Installing ROOT using a python virtual environment
Sign in to LENGAU and then ssh to dtn
Ensure that your base conda environment has been initialised for your user on LENGAU. If it has already been initialized you should observe (base) alongside your user ID. This means that .bashrc file has been modified to incorporate conda directives. If not start here: https://wiki.chpc.ac.za/guide:python?s[]=%2Apython%2A
Sanitize your shell environment and then load the BIOMODULES module:
module purge
module add chpc/BIOMODULES
Here is how you create a new environment with ROOT preinstalled:
conda create -n root_env root -c conda-forge
This will make a new environment called root_env, and install ROOT into it. Installation times may vary. When I did it it took between 3-5 minutes…
When the installation completes successfully, you can list all your environments and their paths using:
conda info --envs
The full path to the root installation amongst others will appear.
Check whether the ROOT package has been installed, if successfully installed, it should appear in the list of packages:
conda list
Activate the conda ROOT environment:
conda activate root_env
Launch ROOT:
root
Deactivate the environment when done using:
conda deactivate
