Geoscientific Model Development
Geoscientific Model Development
GMD
Articles | Volume 19, issue 17
Articles | Volume 19, issue 17
https://doi.org/10.5194/gmd-19-8501-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-19-8501-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 17
Development and technical paper
 | 
11 Sep 2026
Development and technical paper |  | 11 Sep 2026

Task aggregation as a strategy to optimize Earth System Model workflows in HPC: assessing real scenarios with EC-Earth

Pablo Goitia, Manuel G. Marciani, Miguel Castrillo, and Mario C. Acosta

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Short summary
Earth System Model workflows commonly run on highly congested high-performance computing platforms, meaning that each individual workflow task potentially faces lengthy waiting times in the queues of the schedulers. In this work, we evaluate the task aggregation approach in EC-Earth3 workflows to reduce the queue times and, consequently, the total execution time. The results show up to 23% more simulated years over the same time span, with queuing times reduced by up to a factor of 12.33.
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