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Network rendering problem in difuze brightness

Posted: Wed Mar 06, 2013 1:50 pm
Hi, so I decided to put my animation to render on 2 computers, but there is a slight difference in brightness...
so the same scene,
both computers have nvidia 314.07 driver,
both have octane 1.11a,
both windows 7
both 3dsmax 2012
first computer has graphic card nvidia 570 and nvidia 670,
other one has nvidia 460 and nvidia 470...

why is there difference in brightness?

Image

ps: with backburner or without issue is the same

Re: Network rendering problem in brightness

Posted: Wed Mar 06, 2013 2:01 pm
and btw, I just noticed that only diffuze material is making that slight difference, all other materials like Specular and Glossy don't make a change, they all display correctly on each computer

Re: Network rendering problem in difuze brightness

Posted: Thu Mar 07, 2013 3:25 am
by roeland
Which kernel are you using? This can happen with the PMC kernel in some scenes.

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Roeland

Re: Network rendering problem in difuze brightness

Posted: Thu Mar 07, 2013 8:08 am
Path Tracing

Re: Network rendering problem in difuze brightness

Posted: Thu Mar 07, 2013 12:04 pm
so,.. is there any solution to this, or it's best that for now I just don't use Diffuse material in the future? I need to have a trusty renderer, I often can't afford to test if everything is working ok on network renderings, I need to know in advanced that all is stable...

Re: Network rendering problem in difuze brightness

Posted: Sun Mar 10, 2013 8:43 pm
by roeland
We are not aware of anything that can cause inconsistent brightness in renderings with path tracing.

Is the brightness the same if you use a glossy material with the glossy reflection set to zero? Do you get this difference in all scenes? And does the standalone version also produce this difference?

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Roeland

Re: Network rendering problem in difuze brightness

Posted: Wed Apr 10, 2013 10:35 am
Sorry it took a while for me to test this, didn't have time...
so here it goes.
When I puted glossy material without reflections, I didn't get difference in brightness... so this is a potential bypass...
other scenes didn't have this issue
I didn't test in standalone yet

Re: Network rendering problem in difuze brightness

Posted: Wed Apr 10, 2013 11:14 am
one update... IES lights are making big problems here, one computer gives one result, second gives diferent result...
is there any problems reported with ies lights?

we are using 1.12 octane version

Re: Network rendering problem in difuze brightness

Posted: Wed Apr 10, 2013 3:27 pm
by gabrielefx
I have the same problem using one workstation only

pmc produces flickering animations

really bad issue...