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This tutorial explains how to create a new experiment from an existing one by copying the initial files and setting up the experiment directory.

ECMWF HPCF

ECMWF operates a Cray based High Performance Computing Facility (HPCF). It consists of two identical Cray XC40 clusters with their own storage, but with equal access to the high performance working storage of the other cluster. This provides the benefit of having one very large system but the dual clusters add significantly to the resiliency of the system.

For more details about the ECMWF HPCF, please see: http://www.ecmwf.int/en/computing/our-facilities/supercomputer

All the OpenIFS experiments will make use of the ECMWF HPCF. During the workshop you will login to the 'front-end' machines and submit 'batch job's to the HPCF.

Scripts are provided and described below to make preparing and submitting ensemble batch jobs easier. Useful commands are listed at the end of this tutorial.

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