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Featured Article: Benefits and requirements of grid computing for climate applications. An example with the community atmospheric model

Benefits and requirements of grid computing for climate applications. An example with the community atmospheric model

V. Fernández-Quiruelasa, , J. Fernándeza, A.S. Cofiñoa, L. Fitaa, J.M. Gutiérrezb

DOI: 10.1016/j.envsoft.2011.03.006

Abstract

Grid computing is nowadays an established technology in fields such as High Energy Physics and Biomedicine, offering an alternative to traditional HPC for several problems; however, it is still an emerging discipline for the climate community and only a few climate applications have been adapted to the Grid to solve particular problems. In this paper we present an up-to-date description of the advantages and limitations of the Grid for climate applications (in particular global circulation models), analyzing the requirements and the new challenges posed to the Grid. In particular, we focus on production-like problems such as sensitivity analysis or ensemble prediction, where a single model is run several times with different parameters, forcing and/or initial conditions. As an illustrative example, we consider the Community Atmospheric Model (CAM) and analyze the advantages and shortcomings of the Grid to perform a sensitivity study of precipitation with SST perturbations in El Niño area, reporting the results obtained with traditional (local cluster) and Grid infrastructures. We conclude that new specific middleware (execution workflow managers) is needed to meet the particular requirements of climate applications (long simulations, checkpointing, etc.). This requires the side-by-side collaboration of IT and climate groups to deploy fully ported applications, such as the CAM for Grid (CAM4G) introduced in this paper.

http://www.sciencedirect.com/science/article/pii/S1364815211000818

Featured Article on EMS: The Netherlands Hydrological Instrument

A new Featured Article has been published on Environmental Modelling & Software. The full title is:

An operational, multi-scale, multi-model system for consensus-based, integrated water management and policy analysis: The Netherlands Hydrological Instrument

and it is authored by Willem De Lange et al.

The paper is available at: http://www.sciencedirect.com/science/article/pii/S1364815214001406

All featured articles are available here: http://www.iemss.org/society/index.php/featured-articles