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• This file can be located anywhere on your file system, however the recommended default location would be somewhere in $OIFS_HOME/bin installation.
• We provide a template for this configuration file in $OIFS_HOME/bin/oifs48r1oifs-config.edit-_me.sh.
• You should edit this file and update the path set in variable OIFS_HOME with your installation's path.
• This file sets global variables for your model installation, depending on your local system, and it will need to be "sourced" prior to running the model.

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source /path/to/file/location/oifs48r1oifs-config.edit-_me.sh

We recommend to include this command in your Linux shell startup configuration (e.g. in .bashrc). 

 Build OpenIFS

In the next step the model binary executable (and other helper programs) will be built.

OpenIFS build system

In contrast to earlier model versions, the building of OpenIFS 48r1 is no longer based on the FCM configuration manager, but uses from now on the ecbuild ECMWF build system that is also used for the ECMWF IFS model, and which uses CMake at its core.

The above command should also be include in any batch job scripts that are intended to run OpenIFS.

 Build OpenIFS

In the next step the model binary executable (and other helper programs) will be built.

OpenIFS build system

In contrast to earlier model versions, the building of OpenIFS 48r1 is no longer based on the FCM configuration manager, but uses from now on the ecbuild ECMWF build system that is also used for the ECMWF IFS model, and which uses CMake at its core.

OpenIFS 48r1 is further OpenIFS 48r1 is further distributed with a software bundle which automatically installs many required software packages during the build process, such as for instance ecbuild, ecCodes, metkit, etc. Hence, a separate installation of these libraries is no longer required as they have now become part of the OpenIFS distribution. 

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• Edit the script and in line 16 set the location of your $OIFS_HOME directory which is the location where you have extracted the git repository and where this script should be located.
• The usage of the script is shown with the command:  openifs-test.sh -h
• The option -e defines the compiler environment (intel or gnu). The default is intel. 

Run the build process and the tests using the following command:

cd $OIFS_HOME
./bin/openifs-test.sh -cbt

The script builds the model binaries for the selected compiler and will run the ifs-test t21 and t42 tests.

  Set up the platform configuration file

You will need to set up a platform configuration file for your OpenIFS installation.

• This file can be located anywhere but the recommended location would be somewhere inside your $OIFS_HOME installation.
• This file sets global variables for your model installation, depending on your local system, and it will need to be "sourced" prior to running the model.
• We provide a template for this configuration file in $OIFS_HOME/bin/oifs48r1-config.sh. You should edit this file and update variable OIFS_HOME with your installation's path.

• or gnu). The default is intel. 

Run the build process and the tests using the following command:We recommend that you include the following command in your shell configuration file (e.g. .bashrc): 

sourcecd /path/to/configfile/oifs48r1-config.sh

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$OIFS_HOME
./bin/openifs-test.sh -cbt

The script builds the model binaries for the selected compiler and will run the ifs-test t21 and t42 tests. 

 Set up a forecast experiment

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