OTOY Forums

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

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.

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??

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