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+# Build EC-EARTH on LUCIA
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+
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+EC-Earth is a global coupled climate model. It is developed by a consortium of European research institutions.
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+The goal of this project is to adapt this model for our needs in ELIC: install, run management, etc.
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+
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+## System requirements
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+
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+See : [how to build **iompi** toolchain on LUCIA](../softs.md)
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+
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+> !!! skip this part : for PY only !!!
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+
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+## User requirements
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+
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+First, load the required env modules
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+
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+```bash
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+module load craype-x86-milan
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+module load PrgEnv-intel/8.3.3
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+module load Perl/.5.34.1-GCCcore-11.3.0
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+MODULEPATH=$MODULEPATH:/gpfs/projects/acad/ecearth/softs/easybuild/modules/all
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+module load netCDF-Fortran/4.6.0-iompi-2022.05
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+module load imkl/2022.1.0 OpenJPEG/2.5.0-GCCcore-11.3.0 grib_api/1.24.0-iompi-2022.05
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+```
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+
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+Then, clone this EC-Earth fork repository (3.3.3.2)
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+
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+```bash
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+mkdir -p ~/models
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+git clone https://gogs.elic.ucl.ac.be/pbarriat/ecearth3.git ecearth_3.3.3.2
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+```
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+
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+## Compile
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+
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+* Compile **oasis**:
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+
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+```bash
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+cd ~/models/ecearth_3.3.3.2/sources/oasis3-mct/util/make_dir
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+make BUILD_ARCH=ecconf -f TopMakefileOasis3
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+```
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+
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+* Compile **IFS**:
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+
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+```bash
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+cd ~/models/ecearth_3.3.3.2/sources/ifs-36r4
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+./makeifs -j 4
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+```
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+
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+* Compile **xios**:
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+
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+```bash
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+cd ~/models/ecearth_3.3.3.2/sources/xios-2.5
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+./make_xios --prod --arch ecconf --use_oasis oasis3_mct --netcdf_lib netcdf4_par -j 4
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+```
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+
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+* Compile **NEMO**:
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+
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+```bash
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+cd ~/models/ecearth_3.3.3.2/sources/nemo-3.6/CONFIG
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+./makenemo -n ORCA1L75_LIM3 -m ecconf -j4
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+```
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+
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+* Compile **runoff-mapper**:
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+
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+```bash
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+cd ~/models/ecearth_3.3.3.2/sources/runoff-mapper/src
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+make
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+```
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+
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+## Run
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+
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+Check the `ecconf.cfg` the first job script `EC00.sh` and submit
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+
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+```bash
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+cd ~/models/ecearth_3.3.3.2/runtime/classic
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+sbatch EC00.sh
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+```
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+
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+### Data
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+
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+I prepared all the input files in `/gpfs/scratch/acad/ecearth/data/bsc32/` directory.
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+
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+### Very first try
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+
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+| CC | Release | RES | XIOS | NEMO | IFS | #NODES | WTIME per MONTH |
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+| ----- | --- | ---- | ------ | -------------- | ------ | ------- | -------------------- |
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+| `EC00.sh` | iompi/2022.05 | T255L91_ORCA1L75 | 1 | 86 | 320 | 3 | **121min** |
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+| `EC01.sh` | iompi/2022.05 | T255L91_ORCA1L75 | 3 | 128 | 288 | 4 | **??min** |
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+| `EC02.sh` | iompi/2022.05 | T255L91_ORCA1L75 | 1 | 128 | 512 | 6 | **83min** |
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+
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+- 1 year (1850), restart every year
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+
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+## Contributors
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+
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+- ELIC members [@pbarriat](https://gogs.elic.ucl.ac.be/pbarriat)
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