Today after quick chat with Michał Franczak from Evermotion I’ve decided to test how hard it would be to render one of their scenes on GPU. They have kindly provided Archinteriors vol. 42 for testing and it gave birth to this quick test.
It did turned out easier than I expected. Here is video I’ve recorded of the process:
At first I tested how the settings from older V-Ray are holding up. Than I did 1 min test render with Adv CPU for reference.
Converting to V-Ray RT GPU 3.5 was as easy as switching rendering engine and using CUDA instead of CPU.
Here are rendering results ( I raised LC samples back to 1000 after recording the video for the finals rendering ):
RT GPU render with threshold 0.01, no denoiser. (28 min 52 sec)
RT GPU render with threshold 0.05, with denoiser (7min 57 sec)
Adv CPU render with threshold 0.01, no denoiser. (1h 48min 53s, lighting difference caused by skylight portals)
Rendered on 400USD GPU – GTX 1070 8GB.
For CPU I used 4770K overclocked to 4.2Ghz.
It took only around 3GB of GPU memory for the scene. I was also able to drop it down to 2GB with on demand textures switched on.
Original CPU renders and scenes are available on Evermotion website.