Data-Parallel Numerical Weather Forecasting

Issue title: Applications Analysis

Article type: Research Article

Authors: WOLTERS, LEX | CATS, GERARD | GUSTAFSSON, NILS

Affiliations: High Performance Computing Division, Department of Computer Science, Leiden University, P.O. Box 9512, 2300 RA Leiden, The Netherlands; E-mail: [email protected] | Royal Netherlands Meteorological Institute, P.O. Box 201, 3730 AE De Bilt, The Netherlands; E-mail: [email protected] | Swedish Meteorological and Hydrological Institute, S-60176 Norrköping, Sweden; E-mail: [email protected]

Abstract: In this article we describe the implementation of a numerical weather forecast model on a massively parallel computer system. This model is a production code used for routine weather forecasting at the meteorological institutes of several European countries. The modifications needed to achieve a data-parallel version of this model without explicit message passing are outlined. The achieved performance of different numerical solution methods within this model is presented and compared.

Journal: Scientific Programming, vol. 4, no. 3, pp. 141-153, 1995