Serial jobs use only a single CPU-core.
First, let us write a simple Python program.
# This program prints Hello, world!
print('Hello, World!')
Save it as hello.py.
Now we will write a SLURM script to run our serial Python code as a job:
#!/bin/bash
#SBATCH --job-name="Hello World" # a name for your job
#SBATCH --partition=peregrine-cpu # partition to which job should be submitted
#SBATCH --qos=cpu_debug # qos type
#SBATCH --nodes=1 # node count
#SBATCH --ntasks=1 # total number of tasks across all nodes
#SBATCH --cpus-per-task=1 # cpu-cores per task
#SBATCH --mem-per-cpu=2G # memory per cpu-core
#SBATCH --time=00:01:00 # total run time limit (HH:MM:SS)
module purge
module load python/anaconda
srun python3 hello.py
Save it as helloworld-python.sh and submit using the command
sbatch helloworld-python.sh
The result will be saved in a file named slurm-####.out and should look like
Hello, World!