Vray 3.6 Hybrid Render Questions.

[HFDZDN]

Hi i have a 2 x GTX1070 set up with 4C/8T cpu.

Should i render on SLI or have it disabled?
Ive tried this and without SLI it seems like Vray is only putting load on GPU 2 (not connected onto any monitor)
With SLI however, i've ran into a lot of crashes, error 719 etc. Currently on latest driver, (tried 376ver)

Render usually stops after building light cache what does this actually mean? If i've ran out of VRAM on the GPUs how to i balance this?

What's the optimized setting for stable, fast & high quality render on the latest 3.6 with Hybrid rendering?

[HFDZDN]

Also, building light cache takes forever. Subdiv's at 2200 tracing at 3.
I can't use VRScans material as well as in renders it appears black. I've checked thhe faces etc still no avail..

[konstantin_chaos]

Hi i have a 2 x GTX1070 set up with 4C/8T cpu.

Should i render on SLI or have it disabled?
Ive tried this and without SLI it seems like Vray is only putting load on GPU 2 (not connected onto any monitor)
With SLI however, i've ran into a lot of crashes, error 719 etc. Currently on latest driver, (tried 376ver)

Render usually stops after building light cache what does this actually mean? If i've ran out of VRAM on the GPUs how to i balance this?

What's the optimized setting for stable, fast & high quality render on the latest 3.6 with Hybrid rendering?

Hi HFDZDN,

We recommend that you disable SLI.
It might cause issues and will not help with rendering in any way.
V-Ray will automatically use the available GPUs without any additional setup required.

There are a couple of options that can help you optimize the VRAM usage when dealing with big number of textures used in the scene:

The 'Resize' menu gives you access to:

> On-demand mipmapping
Instead of loading all the texture files at their default resolution, V-Ray will load the textures as needed and automatically create mip-map tiles for them.
As a result, the GPU memory consumption could be decreased; textures that are not visible will not be loaded, and textures that are further away from the camera will be loaded with a lower resolution.
This option is only available in the Non-Interactive / Production Rendering Mode.

> Resize textures
Adjusts the size of high-resolution textures to a smaller resolution (specified bellow).

Also, building light cache takes forever. Subdiv's at 2200 tracing at 3.
I can't use VRScans material as well as in renders it appears black. I've checked thhe faces etc still no avail..

The Light Cache calculations are done on the CPU and then used by the GPU/CUDA engine in the final rendering stage.
This means that you'll not be calculating LC faster with the GPU option selected.

The VRscan materials are still not supported by the GPU/CUDA (Hybrid) engine.
We are working on adding support with one of our future updates.

Regards,
Konstantin