Has anybody successfully installed OpenAI gym on Jetson Xavier NX?

I’m trying to install OpenAI gym (https://gym.openai.com/) on my Jetson Xavier NX and was wondering if anyone was successful in getting it to run on their setup, and if so what configurations they used, thanks!


You can find some information below:


Hi @peter.moser, the jetson-reinforcement is outdated, although I hope to update it in the future.

However I was able to confirm that gym installed via pip3. I installed it into the l4t-ml container because that container already includes many of the dependencies that gym package needs (like scipy, ect)

This is how I was able to install it:

sudo docker run -it --rm --net=host --runtime nvidia nvcr.io/nvidia/l4t-ml:r32.5.0-py3
pip3 install gym

Hi Dusty, thank you for your reply! I was able to install OpenAI gym on the container you specified and run it. Everything works except for the rendering part. I was following some of the instructions on this post: python - How to run OpenAI Gym .render() over a server - Stack Overflow
but was still not able to get it to render properly. Would you have any advice on how to get gym.render() to work when running in docker?

I also tried to build from source on the Jetson Xavier NX (from jetson-reinforcement git library). There were a couple of errors during the build process and it then fails to locate the torch module when running the intro-pytorch notebook. Does jetson-reinforcement run on the Jetson Xavier NX?


The error occurs since gym tries to enable the window but fails.

We can successfully enable the gym.render() after export the DISPLAY variable.
Below is the detailed information for your reference:

Outside of docker
$ export DISPLAY=:0
$ xhost +
$ sudo docker run -it --rm --net=host --runtime nvidia nvcr.io/nvidia/l4t-ml:r32.5.0-py3
Within docker
# export DISPLAY=:0
# pip3 install gym
# python3
Python 3.6.9 (default, Oct  8 2020, 12:12:24)
[GCC 8.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import gym
>>> env = gym.make('CartPole-v0')
>>> env.reset()
array([-0.01348513, -0.01656567, -0.010208  ,  0.02606423])
>>> env.render()


Hi, set the DISPLAY variable outside and inside of docker, everything runs fine up to the command env.render() where the error message below is displayed:

>>> env.render()
No protocol specified
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python3.6/dist-packages/gym/core.py", line 240, in render
    return self.env.render(mode, **kwargs)
  File "/usr/local/lib/python3.6/dist-packages/gym/envs/classic_control/cartpole.py", line 174, in render
    from gym.envs.classic_control import rendering
  File "/usr/local/lib/python3.6/dist-packages/gym/envs/classic_control/rendering.py", line 25, in <module>
    from pyglet.gl import *
  File "/usr/local/lib/python3.6/dist-packages/pyglet/gl/__init__.py", line 232, in <module>
    import pyglet.window
  File "/usr/local/lib/python3.6/dist-packages/pyglet/window/__init__.py", line 1899, in <module>
  File "/usr/local/lib/python3.6/dist-packages/pyglet/gl/__init__.py", line 206, in _create_shadow_window
    _shadow_window = Window(width=1, height=1, visible=False)
  File "/usr/local/lib/python3.6/dist-packages/pyglet/window/xlib/__init__.py", line 173, in __init__
    super(XlibWindow, self).__init__(*args, **kwargs)
  File "/usr/local/lib/python3.6/dist-packages/pyglet/window/__init__.py", line 585, in __init__
    display = pyglet.canvas.get_display()
  File "/usr/local/lib/python3.6/dist-packages/pyglet/canvas/__init__.py", line 94, in get_display
    return Display()
  File "/usr/local/lib/python3.6/dist-packages/pyglet/canvas/xlib.py", line 123, in __init__
    raise NoSuchDisplayException('Cannot connect to "%s"' % name)
pyglet.canvas.xlib.NoSuchDisplayException: Cannot connect to "None"

There is no update from you for a period, assuming this is not an issue any more.
Hence we are closing this topic. If need further support, please open a new one.


NoSuchDisplayException: Cannot connect to “None”

Do you have a display device that is connected to Jetson?
If yes, could you check if it is on :0.

Could you also share the output log when you running xhost +?


This topic was automatically closed 60 days after the last reply. New replies are no longer allowed.