PyOpenCL and PyCUDA compatibility

[[e-mail]]

python-pycuda and python-pyopencl cannot be installed simultaneously in Ubuntu 14.04 because they create conflicts in apt (using Synaptic to try to install).

python-pycuda:
  Installed: 2013.1.1+git20140310-1ubuntu1
  Candidate: 2013.1.1+git20140310-1ubuntu1
  Version table:
 *** 2013.1.1+git20140310-1ubuntu1 0
        500 http://ubuntu.eecs.wsu.edu/ trusty/multiverse amd64 Packages
        500 http://archive.ubuntu.com/ubuntu/ trusty/multiverse amd64 Packages
        100 /var/lib/dpkg/status

python-pyopencl:
  Installed: 2013.2-1build1
  Candidate: 2013.2-1build1
  Version table:
 *** 2013.2-1build1 0
        500 http://ubuntu.eecs.wsu.edu/ trusty/multiverse amd64 Packages
        500 http://archive.ubuntu.com/ubuntu/ trusty/multiverse amd64 Packages
        100 /var/lib/dpkg/status

[[e-mail] (larsoner)]

I meant python-pycuda and python-pyopencl. Both are often used by people working on computational problems, so it would be good to have them installable simultaneously. Also, I am running the NVIDIA drivers, if that matters.

[Graham Inggs (ginggs)]

I am able to install python-pycuda and python-pyopencl together.
What error message do you see?

[[e-mail] (larsoner)]

After removing everything related to CUDA and OpenCL (everything with those names in Synaptic), I do `sudo apt-get install python-pycuda python-pyopencl` and get:

The following packages have unmet dependencies:
 python-pyopencl : Depends: libopencl-1.1-1
                   Depends: libopencl-1.2-1
                   Depends: ocl-icd-libopencl1 but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

If I only do `sudo apt-get install python-pycuda`, it installs. But then for `sudo apt-get install python-pyopencl` I get:

The following packages have unmet dependencies:
 python-pyopencl : Depends: libopencl-1.1-1
                   Depends: libopencl-1.2-1
                   Depends: ocl-icd-libopencl1 but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

If I then uninstall everything related to OpenCL and CUDA (by searching for these names in Synaptic) again, and do `sudo apt-get install python-pyopencl`, it succeeds. If I then do `sudo apt-get install python-pycuda` I get:

The following packages have unmet dependencies:
 python-pycuda : Depends: nvidia-cuda-toolkit but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

Let me know if there are other commands I should run to help diagnose why the package says its broken.

[Graham Inggs (ginggs)]

I think this may be related to LP: #1247736. Please try the following steps (after removing everything CUDA and OpenCL related):

sudo apt-get install nvidia-cuda-toolkit
sudo apt-get install python-pycuda
sudo apt-get install ocl-icd-opencl-dev (this will remove nvidia-libopencl1-* and nvidia-opencl-dev)
sudo apt-get install python-pyopencl

[[e-mail] (larsoner)]

That did indeed work, so this appears to be a duplicate bug. Thanks for the help!