Requirements

The following requirements ensure CLEO’s build, compilation and execution on DKRZ’s Levante HPC. If they do not work, please contact us or open a new issue on our GitHub repository.

Of course other architectures, other compilers, versions etc. are possible, but we leave this for you to discover.

Compilers

A C++ compiler with the C++20 standard library and MPI is the absolute minimum.

On Levante you can use the latest MPI compiler wrappers for the gcc compilers. At the time of writing this is gcc 11.2.0, e.g.

$ module load gcc/11.2.0-gcc-11.2.0 openmpi/4.1.2-gcc-11.2.0

CMake

CMake minimum version 3.18.0.

On Levante the default version is above 3.26.0 so this should be fine. In case you have trouble, you can use spack to find (and load) a higher version yourself (spack find cmake).

Python

We advise you to create an environment using our envirnoment.yaml file. This environment should automatically include all the additional packages you may require. If not, please contact us or open a new issue on our GitHub repository.

You can install Python packages to an existing Conda (or Micromamba) environment via:

$ micromamba env create --file=environment.yaml
$ micromamba activate [your environment]

YAC

YAC is one of the external libraries of CLEO, which itself is dependent on YAXT. You will need to have both installed somewhere in order to compile CLEO. Please see CLEO’s documentation for more details.