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Getting Vray RT set up for OpenGL active shade
show user profile  9krausec
Hello all, I am currently having some issues with getting Vray RT to work in openGL mode as opposed to running off the cpu..

When I run Vray RT with OpenGL, Vray Active shade simply crashes.. All my drivers are up to date, so I am sort of confused as to why Vray RT wouldn't work with my GPU..

any troubleshooting suggestions? I am sort of out of my element on this one.

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9/12/2011 11:11:30 PM (last edit: 9/12/2011 11:11:30 PM)
show user profile  BishBashRoss
It's openCL. :) Also, what card do you have and how much memory has it got?

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9/12/2011 11:26:59 PM (last edit: 9/12/2011 11:26:59 PM)
show user profile  zeefusion
Latest drivers don't work. Use 270.61. Providing you are using Nvidia. If AMD then there's not much support for the cards yet. Well there wasn't when I tested it a few months back.
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9/13/2011 12:47:10 AM (last edit: 9/13/2011 12:48:20 AM)
show user profile  9krausec
I'll try the 270.61

I have two 560 ti cards with 2 gigs in each card.

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9/13/2011 3:59:58 AM (last edit: 9/13/2011 3:59:58 AM)
show user profile  advance-software
I'm unaware of any current vray-rt AMD opencl issues.

if you know of any current problems please let me know & I'll inform the dev team.
read 3182 times
9/13/2011 7:51:11 AM (last edit: 9/13/2011 7:52:12 AM)
show user profile  zeefusion
It may have been fixed by now but back when I was looking at them. The ATI OpenCL implementation didn't support OpenCL image objects yet or something and even after that only a hand full of Graphics cards worked.

But like I said was ages ago and you say there are no current problems so ignore my comment :)
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9/13/2011 10:49:44 AM (last edit: 9/13/2011 10:49:44 AM)
show user profile  9krausec
Another question... If I have 2 560 ti cards, would switching them to SLI mode make VrayRT run super awesome? Would vray take full advantage of SLI?

I'm trying to decide if it would be more productive to have SLI turned on or off. I like having 3 screens though.. : /


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9/13/2011 3:36:30 PM (last edit: 9/13/2011 3:36:30 PM)
show user profile  BishBashRoss
I believe you want SLI off.

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9/13/2011 3:45:06 PM (last edit: 9/13/2011 3:45:06 PM)
show user profile  9krausec
Hmm.. Ok, I downloaded the driver and it seems to be working now... I do have SLI turned off, but I am very surprised to see the performance of GPU ran VrayRT... It is slower than running it off the cpu (very noticeably slower)..

I have a 2600k i7 OC to 4.6 Ghz.

This makes me think that I may not be doing something correctly because I have heard so much about GPUs out performing CPUs in rendering, that I can't believe that with two 560 ti cards with 2 gigs of mem each, it is normal for such sluggish performance.

Advice? Ideas? Let's collaborate.

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9/13/2011 5:58:15 PM (last edit: 9/13/2011 5:58:15 PM)
show user profile  Dr. Jim
Hmmm.......I would question whether it is using the power of BOTH 560's properly?

I would 'think' a 2X 560GPU would be faster than a single 2600K?......But I don't know enough about it for sure.

I know that my single gtx580 is the same speed as my Dual Xeon 6-core system.......and Vlad at chaos confirmed this to be about right since the 12 cores are pretty fast.....

I assume you have selected BOTH cards in the OpenCL utility?....And can confirm they are both accounted for by Vray RT?
read 3140 times
9/13/2011 6:03:07 PM (last edit: 9/13/2011 6:04:56 PM)
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