I’m working on an animation, so part of my workflow is running a windows batch file that calls blender to render the frames I need in headless mode. When I try switching to 2.8, I find that Blender uses only my CPU, not my GPU. While rendering, my CPU usage is pegged at 100% and my GPU is basically…

Excellent! That worked like a charm. Thank you very much for the help. To save the next person a step, the python lines I used were: bpy.context.preferences.addons['cycles'].preferences.compute_device_type = 'CUDA' bpy.context.preferences.addons['cycles'].preferences.devices[0].use = True

See this thread, there is a solution at the bottom that shows how to set Cuda devices in the command line [image] How to set GPU preferences remotely? Technical Support @kkar thank you so much, this was finally the solution. The lines I needed were actually the following…

Thank you for the link. Unfortunately, the property I am supposed to set appears not to exist. >>> bpy.context.user_preferences.addons['cycles'].preferences.compute_device_type = 'CUDA' Traceback (most recent call last): File "<console>", line 1, in <module> AttributeError: 'Context' object has n…

user_preferences named to preferences in 2.8

Glad I found this, now I know how to do it when 2.8 releases!

Me three. So, do we need to activate CUDA options to run headless in command line?

If CUDA is enabled in the settings when you are using the GUI, it’ll be enabled when run without the GUI.

Thank you very much. I’ve tried it on 2.83. Working spectacularly!

2.8 not using GPU, but only when headless

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kkar (kkar) February 19, 2019, 11:30pm 2

See this thread, there is a solution at the bottom that shows how to set Cuda devices in the command line