To use the LUCIA tool, you need first to activate some output. This is done
with the LUCIA entry in either:

  runtime/classic/config-run.xml
or
  runtime/autosubmit/config-run.xml

You have three options (-1, -2 and -3), but "-2" is not supported yet in
EC-Earth3. 

* If you use the legacy option (-1), then follow the instructions in the
  (original) README. It boils down to:

    # compile the tool
    cd sources/oasis3-mct/util/lucia
    F90=ifort ./lucia -c

    # copy it to your experiment run directory
    cp lucia.exe    <RUNDIR>
    cp lucia        <RUNDIR>
    cp balance.gnu  <RUNDIR>

    # apply it
    cd <RUNDIR>
    lucia

* To use the Lucia-Lite tool (option -3), follow the instructions in
  lucia-lite_README.md. Essentially:

    # copy the tool to your experiment run directory
    cd sources/oasis3-mct/util/lucia
    cp lucia-lite.py  <RUNDIR>

    # apply it
    cd <RUNDIR>
    python3 lucia_lite.py average 10 10 40