The IPSL Climate Modeling Centre (ICMC) was created to develop a coupled climate model for climate and climate change analysis. ICMC (80 researchers and engineers) is now maintaining one of the very few comprehensive Earth System models worldwide, which includes representations of the atmosphere, the oceans, the continental and iced surfaces, and their physical, chemical or biochemical interactions. IPSL was among the two first institutes to develop coupled approaches of the climate and carbon-cycle evolution, and it has been playing a prominent role in the French participation to the various IPCC exercises. IPSL coordinates the FP7 European infrastructure project IS-ENES 1 and 2 (coordinator S. Joussaume), which aims to strengthen the modelling community organisation on a European scale.

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CNRS-GAME (Centre National de la Recherche Scientifique / Groupe d'étude de l'Atmosphère Météorologique) is a research centre affiliated to CNRS (UMR 3589) and Météo-France (the French national weather service). CNRS-GAME will be represented by CNRS within the CONVERGENCE project. Météo-France and CNRS provide CNRS-GAME most of its support, especially through permanent staff wages and super-computing.

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Centre Européen de Recherche et de Formation Avancée en Calcul Scientifique (CERFACS), established in 1987 in Toulouse (France), is currently one of the world's leading research institutes working on efficient algorithms for solving large-scale scientific problems. The CERFACS Climate Modelling and Global Change team conducts basic scientific research and high-level technical developments in the field of climate studies. In particular, the team develops the OASIS coupler currently used by more than 35 climate-modelling groups in Europe and around the world.

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MDLS (Maison de la Simulation) is a joint laboratory between 5 partners (CEA, CNRS, INRIA, Université d'Orsay and Université de Versailles - St Quentin) created in 2011 in order to promote the effective use by scientific community of the major computing facilities (e.g. the European PRACE/GENCI CURIE supercomputer) and research in HPC. MDLS seeks to accompany, support and stimulate scientific communities to make the best use of supercomputers, especially deployed as part of the European project PRACE and the French national centres under GENCI. It particularly promotes the emergence in France of a community around high end computing and develops strong collaboration between researchers and engineers from the various disciplines needed to achieve the important scientific breakthroughs expected of high performance computing.

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The Institute for Development and Resources in Intensive Scientific Computing (IDRIS), founded in 1993, is a centre of excellence in intensive numerical calculations which serves the research branches of extreme computing, as much on the application aspects (large-scale simulations) as on those linked to research inherent to high performance calculations (calculation infrastructures, resolution methods and associated algorithms, processing of large data volumes, etc.).

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