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This allows for the batch system to start the job only, when the appropriate number of licenses is available.
You can check the availability yourself: scontrol show lic
aa_t_a is a "ANSYS Academic Teaching License" with a maximum of 16 tasks.
aa_r is a "ANSYS Academic Research License" with 16 inclusive tasks. Research jobs with more than 16 tasks cost additional "aa_r_hpc" licenses.

The use of Ansys is restricted to members of the ansys user group. You can apply to become a group member at support[at]hlrn.de
Please note: Our licenses are restricted to students, PhD students, teachers and trainers of public institutions. They cannot be used in projects that are financed by industrial partners.

#!/bin/bash
#SBATCH -t 00:10:00
#SBATCH --nodes=2
#SBATCH --ntasks-per-node=40
#SBATCH -L ansys:80 ### Important: match number to (nodes)*(tasks-per-node)
#SBATCH -p medium40:test
#SBATCH --mail-type=ALL
#SBATCH --job-name=StaticMixer

module load ansys/2019r2

## create list of hosts in calculation
srun hostname -s > hostlist.$SLURM_JOB_ID

## format the host list for cfx
cfxhostlist=`tr '\n' ',' < hostlist.$SLURM_JOB_ID`

echo $cfxhostlist

# start the solver
cfx5solve -def StaticMixer.def -start-method "Intel MPI Distributed Parallel"\
-double -par-dist "$cfxhostlist"

echo '#################### CFX finished ############'
sleep 2
rm hostlist.$SLURM_JOB_ID

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