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Star-CCM+ Surface Wrapper Batch Cluster

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Old   August 3, 2021, 09:21
Question Star-CCM+ Surface Wrapper Batch Cluster
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Will Crawford-Jones
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Hi,

Is it possible to set up a surface wrapper in batch? What would be the code for doing this? My current script for the computer cluster is:

#!/bin/bash
#SBATCH --nodes=2
#SBATCH --time=03:00:00
#SBATCH --ntasks=80
#SBATCH --mail-type=ALL
#SBATCH --mail-user=...

module load starccm/15.06
module load openmpi/3.1.4/gcc

NODEFILE="$(pwd)/slurmhosts.$SLURM_JOB_ID.txt"
srun hostname -s &> $NODEFILE

#Mesh Domain
starccm+ -np $SLURM_NTASKS -machinefile $NODEFILE -load Large_Sim_parallel_mesh.sim -batch mesh

This works fine for meshing. Would it be possible to switch this for surface wrapper/ add surface wrapper beforehand such that it does surface wrapper and then meshing? I think perhaps I can use a java macro but cannot see info online/ in the Star-CCM+ manual about the macro for this. I haven't used Java macros yet.

As an additional question, is it possible to record a journal (like you can do in Fluent). This would record everything I do in the GUI which would make running multiple simulations (with minor differences) much easier.

Thanks!

Will
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Old   August 8, 2021, 08:02
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Will Crawford-Jones
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Anyone have any advice about this ?
Thank you
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Old   August 10, 2021, 06:03
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Will Crawford-Jones
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I've worked out how to do this now. For others that may be interested:

You can record all actions on the GUI as you can on Fluent and it records in Java- I couldn't spot this last time but it's near the top of the GUI. I simply did surface wrapper, mesh and save for a smaller case (smaller fluid domain and mesh). This can then be applied to other cases.

The batch script is:

#!/bin/bash
#Script to run a Starccm+ job
#set default resource requirements for job
#SBATCH --nodes=1
#SBATCH --time=00:10:00
#SBATCH --ntasks=4
#SBATCH --mail-type=ALL
#SBATCH --mail-user=...

#use starccm module to set up the environment for starccm+
module load starccm/15.06
module load openmpi/3.1.4/gcc

# Create our hosts file ala slurm
NODEFILE="$(pwd)/slurmhosts.$SLURM_JOB_ID.txt"
srun hostname -s &> $NODEFILE

#Surface Wrapper and Mesh Domain
starccm+ -np $SLURM_NTASKS -machinefile $NODEFILE -load Tetrahedral_Pack_4c.sim -batch Wrapper_Mesh_Save.java > Tetrahedral_Pack_4c_out

And that's it!

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batch, cluster computing, java macro, star-ccm, surface wrapper

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