Render node not using CPU with Hybrid CUDA Rendering

V-Ray V-Ray for Maya Issues
1

Hi guys,

I’ve got a little issue with rendering via Backburner:

I’ve set a couple of scenes to use CUDA GPU + CPU, when I send the scene to Backburner it uses both the CPU and GPU on my local PC, but on an identical render node PC it only seems to use the GPU, the CPU is ignored.

Would anybody know why this may be?

Both PCs are running windows 10, Maya 2018.6, and Vray Next 4.12.01

2

Have you enabled C++/CPU on the slave machines, in the Select devices for V-RayGPU rendering tool?

3

Ah, that did it! It wasn’t enabled in the GPU options… Many thanks for the fix!

4

You are welcome

5

Hi, I seem to be having an issue with this again: My render slave PC has got both the CPU and the GPU (GTX 1060) set to render in the “Select Devices for V-Ray GPU Rendering” tool, but it isn’t rendering on the CPU on the slave.

I’ve attempted restarting and updating the graphics card drivers to the latest studio releases (matching on both identical PCs).

6

…I’m still having this error, despite having the CPU and GPU set to be used in the “Select Devices for V-Ray GPU Rendering” tool :confused: @Zdravko.Keremidchiev

7

I’m sorry for the late reply. Would it be possible to send us an e-mail (support@chaosgroup.com) so we could arrange a team-viewer session and check thigs first hand. Please make sure to mention this thread in your e-mail.

8

Was there any resolution to this problem?

I’m having the same issue with Vray 5 for Mays, the local machine uses CPU and GPU but my two render nodes only use their GPU’s.

Thanks

9

I’m afraid I can’t remember now, I guess you could try and make sure you’ve got identical versions of Vray on both your master and slave PCs, with the same version of the license server too. Sorry that I can’t be of more help!

10

All the versions are identical, all Windows 10 Pro machine, network is 10Gbe, Nvidia Drivers all the same. Baffling as the Vray Next Benchmark uses the GPU and CPU at 100% on each.

Does yours work now?

Thanks

11

Did you double-check whether you have enabled C++/CPU on the slave machines, in the Select devices for V-RayGPU rendering tool? If that is not the case I would advise you to write us an e-mail so we could arrange a team-viewer meeting.

12

Hi,

Yes all setup to use GPU and CPU on each each slave and the local workstation.

13

Do you use NVLink and which V-Ray version is this?

14

I don’t use NVLink and it is Vray 5 for Maya

15

In this case, please send us an e-mail to support at chaosgroup so we could arrange a Teamviewer session and check the issue first hand.