Screen Glitch During RT GPU

[Alan Iglesias]

Using RT in general for production work will be completely up to the user. If you can fit the file into each GPU's available RAM and can live with the GPU renderer's limitations, then why not? As an unbiased renderer, RT is very attractive when someone just wants to render without taking the time to find the sweet spot between image quality and rendering speed.

I've already delivered an (relatively simple) animation rendered in RT CPU and it was fast and looked great, but using it for production work will depend on many elements...

-Alan

[PDI]

I mean use the gpu's in Vray Normal to render an image on a per bucket basis.

[Alan Iglesias]

Ah, thanks...

-Alan

[Dariusz Makowski (Dadal)]

You can do it even now, but I don't really recommend it, as there might be differences when you use features that are supported in one engine, but not in the other. In any case, if you wish to try, you can create an environment variable called VRAY_OPENCL_MIXED_MODE from the System applet in the control panel and give it a value of "1" without the quotes. Then V-Ray will attempt to run the CPU and the GPU engines independently and in parallel. If you give it a value of "2", only the intersection will be done on the GPU, and the shading will be CPU. Both are very experimental and we haven't really tested them much.

You will need to re-start the V-Ray RT render server for the change to take effect.

Best regards,
Vlado

Where again do you want me to type tghat VRAY_Opencl_mixed_Mode ?

[vlado]

Go to Control Panel, System, Advanced, click on the "Environment Variables" button. Then click the "New..." button for the system variables; for the "Variable name" type "VRAY_OPENCL_MIXED_MODE" without the quotes; for the "Variable value" type "1" without the quotes. Click OK to close all the dialogs and then close the V-Ray render server. Next time it starts, it will attempt to run the CPU and the GPU engine in parallel. But, like I said, this is very experimental.

Best regards,
Vlado

[Dariusz Makowski (Dadal)]

Vlado I love u. AAAAAAAAAAAAAA WOrk like crazy :O, Final render plz to shot 10k pics and I go make big ££ o.o, I'll update soon my topic with results rotfl.

[NotHuman]

@dadal...
thanks for the hint - thats a real speedup!

[Alan Iglesias]

You can do it even now, but I don't really recommend it...

Best regards,
Vlado

Wow, everyone I spoke to at Siggraph said that this would slow down the GPU renderer...this is great news!

-Alan

[MarioRothenbuehler]

Wow, everyone I spoke to at Siggraph said that this would slow down the GPU renderer...this is great news!

-Alan

when i render on the quadro FX 3700, ths cpu load goes to 70% !!!! so i think there a lot must be optimized

[Dariusz Makowski (Dadal)]

Its normal... U need 1 cpu to handle the GPU from what I know... the extra 20% from second cpu is I guess secondary programs and so on..