Vray-Rt with HD7950 working!

[paneli]

Ok.

If someone that can run the test and post the results will be great!

cheers Riley

 

Please test this scene:

http://www.2shared.com/file/4916332/27c6b026/City01-V1d.html

 

Found it Evermotion a long time ago.

You must have Vray to open it.

 

With Quadro 4000

3Ds Max 2011:

Smooth + Highlights + Edged faces: 8.815 FPS

Wireframe: 40FPS

 

Quadro FX580

3Ds Max 2013:

Nitrus -Shaded: 3 FPS

Wireframe: 10FPS

 

I dont have an opportunity to test 3ds max 2013 on quadro 4000 atm..

[kishore3d]

Hai im trying to render in vray rt using my graphic card Nvidia cuda Geforce GT 545 and i get too much noise in my render can any one please kindly help in this http://s11.postimage.org/qiln2nmgj/vray_rt_test.jpg

[Dimitris Tolios]

Hai im trying to render in vray rt using my graphic card Nvidia cuda Geforce GT 545 and i get too much noise in my render can any one please kindly help in this http://s11.postimage.org/qiln2nmgj/vray_rt_test.jpg

 

You are not in the right thread for this question, this is about AMD cards straggling with VRay RT, not nVidia cards

 

Your card is slow. Vray RT requires massive amounts of computation power to brute-force ray-trace scenes, and interior scenes are the hardest to compute anyways, regardless of CPU or GPU.

 

There is no "easy mode". For RT GPU to reach fast, clean results, you need fast cards.

If the resulting image will be your final/production image, to get fast results with acceptable noise, you will need one (or more) fast GTX (5xx/6xx ideally) or one of the fast Radeon 79xx cards (given they short the drivers out). If you don't, you won't be able to get acceptable results much faster than you would with your CPU, so at best you can hope for lighting adjustments and quick previews with RT GPU, then rendering as you were used to with the CPU.

 

You should be happy that your card even runs RT GPU.

Edited February 18, 2013 by dtolios

[Valtiel]

Here's an update I posted on chaos group's forums a few mins ago. Edit: Just tried with Max 2013 and the Cat13.12 Beta 6 drivers. Same issue as 2011.

--------------------------------------------------

Small update on my experiences here.

 

While the performance is still poor in general on RT 2.30, I can say it scales well with multiple GPUs. I grabbed a second 7950 and got a 7m, 40s time on both uncrossfired cards, better than linear from a 16m time on one card.

 

Unfortunately I can't get the OpenCL client on RT 2.40.03 to work at all again. The RT server seems to be stuck sorting the scene out (In the "waiting for image data" stage of the activeshade window). I know this typically takes a few minutes the first time around for a scene in a working setup but I tried letting it think overnight until the VRAY standalone process crashed. The CPU client works fine, as expected.

 

As an aside, it seems AMD crippled folding performance with Cat 13.1 as well. GPU utilization is down to ~40% on the 7000 series for most people, though some have managed to get it back to high 90%'s after exhaustive driver cleaning and custom SDK/beta driver combinations. I know more of their market is gamers but it's still a shame they're throwing away potential compute functionality to chase fps in Crysis 3. Maybe I should've held onto my dollars for a single titan card >_

Edited February 22, 2013 by Valtiel

[arqingarquitectura]

I've a comment... CUDA technology, as I know, is olny for nVidia GPU's... ATIs work best wiht OpenCL. That's why you have +27 mins... The best compared value is the GPU vs CPU.. that result rocks!

I hope this comment helps .. If Im wrong please tell

[Valtiel]

Hi Arqing. You're right, CUDA works only for nVIDIA hardware and AMD cards trounce nVidia at OpenCL processing (excepting maybe Titan). I'm trying to get my 7950's working on the RT OpenCL client which, like you said, should run well. The problem is that they hardly run at all; it's not really the cards' raw performance that's the issue but a program-to-metal miscommunication that's causing poor times in the cases when it runs at all. There's another thread going where I've spoken to vlado on the issue. I've only gotten any RT OpenCL scene to work on the VRAY and Catalyst release combination listed above before AMD's next driver release fudged any OpenCL rendering at all. It hasn't worked since. I'm sure it'll run great when the program and drivers are speaking properly to each other, but I suspect it's not in AMD's list of priorities; they're too busy chasing fps in Crysis 3.

 

It's disappointing having all of this unused horsepower.

[Dimitris Tolios]

I've a comment... CUDA technology, as I know, is olny for nVidia GPU's... ATIs work best wiht OpenCL. That's why you have +27 mins... The best compared value is the GPU vs CPU.. that result rocks!

I hope this comment helps .. If Im wrong please tell

Yes, thus why a whole thread about it even working.

It is still not decided whether Chaosgroup just did a bad job with OpenCL, or AMD messed up with the drivers...I tend to think it is Chaosgroup's/Vray Dev's bad translation from CUDA that is responsible. AMD cards seem to be doing great in most OpenCL accelerated apps, like the new Adobe suite regardless of drivers...