wiki.chpc.ac.za

ROOT https://https://root.cern/about/CERN is a software framework born at CERN, at the heart of the research on high-energy physics. Physicists use ROOT applications to analyze their data or to perform simulations.

1. Access LENGAU and Connect via SSH
2. Sign in to LENGAU and establish an SSH connection to the dtn node.

Ensure your base Conda environment is initialized:

1. If initialized, (base) will appear next to your user ID, indicating that your .bashrc file has been set up to load Conda automatically
2. If Conda is not initialized, follow the instructions in theCHPC Python Guide.

Purge any loaded modules and load the BIOMODULES module:

 module purge
 module add chpc/BIOMODULES
 

conda create -n root_env root -c conda-forge

conda info --envs
conda list

conda activate root_env

root

conda deactivate

This is just a simple example which will be improved as testing commences:

root.qsub

#!/bin/bash 
#PBS -P projectid
#PBS -l select=3:ncpus=24:mpiprocs=24:nodetype=haswell_reg
#PBS -q normal
#PBS -l walltime=01:00:00
#PBS -o /mnt/lustre/users/username/rootJobs/job01/stdout
#PBS -e /mnt/lustre/users/username/rootJobs/job01/stderr
#PBS -m abe
#PBS -M username@email.co.za
### Activate the conda ROOT environment: 
 conda activate root_env
##### Running commands
# Set this environment variable explicitly.
export PBS_JOBDIR=/mnt/lustre/users/username/rootJobs/job01
# Explicitly change to the job directory
cd $PBS_JOBDIR
nproc=`cat $PBS_NODEFILE | wc -l`
exe=root
mpirun -np $nproc $exe > root.out