Isotropix Forums

Hi Guys,

I am having issues with turning on the GPU feature in clarisse 4 SP2 update I have a Gigabyte nvidia RTX 2080 ti graphics card and have updated the driver and also up dated windows 10 drivers when I look for the button on the top bar to activate the GPU but button is not visible and when I go into the Prefedrences / 3d View to change the Hardware Acceleration Mode its greyed out.

Any ideas on how to fix this issue?

Regards,
Andrew

Hi there,

Strange indeed.
Do you have multiple graphics card on your machine (such as an integrated intel chipset?). Do you have access to the denoiser button?
If that so, Clarisse might be running on the non NVIDIA graphics card. It is possible to specify which graphics card you wish to run Clarisse on using the NVIDIA control panel.

Hi Sam,
I only have one graphics card on my machine and I don't have access to the denoiser button with 4 SP2. But when I open the older Clarisse 3.6 SP6 I do have the denoiser button. It is strange.

Any other ideas?

Regards,
Andrew

I wonder if it's not related to the CUDA version. 4.0 SP2 requires a news version of CUDA. What is strange is that I thought it should come with the drivers. Could you try to install CUDA 10?

Hi Sam,

I installed the CUDA 10 and it works now thanks for your help.

Regards,
Andrew

Thanks for your feedback, I'm sure you won't be the only one to have this problem.

Hello,

Normally you don't need Cuda to enable OptiX in the 3d view.
On what driver are you running now ?
When installing Cuda, if you do a recommended installation, the installation will install the new drivers.

That may be why it is working now. To be sure could you uninstall Cuda (if you don't need it) and tell us if it works ?
If it does not work we need to investigate this issue.

Thank you,

Kevin

FYI, I have the same problem, and I use
Nvidia Control Panel / 3D Settings/ Manage 3D setting/ Program Settings/
Then add Clarisse as a program to customize,
select
CUDA - GPUs / use these GPUs, and pay attention just select one. (I have two 1080 ti)
It solves this problem.

but If I select all, It will make optix denoise failed too.

Hi and Damn!!!
This problem still persists, maybe should be added somewhere in a FAQ or in the Denoiser tutorial.
Lost much time tweaking the settings with no results, added the other Denoiser Filter which is ... different ... and I couldn't find any documentation about it. All in all I had to render with much to high settings to have a clean render. With the tipp of @lostsoundzz Optix Denoiser worked again (worked before, don't know if it's the new version of Clarisse or a new nVidia Driver that broke something).

Maybe you should investigate or at least add it to the FAQ/Tutorials.