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Geoscientific Model Development An interactive open-access journal of the European Geosciences Union
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Volume 9, issue 6
Geosci. Model Dev., 9, 2115–2128, 2016
https://doi.org/10.5194/gmd-9-2115-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

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

Geosci. Model Dev., 9, 2115–2128, 2016
https://doi.org/10.5194/gmd-9-2115-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Development and technical paper 10 Jun 2016

Development and technical paper | 10 Jun 2016

Performance and results of the high-resolution biogeochemical model PELAGOS025 v1.0 within NEMO v3.4

Italo Epicoco et al.
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Blackford, L. S., Choi, J., Cleary, A., Demmel, J., Dhillon, I., Dongarra, J., Hammarling, S., Henry, G., Petitet, A., Stanley, K., Walker, D., and Whaley, R. C.: ScaLAPACK: a portable linear algebra library for distributed memory computers – design issues and performance, in: Proceedings of the 1996 ACM/IEEE conference on Supercomputing, 17–22 November 1996, Pittsburgh, Pennsylvania, USA, 5 pp., 1996.
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The present work aims at evaluating the scalability performance of a high-resolution global ocean biogeochemistry model (PELAGOS025) on massive parallel architectures and the benefits in terms of the time-to-solution reduction. The outcome of the analysis demonstrated that the lack of scalability is due to several factors such as the I/O operations, the memory contention, and the load unbalancing due to the memory structure of the biogeochemistry model component.
The present work aims at evaluating the scalability performance of a high-resolution global...
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