topic Re: Arnold GPU render SSS sampling problem in Maya Shading, Lighting and Rendering Forum

Arnold GPU render SSS sampling problem

emre_bgs — Fri, 22 Nov 2019 13:58:38 GMT

I'm using Arnold's GPU render.When ı activate SSS my render is dying.When ı deactive SSS taking a good renders.How can ı solve this problem?

Re: Arnold GPU render SSS sampling problem

Christoph_Schaedl — Mon, 25 Nov 2019 06:58:27 GMT

Lower the cam samples to 2.

Incrase the adaptive max cam samples to 64.

That will throw two samples everywhere and if needed 64 until the noise threshold is reached.

Or the max of 64 samples.

In somes extreme cases you could go up to 128 max cam samples and a threshold of 0.005

Re: Arnold GPU render SSS sampling problem

Anonymous — Tue, 26 Nov 2019 11:56:55 GMT

Still same.Not changed anything.

Re: Arnold GPU render SSS sampling problem

Christoph_Schaedl — Tue, 26 Nov 2019 12:45:47 GMT

Could you upload the file here.

Maybe just the half head + ear and the lights.

zip the maya file and attach it here.

Re: Arnold GPU render SSS sampling problem

Anonymous — Tue, 26 Nov 2019 23:49:25 GMT

I deleted this project.I'm trying other projects,all projects same.When ı activate SSS my render is sampling.I'm trying increase Cam(AA) and other settings but still not working.Is thıs a general error at GPU render?Because GPU render still in beta.

Re: Arnold GPU render SSS sampling problem

Christoph_Schaedl — Wed, 27 Nov 2019 07:47:04 GMT

I get clean renders here on GPU with sss.

Please upload an example file.

Re: Arnold GPU render SSS sampling problem

Anonymous — Wed, 27 Nov 2019 13:50:16 GMT

Man,ı'm trying on sphere but result still same

Re: Arnold GPU render SSS sampling problem

Christoph_Schaedl — Wed, 27 Nov 2019 15:21:34 GMT

How long did you render on that image?

Let it render for 10min.

Re: Arnold GPU render SSS sampling problem

emre_bgs — Wed, 27 Nov 2019 15:44:50 GMT

Seems %100,ı waited around 1 minute.

Re: Arnold GPU render SSS sampling problem

Christoph_Schaedl — Wed, 27 Nov 2019 18:47:36 GMT

It took here to render around 6min.

I asume it wil take up to 20min on your weak graphics card.

The ss depth is extreme high on your sphere example.

And ss does take longer to solve on GPU.

Re: Arnold GPU render SSS sampling problem

Christoph_Schaedl — Wed, 27 Nov 2019 19:30:00 GMT

To get a cleaner image faster you could turn on the Denoiser in the AOV tab and in the Renderview.

And to see how much is rendered set the log to Info and it will print the rendertime in the Output Window.