Solutions

submit the parallel job

The sortJob partition hs a maximum node limit of 2 nodes. We can see this with the following command:

scontrol show partition shortJob

configuring parallel jobs

#SBATCH --ntasks=48
#SBATCH --ntasks-per-node=16

mpirun -np 48 hello_world_mpi

We have 16 processes on each of three nodes, giving us 48 processes in total.