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This method is the preferred way to run OpenIFS, as it is more efficient and it allows more flexibility in using the available hardware resources.
- A job wrapper script that is suitable for the locally available batch scheduler needs to be used to call the oifs-run script.
- We include the example job wrapper script run.ecmwf-hpc2020.job which is suitable for the ECMWF hpc2020 Atos HPC. It uses the SLURM batch job scheduler.
- This script needs to be located inside your experiment directory
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- .
- It should be edited as required
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- ; the default settings request 8 nodes on ECMWF hpc2020, with a total of 256 MPI tasks and 4 OpenMP threads.
- You will also need to set Set the appropriate path for your OpenIFS platform configuration script.
The LAUNCH command here is only for batch job submission is set to "srun" without any further options, as the . All required parallel environment settings are provided through the SLURM script headers.
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# run as batch job: cd $PERM/i4xc/2016092500 sbatch ./run.ecmwf-hpc2020.job |
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