Abstract
The increase in capability of Earth System Models (ESMs) is strongly linked to the amount of computing power, given that the spatial resolution used for global climate experimentation is a limiting factor to correctly reproduce climate mean state and variability. However, higher spatial resolutions require new and High Performance Computing (HPC) platforms, where the improvement of the computational efficiency of the ESMs will be mandatory. In this context, porting a new ultra-high resolution configuration into a new and more powerful HPC cluster is a challenging task, involving a technical expertise to deploy and improve the computational performance of such a novel configuration. In this paper, we focus on the work done in the context of a PRACE Preparatory Access Project, aiming to optimize the T1279-ORCA12 configuration of the EC-Earth 3.2 coupled climate model. In this case, all runs have been performed in the MareNostrum IV supercomputer of the Barcelona Supercomputing Center.
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