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Worked Example:

We explain the model installation and the process of running of a forecast experiment on the ECMWF Atos Sequana XH2000 HPC facility (hpc2020). 

• All model sources, data files and configuration scripts that are required for the worked example experiment described in this guide can be found on the ECMWF web site here: https://sites.ecmwf.int/openifs/openifs-data/ (only registered OpenIFS users will be given access)
• For users with access to the ECMWF HPC facility we provide an internal filepath location for the data packages (without the model source code). 
• In our example the model will be installed into $HOME/openifs-48r1/ as a default location.
• The example forecast experiment will be set up in directory $OIFS_EXPT/ab2a/

It is important to note that the installation process on hpc2020 will not directly translate to alternative systems. To address this we present details about a docker install in the last section of this guide.