Vray RT GPU not working

[Guest]

I have 3 computers which have a quadro 1700, 3500 and 4000 in them. I have downloaded the latest drivers for all, but it doesn't work!

1700 - Is found and activated in the "Select OpenCL devices for V-Ray RT GPU" When I submit a job for DR vray rt server just says waiting for command..... then vray stand alone crashes.
3500 - Is not found and is not activate in the "Select OpenCL devices for V-Ray RT GPU" When I submit a job for DR vray rt server just says waiting for command.....
4000 - Is found and activated in the "Select OpenCL devices for V-Ray RT GPU" When I submit a job for DR vray rt server just says waiting for command..... then vray stand alone crashes.

I tried to find the *.clbin file in the temporary folder for all computers and it doesn't exist, on WIN XP 64. I am using a trial version 30 days full access of Vray 2.0. Would this cause any problems?

I have tried rebooting also. Help!!

[Zdravko]

Could you please try to install older nVidia drivers (form March in example) and let us know if the problem persist.

[Guest]

I have found drivers released in April that have CUDA 4.0, I will try these as the latest drivers have CUDA 4.1.

[Guest]

Its all working I had 275.36-Quadro-winxp-64bit-international-whql installed. I installed 270.61-Quadro-winxp-64bit-international-whql and it is all working fine for all 3 cards. Thanks for the help. I guess it is down to the CUDA version being different?

[vlado]

Its all working I had 275.36-Quadro-winxp-64bit-international-whql installed. I installed 270.61-Quadro-winxp-64bit-international-whql and it is all working fine for all 3 cards. Thanks for the help. I guess it is down to the CUDA version being different?

No, looks like a bug in the driver...

Best regards,
Vlado

[Guest]

I still seem to be having issues with this, using distributed rendering and the GPU. I hit render and I have excluded my own PC from the rendering. I have set the render to be only 500 samples, I hit render and on the render slave takes ages to start actually doing anything it says new data index is... and it counts up for about 5 minutes and then starts rendering.

But if I set the render to be timed as 3 minutes, the render progress bar starts going and finished after 3 minutes. But the render hasn't even started, because it takes the render slave at least 5 minutes to start rendering. If I submit the job via Back burner with distributed rendering off, it starts much faster almost instant.

What am I doing wrong? Why does it take so long to get started?

[Guest]

Also tried to render a scene on the Quadro 4000 via back burner and it said new data index is... and it wouldn't start rendering at all. The render window started but did nothing. I think I made it fall over as the scene was quite heavy, see attached the scene I tried to render.

[Guest]

Any suggestions on this? I also sent the job to the CPU using RT as a production renderer, and it just hangs saying rendering image. The RT server says preparing ray server. It seems scenes like the one above just cant be rendered using RT.

[Guest]

In active shade mode, it starts rendering pretty quickly, but using RT as a production renderer just seems to hang.

[vlado]

Make sure you close the ActiveShade window first. I thought this was fixed for V-Ray 2.10 though.

Best regards,
Vlado

[Guest]

Yeah I have done that, I have even restarted PC and just sent the job straight away to backburner and rendered locally and it just hangs. Is it possible the scene size is just too large?

[ghiom3d]

sometimes we need to start vray rt server by hand to make production render start.
On the main computer , but also on the nodes if you don't use distributed rendering with RT but Backburner.

[Guest]

Pretty sure I tried that but will defo try again, thanks.

[Guest]

Nope, it still just hangs. If I render for x amount of time in active shade it renders fine. But if I use RT as a production renderer and submit over backburner it doesn't actually get going.

Also I set the max paths per pixel to 10 for active shade and its now on 12 :/ it doesn't stop. ahhhhhhhh!!

[vlado]

I guess it would be best to email us to vray@chaosgroup.com and schedule an online session with our support guys to try and figure out what's the problem.

Best regards,
Vlado