Articles | Volume 15, issue 4
Geosci. Model Dev., 15, 1567–1582, 2022
https://doi.org/10.5194/gmd-15-1567-2022

Special issue: Nucleus for European Modelling of the Ocean - NEMO

Geosci. Model Dev., 15, 1567–1582, 2022
https://doi.org/10.5194/gmd-15-1567-2022
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 et al.

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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.