Unable to use GPU for rendering

[prasoongoyal]

I can run an example script using xvfb: xvfb-run python examples/example_baxter_pick_and_pass.py, but this doesn't use the GPU for rendering (as expected).

When I try running it without xvfb -- python examples/example_baxter_pick_and_pass.py, I get the following error:

[CoppeliaSim:loadinfo]   CoppeliaSim V4.1.0., (rev. 1), flavor: 1
[CoppeliaSim:loadinfo]   Legacy machine ID: 5000-9DEB-FFC4-9CEC-F7E3-841D
[CoppeliaSim:loadinfo]   Machine ID: C28C-736A-596C-0000-167E-0101
qt.qpa.xcb: could not connect to display 
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "/path/to/CoppeliaSim_Edu_V4_1_0_Ubuntu18_04/" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, webgl, xcb.

Aborted (core dumped)

Not sure how to fix this.

[komms]

It could be the display problem. Assign right display to the user might solve.

[prasoongoyal]

Thanks for the response! To clarify, does this need an X server, or can I use the GPU for rendering without X as well (I'm on a server that doesn't allow running X).

[komms]

afaik Xorg is needed and you need to configure it. I'm not sure about whether one should use GPU or CPU on the server.

[prasoongoyal]

Thanks. I guess leave this open for a bit to see if someone else might be able to add something about using GPU for rendering without X.

[kamaleshrathinam]

I have the same issue, trying to run Pyrep on Google Cloud for faster Rendering

[stepjam]

You can now do GPU rendering: https://github.com/stepjam/PyRep/blob/master/README.md#running-headless