Hardware / RAM Problem ? Jacobi

[AndreasAuf]

Hallo All,


I have the following Problem:


1. Torture Test stops with an Error.
2. Change RAM Module
3. Torture Test works
4. Primality Test works


...from Time to Time I stop the workers. Jacobi runs. From Time to Time Jacobi stops with an Error...sometimes not.


Do anybody have an idea whats going wrong?
Or is it "normal"


Thanks for help

[retina]

Originally Posted by AndreasAuf

Hallo All,


I have the following Problem:


1. Torture Test stops with an Error.
2. Change RAM Module
3. Torture Test works
4. Primality Test works


...from Time to Time I stop the workers. Jacobi runs. From Time to Time Jacobi stops with an Error...sometimes not.


Do anybody have an idea whats going wrong?
Or is it "normal"


Thanks for help

Errors are not normal.

You have a system problem. It might be RAM, or something else, or multiple causes. Try reducing the clocking for the RAM and/or the CPU. Try raising the voltages a little. Make sure your PSU isn't flaking out under load. Monitor the temperatures, see if something is overheating. etc.

[kriesel]

What software are you referring to; prime95, mprime, something else?
How old is the hardware, and has the dust been blown out lately?
Will it pass a memory test such as by memtest86+?

[AndreasAuf]

Thanks,


I have seen that I am not the first with this ERR.


I begun again from 0. For now it works fine. But I like to know what happened !?

[kriesel]

Run PRP instead, on properly assigned work. Its detection rate of error is far superior. Nearly 100% for GEC on PRP, versus 50% detection rate on Jacobi for LL. The less reliable the hardware, the more important that difference is.