python gym-DQN.py => RuntimeError: torch was compiled without numpy support

[TheRobotStudio]

Hello,
After successfully build, with a fresh install of a Jetpack 3.0 on a TX2, when I try to run gym-DQN.py, I got this error:

$ python gym-DQN.py 
[2017-07-21 14:08:36,674] Making new env: CartPole-v0
Traceback (most recent call last):
  File "gym-DQN.py", line 280, in <module>
    plt.imshow(get_screen().cpu().squeeze(0).permute(1, 2, 0).numpy(),
  File "gym-DQN.py", line 274, in get_screen
    screen = torch.from_numpy(screen)
RuntimeError: torch was compiled without numpy support
/usr/local/lib/python2.7/dist-packages/matplotlib/backends/backend_gtk3.py:215: Warning: Source ID 8 was not found when attempting to remove it
  GLib.source_remove(self._idle_draw_id)

Also I had to install matplotlib for python:
$ sudo pip install --upgrade matplotlib
But it seems there is a problem with numpy.
Any idea on how to solve this issue ? Is there a list of pyhton modules that must be installed before the build ?
Thanks!

[dusty-nv]

Hi, sorry for the problem, perhaps the pre-install command to install numpy is missing (only used in the standalone examples). I guess my system already had it from before. Can you try installing it like this? sudo pip install numpy Then rm build and make a new build. Hope that helps, Dustin On Jul 21, 2017 8:20 AM, Cyril <notifications@github.com> wrote: Hello, After successfully build, with a fresh install of a Jetpack 3.0 on a TX2, when I try to run gym-DQN.py, I got this error: $ python gym-DQN.py [2017-07-21 14:08:36,674] Making new env: CartPole-v0 Traceback (most recent call last): File "gym-DQN.py", line 280, in <module> plt.imshow(get_screen().cpu().squeeze(0).permute(1, 2, 0).numpy(), File "gym-DQN.py", line 274, in get_screen screen = torch.from_numpy(screen) RuntimeError: torch was compiled without numpy support /usr/local/lib/python2.7/dist-packages/matplotlib/backends/backend_gtk3.py:215: Warning: Source ID 8 was not found when attempting to remove it GLib.source_remove(self._idle_draw_id) Also I had to install matplotlib for python: $ sudo pip install --upgrade matplotlib But it seems there is a problem with numpy. Any idea on how to solve this issue ? Is there a list of pyhton modules that must be installed before the build ? Thanks! — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub<#6>, or mute the thread<https://github.com/notifications/unsubscribe-auth/AOpDK_nNbrLIJejILsDx6v8qH7vi8hIdks5sQJeLgaJpZM4OfVTV>.

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[TheRobotStudio]

Thanks Dustin,
After doing that, I got the error message:
TypeError: Couldn't find foreign struct converter for 'cairo.Context'
I could solve this installing this, in case some people has this issue link:
sudo apt-get install python-gi-cairo
And now the demo is working!

[dusty-nv]

OK thank you Cyril, I will add these commands to the pre-build script. On Jul 21, 2017 10:45 AM, Cyril <notifications@github.com> wrote: Thanks Dustin, After doing that, I got the error message: TypeError: Couldn't find foreign struct converter for 'cairo.Context' I could solve this installing this, in case some people has this issue link<rbgirshick/py-faster-rcnn#221>: sudo apt-get install python-gi-cairo And now the demo is working! — You are receiving this because you commented. Reply to this email directly, view it on GitHub<#6 (comment)>, or mute the thread<https://github.com/notifications/unsubscribe-auth/AOpDK_KGB5mJydKohpmxfV1oQsmwMfyYks5sQLlfgaJpZM4OfVTV>.

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