CODEWITHSUNDEEP
c++ubuntujupytercling
Alessandro Gentile
Alessandro Gentile

Reputation: 63

Cling Kernel for Jupyter on Ubuntu

I built Cling on my laptop with Ubuntu 15.04 following the instructions given on https://github.com/root-mirror/cling#jupyter because I wanted to use the Cling kernel for Jupyter. I installed Jupyter, I checked that Cling is in my PATH, but when I type the command

jupyter kernelspec install cling

I get the following

OSError: [Errno 2] No such file or directory: 'cling'

Someone knows what's happening?

Upvotes: 6

Views: 5647

Answers (3)

Mina
Mina

Reputation: 1

I had the same problem just one minute ago, but I was able to solve it. I executed:

$ jupyter kernelspec install --user cling-cpp11

directly from /home/ubuntu_user/cling_ubuntu/share/cling/Jupyter/kernel.

The installation was successful, I moved to my working directory and called a jupyter notebook; it opened ok, but the kernel immediately died.

I thought the problem was that I have to install cling from where I was going to call the jupyter notebook, and I did so:

After uninstalling the kernel (also from /home/ubuntu_user/cling_ubuntu/share/cling/Jupyter/kernel) with:

jupyter kernelspec uninstall cling-cpp11

I repeated all the installation process:

Let's assume that you are usually going to call jupiter from /home/ubuntu_user, and you have your cling repository here

/home/ubuntu_user/cling_ubuntu.

Then:

  1. Go there: $ cd /home/ubuntu_user
  2. $ source activate my_env (I work with Anaconda, so I activated my environment)
  3. $ export PATH=/home/ubuntu_user/cling_ubuntu/bin:$PATH
  4. $ cd cling_ubuntu/share/cling/Jupyter/kernel/cling-cpp11
  5. $ pip install -e.

  6. Here you have to move to your future working directory.

    $ cd /home/ubuntu_user, type:

    $ jupyter kernelspec install --user cling_ubuntu/share/cling/Jupyter/kernel/cling-cpp11

    .. and the kernel is still alive and works ok.

Upvotes: 0

Adrien Thyrland
Adrien Thyrland

Reputation: 31

That's probably because in your folder 3 versions of Cling kernel are defined (C++11, C++14 and C++17).
So instead of trying to add Cling try to add one of those versions or all three if you want to.

enter image description here

Upvotes: 3

fnis
fnis

Reputation: 153

According to the source code, jupyter kernelspec install command expects the path to the directory containing kernel spec file (kernel.json) as an argument. So if you cloned the cling repository in, say, ~/cling/src, this should work:

jupyter kernelspec install ~/cling/src/tools/cling/tools/Jupyter/kernel/cling

Upvotes: 6

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