Licallo/Software-Environment.md

@@ -5,5 +5,22 @@ The software environment is managed through [lmod](https://lmod.readthedocs.io/e
 
 ## Available modules 
 
-### Dependent modules
+Note that `module avail` does not display all the potentially available modules, only those available with the currently loaded modules.
 
+For example, let say the module `hdf5` depends on the module `intel-gnu8-runtime`, it will only appear once `intel-gnu8-runtime` is loaded:
+
+```
+$ module purge
+$ module avail
+--------------------------------------------------- /opt/ohpc/pub/oca/modulefiles ---------------------------------------------------
+   intel-gnu8-runtime/19.0.5.281
+[...]
+$ module load intel-gnu8-runtime
+$ module avail
+---------------------------------------------- /opt/ohpc/pub/oca/moduledeps/intel-gnu8 ----------------------------------------------
+   boost/1.73.0    hdf5/1.12.0    impi/2019.5.281    intelpython3
+--------------------------------------------------- /opt/ohpc/pub/oca/modulefiles ---------------------------------------------------
+   intel-gnu8-runtime/19.0.5.281 (L)
+[...]
+$
+```