Geoscientific Model Development
Geoscientific Model Development
GMD
Articles | Volume 15, issue 4
Articles | Volume 15, issue 4
https://doi.org/10.5194/gmd-15-1567-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/gmd-15-1567-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 15, issue 4
Development and technical paper
 | 
22 Feb 2022
Development and technical paper |  | 22 Feb 2022

Improving ocean modeling software NEMO 4.0 benchmarking and communication efficiency

Gaston Irrmann, Sébastien Masson, Éric Maisonnave, David Guibert, and Erwan Raffin

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Latest update: 02 Nov 2025
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Short summary
To be efficient on supercomputers, software must be high-performance at computing many concurrent tasks. Communications between tasks is often necessary but time consuming, and ocean modelling software NEMO 4.0 is no exception. In this work we describe approaches enabling fewer communications, an optimization to share the workload more equally between tasks and a new flexible configuration to assess NEMO's performance easily.
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Special issue
Nucleus for European Modelling of the Ocean - NEMO