Problem rendering big scene...

[HSR]

Hi
I have a scene where I need to build a big long furniture wall system that grows.
Now Ive made a single wallsystem and using cloner to duplicate it. If I try to render, Octane will fail when I exceed 10 clones (need 15).

The model is build using instances of elements containg a total of 1.160.000 polys. - and then cloned.


Im using a GTX 680 (2GB ram) and a GTX980 ti (6GB ram). Should I not be able to render this with 6GB of ram in my GTX980 ??

Anyone able to help sort out whats going on? Any solution to render this scene??

Thanks

[atome451]

Are you sure the clones are identified as instances by Octane? If it's not the case, i think you reach the polygons limit of Octane 2.xx.

EDIT: Bad reading. If i remember right, Octane doesn't support instances of instances. You may use instances for the first or second level but not both. I think the polygon limit is around 19 000 000.

[HSR]

Nope... However I did manage to solve the problem by cleaning up a bit. Removed some hidden geometry and now got my polycount down to 500.000. Now I can render.
But I wonder how you would be able to render bigger scenes? Can my gtx680 become a limitation? Think I read somewhere that octane will use the ram from the smallest graphic card??

[atome451]

With Octane 2.xx, with bigger scenes you may use the out-of-core system. It may store textures in RAM but not geometries. But the render will be slower because of huge informations reading on PCI-e.

If you use a 2GB VRAM and a 6GB VRAM, the usable VRAM memory will be limited to 2GB because Octane needs to store exactly the same informations on all GPUs. Out-of-core is independant because Octane still needs to store the same informations anyway on GPUs. Then you should test between using out-of-core and both GPUs or only using the 6GB VRAM GPU and compare performances. It is dependant of your computer performances: how fast is the PCI-e, RAM, CPU, ...

In the same logic, if one of your GPU is connected to a screen, this GPU will have lower VRAM and performances available and will reduce then the global VRAM available for the Octane rendering.

Hope this will help you