It's hard to help with this problem as there is not really enough information (what machines, OS, how was SLURM configured and how was the job submitted). Isuggest that you start by contacting your cluster admin and see if they can look into the issue, as it is most likely not a problem with QuantumATK but rather a problem with how the machines and SLURM was configured. The IT admin will be typically be able to log into the specific nodes and see whether the process is running and see if there is actually any output.
