Tutorial Colab raises GLEW initalization error when rendering

The tutorial colab notebook crashes as soon as rendering is called:

from dm_control import suite env = suite.load('cartpole', 'swingup') pixels = env.physics.render()

The following error rises: CRITICAL:absl:GLEW initalization error: Missing GL version

I tried different instances with and without GPU. After some research through the issues here and https://github.com/openai/mujoco-py/issues/268, I still wasn’t able to solve it.

Thanks for your help.

[alimuldal]

I’m glad that works for you. It does mean that you’d be sharing the GPU if you’re using it for training/inference as well as rendering, which may or may not be a bad thing. I will leave this issue open anyway, since we should ideally support non-hardware rendering as well.

[alimuldal]

Thanks, that is useful information - I am able to reproduce the problem. I am not yet sure what has changed, as this certainly used to work on cloud kernels. Can you run a local kernel as a temporary workaround?