Monsoon has a number of GPUs that are available for use. In order to use the GPUs the slurm group/account you are assigned to must have GPU access. Once access is allowed you may then request GPU access for your Monsoon jobs.
You may use either -Gn or --gres=gpu:tesla:n on an srun statement or as an SBATCH option in a jobscript, where n is the number of gpus you require. So, -G1 or --gres=gpu:testla:1 to ask for 1 gpu.