Reducing time and computing costs in EC-Earth: an automatic load-balancing approach for coupled Earth system models

Palomas, Sergi; Acosta, Mario C.; Utrera, Gladys; Tourigny, Etienne

doi:https://doi.org/10.5194/gmd-18-3661-2025

Articles | Volume 18, issue 12

https://doi.org/10.5194/gmd-18-3661-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/gmd-18-3661-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 12

Development and technical paper

|

20 Jun 2025

Development and technical paper |

| 20 Jun 2025

Reducing time and computing costs in EC-Earth: an automatic load-balancing approach for coupled Earth system models

Sergi Palomas, Mario C. Acosta, Gladys Utrera, and Etienne Tourigny

Model code and software

auto-lb_prediction-script v1.0 Sergi Palomas https://doi.org/10.5281/zenodo.14163512

Python package Autosubmit workflow manager https://pypi.org/project/autosubmit/

Autosubmit Autosubmit documentation and user guide https://autosubmit.readthedocs.io/en/master/

Short summary

We present an automatic tool that optimizes resource distribution in coupled climate models, enhancing speed and reducing computational costs without requiring expert knowledge. Users can set energy/time criteria or limit resource usage. Tested on various European Community Earth System Model (EC-Earth) configurations and high-performance computing (HPC) platforms, it achieved up to 34 % faster simulations with fewer resources.