Articles | Volume 12, issue 9
Geosci. Model Dev., 12, 3991–4012, 2019
https://doi.org/10.5194/gmd-12-3991-2019
Geosci. Model Dev., 12, 3991–4012, 2019
https://doi.org/10.5194/gmd-12-3991-2019

Development and technical paper 10 Sep 2019

Development and technical paper | 10 Sep 2019

Scalability and some optimization of the Finite-volumE Sea ice–Ocean Model, Version 2.0 (FESOM2)

Nikolay V. Koldunov et al.

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Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Nikolay V. Koldunov on behalf of the Authors (19 Jul 2019)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (22 Jul 2019) by David Ham
RR by Leonidas Linardakis (28 Jul 2019)
ED: Publish as is (12 Aug 2019) by David Ham
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Short summary
We measure how computational performance of the global FESOM2 ocean model (formulated on an unstructured mesh) changes with the increase in the number of computational cores. We find that for many components of the model the performance increases linearly but we also identify two bottlenecks: sea ice and ssh submodules. We show that FESOM2 is on par with the state-of-the-art ocean models in terms of throughput that reach 16 simulated years per day for eddy resolving configuration (1/10°).