Iray rednering stuck at "Retrieving geometry"

MelonArts3D

Hii, so sometimes Daz Studio get stuck on "Retrieving geometry" when i want to start the rendering. This time it was stuck more than a hour.

So My GPUs are 3090 and 4090.. I don't think it's the VRAM.

Does someone know why this keeps happening and maybe has a solution for this?

Elor

Hello,

It happened to me was when I wanted to use Iray Vellus Horizon Shader System for Genesis 8 and 8.1 Female on a character with a Mesh Resolution set at 4 for render. Reducing the character Mesh Resolution to 3 fixed the problem.

Maybe you have a product like that active in your scene.

MelonArts3D

Thanks it worked. But whats the reason for this? Why do the products not work with Mesh Res 4 or 5?

SofaCitizen

From what I understand, SubD increases exponentially as for each level you are sub-dividing the previous subdivision and so higher levels probably mean it either exceeds your PCs capacity. For example if you had an object with 10,000 polygons, SubD of 1 probably only takes it to 40,000 and 2 takes it to 160,000. However, 4 would be 2.5 million and 5 would be over 10 million and so the resources required are very much higher. There might be some fancy maths or optimisation that means it's not that extreme but I think that's the gist of it.

Elor

I found this message:

Soto said:

 Happened to me too using G8M. But I assumed that between the character 4 subdivision level and the heavy scene, the RAM just choked. Remember Vellus Horizon uses displacement subdivision 5 on the Geometry Shell. So if you have a Level 4 Geomery Shell and it also subdivides it by 5, it can get out of hands. Unless I'm missing something. I'm no expert on Geometry Shells. I've had to leverage those values to get it to render.

https://www.daz3d.com/forums/discussion/comment/6655546/#Comment_6655546

I don't know what was changed with the Genesis 9 version, because it works on Mesh Res 4 like a champ.