Vray CUDA RT Error | cannot create CUDA renderer plugin

[Khazmadu]

I just updated Vray to 2.4. Everything is working fine so far. But I can't use the new Cuda RT-Rederer.
I get always this message:

// Warning: No scene found; cannot create CUDA renderer plugin. //

I get the Error in Maya 2012 and Maya 2014

OpenCL doesn't work too. That worked before in 2.2.
The CPU RT renderer works normal.

My Graphic Card is a Quadro 4000 with the latest Driver.

Can Anybody help me with that?

[savage309]

This message does not means that RT will not work (it is kind of confusing), but there is issue for real in 2.4 for RT CUDA under OS X.
This however should be fixed in the nightly builds. Can you try them and confirm if it is working ?

p.s. sorry - I have assumed you were using OS X.

[t.petrov]

Can you tell us what OS are you using?
Can you post the log from the V-Ray Standalone that is started by Maya for RT renderings?

[Khazmadu]

I am using Windos 7

this is from the Vray Log:

Calling beginSequence().
[SettingsPNG] No image writer specified.
[SettingsJPEG] No image writer specified.
[SettingsSGI] No image writer specified.
[SettingsTIFF] No image writer specified.
[SettingsTGA] No image writer specified.
[SettingsEXR] No image writer specified.
Preparing renderer...
vrend command executed
vrend: -q
vrend command executed
vrend: -p
vrend: 0
vrend command executed
vrend: -q
vrend command executed
vrend: -q
vrend command executed
vrend: -q
Preparing scene for rendering...
Preparing scene for rendering...
[RenderView] startCameraTime=1.000000, endCameraTime=2.000000
[RenderView] numCameraTMs=2, numFrames=1, frameSamples=2
Creating texture cache with size 0 MB
Creating bitmap manager
[RenderView] startCameraTime=1.000000, endCameraTime=2.000000
[RenderView] numCameraTMs=2, numFrames=1, frameSamples=2
CUDA renderer requested.
No scene found; cannot create CUDA renderer plugin.
Creating render callback from built-in VFB.
[RenderView] startCameraTime=1.000000, endCameraTime=2.000000
[RenderView] numCameraTMs=2, numFrames=1, frameSamples=2
Starting DR 1
dr host: 127.0.0.1
Connected to render host 127.0.0.1:20207
Using 1 hosts for distributed rendering.
Preparing camera sampler.
Preparing scene for frame...
Preparing scene for frame...
Setting up 6 thread(s)
Bitmap file "***" loaded.
Qt threads completed
Bitmap file "***" loaded.
Preparing ray server.
Scene is empty.
Preparing direct light manager.
Initializing built-in VFB.
OpenEXR compression type is 0
VFB writing to raw image file
Preparing global light manager.
Running RTEngine
Setting up 1 thread(s)
vrend command executed
Render host moskau (127.0.0.1) is not responding

I deleted the File pathes here.

Maybe the Problem is that he is looking on the wrong IP for the Client.

[t.petrov]

No, it looks like VRay Standalone has crashed.
Can you start it manually from the start menu. Search for V-Ray standalone, click on the link and it will pop up a command prompt with the help for vray.exe.
In this command prompt please execute vray.exe -server.
Then start RT GPU in Maya.
When it crashes please copy-paste the error log.

To copy-paste from the command prompt you'll have to right click on the title bar and then edit->mark or something like that.
Then you can select the text you like to copy. Selecting the text is an automatic copy operation, so now you have to paste it in a text editor or paste directly in a post.

[Khazmadu]

I started the Server Manually. I got the error "There is another Server Already running".

But anyway now it works.

It's not realy fast, but i guess my GPU is just to slow.

Thanks for the help

[t.petrov]

Then you're probably running the vray.exe as a service.
In this case there is a big chance that RT GPU won't work, because windows services have problems accessing the GPU.

Most of the times you need a Tesla card and special drivers.