Search found 7 matches

by Wumme
Fri Feb 12, 2021 7:15 am
Forum: User Support
Topic: MultiGPU stresstest - GPU(s) stop(s) calculating kernel
Replies: 12
Views: 6717

Re: MultiGPU stresstest - GPU(s) stop(s) calculating kernel



I think you are missing the opencl. prefix.


Yes, I was wrong "native.threads.count" is for PATHCPU, PATHOCL requires "opencl.native.threads.count".


Yea, that did it. Now the GPU are stressed on their own.
I did 3x 12hrs tests and it failed twice. Next thing I am going to try is a ...
by Wumme
Fri Feb 12, 2021 7:09 am
Forum: User Support
Topic: MultiGPU stresstest - GPU(s) stop(s) calculating kernel
Replies: 12
Views: 6717

Re: MultiGPU stresstest - GPU(s) stop(s) calculating kernel




The latest LuxCore uses C++ code for rendering, by default, with the CPU (i.e. no need to use/have an OpenCL CPU device). To disable the CPU usage, you have to set the number of CPU threads to 0 by setting "native.threads.count" to 0.


...

LuxCoreUI v2.4 (LuxCore demo: http://www ...
by Wumme
Wed Feb 10, 2021 7:15 am
Forum: User Support
Topic: MultiGPU stresstest - GPU(s) stop(s) calculating kernel
Replies: 12
Views: 6717

Re: MultiGPU stresstest - GPU(s) stop(s) calculating kernel


The latest LuxCore uses C++ code for rendering, by default, with the CPU (i.e. no need to use/have an OpenCL CPU device). To disable the CPU usage, you have to set the number of CPU threads to 0 by setting "native.threads.count" to 0.


I have already tried that. Does not work for me.. or I am ...
by Wumme
Tue Feb 09, 2021 7:49 am
Forum: User Support
Topic: MultiGPU stresstest - GPU(s) stop(s) calculating kernel
Replies: 12
Views: 6717

Re: MultiGPU stresstest - GPU(s) stop(s) calculating kernel


Mmm, right, you could download LuxCoreRender standalone version (https://luxcorerender.org/download/), download LuxMark test scene (https://github.com/LuxCoreRender/LuxCoreTestScenes/tree/master/scenes/LuxMark-LuxBall) and run LuxCoreUI from command line :idea:

It is not LuxMark but is even a far ...
by Wumme
Fri Feb 05, 2021 12:49 pm
Forum: User Support
Topic: MultiGPU stresstest - GPU(s) stop(s) calculating kernel
Replies: 12
Views: 6717

Re: MultiGPU stresstest - GPU(s) stop(s) calculating kernel


You can try to run 8 instances of LuxMark (one for each GPU) instead that a single one using all GPUs: if it works, it should be a good hint the problem is software and not hardware related.


I just came back from lunch break and wanted to start own instances of LuxMark for every GPU, but the ...
by Wumme
Fri Feb 05, 2021 11:44 am
Forum: User Support
Topic: MultiGPU stresstest - GPU(s) stop(s) calculating kernel
Replies: 12
Views: 6717

Re: MultiGPU stresstest - GPU(s) stop(s) calculating kernel

May be but the last LuxMark version has been used now for many years and no one had ever reported a similar problem.?
Ok, yea I have already checked if I use the right version. LuxMark v3.1.

Do you need to use AMD GPUs or can you tried NVIDIA too ?
Yes I need to use AMD GPUs.


You can try to ...
by Wumme
Fri Feb 05, 2021 8:37 am
Forum: User Support
Topic: MultiGPU stresstest - GPU(s) stop(s) calculating kernel
Replies: 12
Views: 6717

MultiGPU stresstest - GPU(s) stop(s) calculating kernel

Hello all,
I did a quick search and could not find anyone with a similar problem, so here we are.

The problem I am having is the following. I do a stresstest consisting from LuxBall HDR scene stress test on all GPUs and a Prime95 torture test on the CPU. After some time usually 1, 2 or even 3 GPUs ...