Preprints
https://doi.org/10.5194/gmd-2021-319
https://doi.org/10.5194/gmd-2021-319

Submitted as: development and technical paper 02 Nov 2021

Submitted as: development and technical paper | 02 Nov 2021

Review status: this preprint is currently under review for the journal GMD.

Parallel Implementation of the SHYFEM Model

Giorgio Micaletto1, Ivano Barletta1,3, Silvia Mocavero1, Ivan Federico1, Italo Epicoco1,2, Giorgia Verri1, Giovanni Coppini1, Pasquale Schiano1, Giovanni Aloisio1,2, and Nadia Pinardi3 Giorgio Micaletto et al.
  • 1Euro-Mediterranean Centre on Climate Change Foundation, via Augusto Imperatore 16, 73100 Lecce, Italy
  • 2Department of Engineering for Innovation, University of Salento, via per Monteroni, 73100 Lecce, Italy
  • 3Department of Physics and Astronomy, University of Bologna, Italy

Abstract. This paper presents the MPI-based parallelization of the three-dimensional hydrodynamic model SHYFEM (System of HydrodYnamic Finite Element Modules). The original sequential version of the code was parallelized in order to reduce the execution time of high-resolution configurations using state-of-the-art HPC systems. A distributed memory approach was used, based on the message passing interface (MPI). Optimized numerical libraries were used to partition the unstructured grid (with a focus on load balancing) and to solve the sparse linear system of equations in parallel in the case of semi-to-fully implicit time stepping. The parallel implementation of the model was validated by comparing the outputs with those obtained from the sequential version. The performance assessment demonstrates a good level of scalability with a realistic configuration used as benchmark.

Giorgio Micaletto et al.

Status: open (until 28 Dec 2021)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on gmd-2021-319', Anonymous Referee #1, 13 Nov 2021 reply

Giorgio Micaletto et al.

Giorgio Micaletto et al.

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Short summary
The full exploitation of supercomputing architectures requires a deep revision of the current climate models. This paper presents the parallelization of the 3-dimensional hydrodynamic model SHYFEM (System of HydrodYnamic Finite Element Modules). Optimized numerical libraries were used to partition the model domain and to solve the sparse linear system of equations in parallel. The performance assessment demonstrates a good level of scalability with a realistic configuration used as benchmark.