I’ve been doing a few renderings using Raytraced and they’ve turned out great, though quite time consuming although simple. Whenever I render, I’ve noticed the CPU shoots up to 100%, whereas the GPU stays at 0. I’ve made sure RT is using the GPU under CUDA in options, verified by the text at the bottom of the viewport next to cycles. Screenshot of GPU-Z showing 0% GPU load and systeminfo is attached.
Not sure if there’s any other way to verify this. I’ve kept an eye on the integrated graphics as well, the load there moves between 1% and 15%. I would imagine that it’d be more if it was trying to do raytraced rendering.
When you say you do a render, do yu mean the Rhino command _Render that pops up the render window? If so then that isn’t using Cycles at all. If you want to get a file from whatever you have in your Raytraced viewport you can use -_ViewCaptureToFile.
This is where I go to render, and it seems to use only cpu. ViewCaptureToFile used GPU and finished the job in 2 minutes under roughly 65% load. Is there a more intuititive way to use cycles with GPU?
Also, I don’t really have a reference as to what sort of speed I should be expecting from my Quadro T2000.TEST.3dm (347.4 KB) I’ll link the .3dm. I’d love some input.
The Rhino Render in v6 does not use Cycles as the render engine. The engine driving Rhino Render in v6 is CPU only.
You could use _TestPackageManager to install Rhino Render Next that bridges the gap to the _Render command for Cycles. It may be more intuitive for you to work with. Note though that for larger renders (say 4k and larger) there are some drawbacks timewise, but it should get you started at least.
In v7 Rhino Render will be handled by Cycles, you can test that already with the Rhino WIP.
Your test model isn’t particularly complex for Cycles, so you won’t see full 100% utilization yet. Hopefully in v7 once I rebase our patches onto the latest of upstream Cycles from Blender and switch to tiled rendering. That way the kernels can do ‘work stealing’, which would ensure better render device utilization.
Your test scene on my RTX 2070 at 941x526 took 1m29s for 1500 samples.
Very grateful to everyone for the extensive help, I apologize for the late reply. I’ve got a better understanding of how rendering works now, from recommendations I’ll look further into third party rendering software such as VRay.
