95 settings lost rharmz Software 1 2014-05-20 07:36
Prime95 always uses nighttime settings fox_mccloud_123 Information & Answers 6 2013-05-07 21:12
[26.5] some Prime95 settings reset on their own ixfd64 Software 2 2012-07-18 14:41
priority settings in prime95 25.9 b1? joblack Software 4 2008-12-28 22:42

All times are UTC. The time now is 17:01.

Fri Oct 22 17:01:10 UTC 2021 up 91 days, 11:30, 1 user, load averages: 1.80, 1.71, 1.61

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.