OTOY Forums

- No groups in the scene

- GPU head room: 100 - dontwork
- GPU head room: 512 - works
- GPU head room: 1024 - works

What does that mean?


We urgently need some material explaining this relationship
between gpu head room and out of core.

"best practices" would be great

Hi samsue,
I am not a developer so I could say senseless things, but I think it depends on issues that come with the latest nvidia drivers when we need movements of large data packets (geometries and / or textures) between VRAM and RAM and VRAM are full.
keep in mind that 4k monitor/s, software editing, internet browser eat VRAM and Ram therefore Octane ends up having little VRAM.
Even denoiser wants VRAM.
My personal idea about a good hardware configuration to render is:
1 GPU to connect monitor/s (Windows and applications will use this GPU and VRAM to work).
It is deactivated in Octane. I will use it for denoiser.
1 or more GPU active in Octane.
Minimum 64 GB Ram (3dsMax as other applications eats Ram).
Then I will set 512MB head room (you can try 1024MB but it depends on VRAM available).
With very large scenes increase parallel sample and Max tile starting from 2/4 > 3/6 > 4/8..
And last but not least, optimize scenes e.g. having a very high poly forest with 8k textures away from the camera 500 meters will not make your render more beautiful but will eat a lot of VRAM or use Greyscale image texture node (specular, roughness, opacity, bump, diplacement ..) when needed instead of RGB image texture node.

Avoid grouping objects that create high amounts of polygons and textures. VRAM better manages small data packets.
Make all proxy movable.

Regards

you are not a developer, but you are our life saver

thanks for the infos!

So I'm assuming parenting instead of grouping would be the better way to go for Octane?

its Self-explanatory... but could you explain how to findand correct the problem?


OctaneRender Enterprise 2020.1 (8010000)

Empty file name.

-----------------------------------------------------

Mismatching barriers, 5 and 2

Thank you. This was helpful. Maybe someone can write this in the max doc?

Hi,

i got this error.

samsue wrote:Hi,

i got this error.

Hi samsue,
did you check on out-of-core using Nvlink?
Regards?

i have this setup. and yes are both whith nvlink connected

+ RenderSlave 4 x 2080 Ti with NvLink


currently has any advantage using nvlink with octane for 3ds max?