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

Data sets

West Atlantic simulation input files and run Gaston Irrmann and Julien Jouanno

Model code and software

NEMO release-4.0 (release 4.0) NEMO system team

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.