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Worked Example: We explain the model installation and the process of running of a forecast experiment for on the ECMWF HPC facility (hpc2020 Atos).
It is important to note that the installation process on hpc2020 will not directly translate to alternative systems |
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cd $OIFS_HOME ./bin/openifs-test.sh -cbt |
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It is normal to see warnings during the build process. |
The script builds the model binaries for the selected compiler and will run the ifs-test t21 and t42 tests.
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where
-c
cleans up the directory, i.e, remove any existing build, source, ecbundle directories-b
builds- the OpenIFS double and single precision master executables (ifsMASTER.DP and ifsMASTER.SP, respectively) , which are used to run 3-D OpenIFS. The executables are located in
$OIFS_HOME/build/bin
. - the double and single precision Single Column Model (SCM) executables (MASTER_scm.DP and MASTER_scm.SP, respectively), which are used to run the SCM derived from OpenIFS. The executables are located in
$OIFS_HOME/build/bin
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- the OpenIFS double and single precision master executables (ifsMASTER.DP and ifsMASTER.SP, respectively) , which are used to run 3-D OpenIFS. The executables are located in
-t
will run the ifs-test t21 tests, which comprise of- 21 3-D OpenIFS forecast-only tests with and without chemistry
- 1 SCM test (based on TWP-ICE)
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By default, on hpc2020, OpenIFS will be built using the intel compiler. OpenIFS will also build with GNU, if this is required then the user should execute the following command
This will load the compiler environment for gnu 11.2. |
If everything has worked correctly then all tests should have passed and the script returns the following
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[INFO]: Good news - ctest has passed
openifs is ready for experiment and SCM testing
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END ifstest on OpenIFS build |
Set up a forecast experiment
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