Is headless mode installed by default?

[MateusLima2801]

Hi, there,

I'm running in Linux but I don't have NVIDIA GPUs for using headless mode, as described necessary in this issue.

I installed habitat-sim using:

conda install habitat-sim -c conda-forge -c aihabitat

After downloading the datasets, I had been trying to run the navigation example in the Quickstart Page and I ran into a problem with CUDA, below it follows all the output:

pybullet build time: Sep 25 2023 15:30:28
2023-10-04 10:56:32,022 Initializing dataset PointNav-v1
2023-10-04 10:56:44,264 initializing sim Sim-v0
Platform::WindowlessEglApplication::tryCreateContext(): unable to find CUDA device 0 among 2 EGL devices in total
WindowlessContext: Unable to create windowless context

Anyone can think of an explanation/a way to solve it?

[aclegg3]

Hey @MateusLima2801,

The version you linked should be a display mode, not headless. I've seen these issues before, they usually point to a driver or config issue locally.

@0mdc may also have some thoughts if you provide more system details if you want debug farther.

[0mdc]

Hey @MateusLima2801

Can you try using the environment variable MAGNUM_LOG=verbose when running Habitat? This may give additional hints.

I've seen these issues before, they usually point to a driver or config issue locally.

This corroborates with my experience. I've seen this issue occur a few times due to an invalid glvnd installation. I suspect that this could also occur if you're using a laptop with both an integrated and dedicated GPU, and the system fails to pick the appropriate driver/GPU.

[MateusLima2801]

Hi, guys, thanks for the feedback. I've set the environment variables through:

export MAGNUM_LOG=verbose MAGNUM_GPU_VALIDATION=ON

And what I had in return was:

2023-10-05 16:04:16,419 initializing sim Sim-v0
eglQueryDevicesEXT(): EGL_BAD_ALLOC error: In eglQueryDevicesEXT: Failed to allocate device list.
eglQueryDevicesEXT(): EGL_BAD_ALLOC error: In eglQueryDevicesEXT: Failed to allocate device list.
Platform::WindowlessEglApplication: eglQueryDeviceStringEXT(EGLDevice=0): EGL_EXT_device_drm EGL_EXT_device_drm_render_node
eglQueryDeviceAttribEXT(): eglQueryDeviceAttribEXT
Platform::WindowlessEglApplication: eglQueryDeviceStringEXT(EGLDevice=1): EGL_MESA_device_software EGL_EXT_device_drm_render_node
eglQueryDeviceAttribEXT(): eglQueryDeviceAttribEXT
Platform::WindowlessEglApplication::tryCreateContext(): unable to find CUDA device 0 among 2 EGL devices in total

My laptop has only an integrated GPU "Intel UHD Graphics 620" and I'm running on Ubuntu 23.04. Do you have any ideas on how to solve, @0mdc ?

What I don't get is why I'm having problems with windowless driver configuration when I'm running in display mode.

[0mdc]

Can you check if glvnd is installed on your machine? This library may fix your issue.

[MateusLima2801]

I followed instructions on glvnd installation and installed libglvnd-dev, but it was unsuccessfull over this issue. Running this Habitat script still gives the same output:

2023-10-11 10:46:51,623 Initializing dataset PointNav-v1
2023-10-11 10:46:51,932 initializing sim Sim-v0
eglQueryDevicesEXT(): EGL_BAD_ALLOC error: In eglQueryDevicesEXT: Failed to allocate device list.
eglQueryDevicesEXT(): EGL_BAD_ALLOC error: In eglQueryDevicesEXT: Failed to allocate device list.
Platform::WindowlessEglApplication: eglQueryDeviceStringEXT(EGLDevice=0): EGL_EXT_device_drm EGL_EXT_device_drm_render_node
eglQueryDeviceAttribEXT(): eglQueryDeviceAttribEXT
Platform::WindowlessEglApplication: eglQueryDeviceStringEXT(EGLDevice=1): EGL_MESA_device_software EGL_EXT_device_drm_render_node
eglQueryDeviceAttribEXT(): eglQueryDeviceAttribEXT
Platform::WindowlessEglApplication::tryCreateContext(): unable to find CUDA device 0 among 2 EGL devices in total
WindowlessContext: Unable to create windowless context

@0mdc, any more ideas?

[0mdc]

Hey @MateusLima2801,

Apologize for the late reply. Have you managed to find a solution?