How to run OpenCL + OpenGL inside a Docker container? - docker

Question

The aim is to run an OpenCL/OpenGL (interop) app inside a docker container. But I have not been successful yet.
Intro
I have laptop with an NVidia graphics card so I thought leveraging on NVidia Dockerfiles [1,2] would be a good starting point.
The following Dockerfile:
# Dockerfile to run OpenGL app
FROM nvidia/opengl:1.0-glvnd-runtime-ubuntu16.04
ENV NVIDIA_DRIVER_CAPABILITIES ${NVIDIA_DRIVER_CAPABILITIES},display
RUN apt-get update && apt-get install -y --no-install-recommends \
mesa-utils && \
rm -rf /var/lib/apt/lists/*
works quite well, and I was able to run glxgears.
Running OpenCL on its own container was no big deal either:
# Dockerfile to run OpenCL app
FROM nvidia/opengl:1.0-glvnd-runtime-ubuntu16.04
RUN apt-get update && apt-get install -y --no-install-recommends \
ocl-icd-libopencl1 \
clinfo && \
rm -rf /var/lib/apt/lists/*
RUN mkdir -p /etc/OpenCL/vendors && \
echo "libnvidia-opencl.so.1" > /etc/OpenCL/vendors/nvidia.icd
ENV NVIDIA_VISIBLE_DEVICES all
ENV NVIDIA_DRIVER_CAPABILITIES compute,utility
and clinfo successfully shows information about my device.
Attempt
Finally here's my attempt at creating a container with both OpenGL and OpenCL drivers:
# Dockerfile mixing OpenGL and OpenCL
FROM nvidia/opengl:1.0-glvnd-runtime-ubuntu16.04
ENV NVIDIA_DRIVER_CAPABILITIES ${NVIDIA_DRIVER_CAPABILITIES},display
RUN apt-get update && apt-get install -y --no-install-recommends \
mesa-utils \
ocl-icd-libopencl1 \
clinfo && \
rm -rf /var/lib/apt/lists/*
RUN mkdir -p /etc/OpenCL/vendors && \
echo "libnvidia-opencl.so.1" > /etc/OpenCL/vendors/nvidia.icd
ENV NVIDIA_VISIBLE_DEVICES all
ENV NVIDIA_DRIVER_CAPABILITIES compute,utility
And now, although clinfo still prints OpenCL device information, glxgears on the other hand fails with the following error:
Error: couldn't get an RGB, Double-buffered visual
Any idea how to make this work? Thanks in advance.
References
[1] https://gitlab.com/nvidia/opencl/blob/ubuntu16.04/devel/Dockerfile
[2] https://gitlab.com/nvidia/opencl/blob/ubuntu16.04/runtime/Dockerfile

Answer 1

ENV NVIDIA_DRIVER_CAPABILITIES compute,utility
You forgot the capability display.

Answer 2

What did work for me is the following
STEP 1: added at the end of the Dockerfile the following two lines
ENV NVIDIA_VISIBLE_DEVICES all
ENV NVIDIA_DRIVER_CAPABILITIES compute,utility,display
STEP 2: to run the container
$ sudo xhost +local:root
$ docker run --gpus all -it --rm --name container_name \
-v /tmp/.X11-unix:/tmp/.X11-unix \
-e DISPLAY=$DISPLAY \
-e QT_X11_NO_MITSHM=1 \
--net=host \
image_name bash