Hélène Coullon

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In this paper, we perform a comparison of two approaches for the parallelization of an existing, free software, FullSWOF 2D (http://www. univ-orleans.fr/mapmo/soft/FullSWOF/ that solves shallow water equations for applications in hydrology) based on a domain decomposition strategy. The first approach is based on the classical MPI library while the second(More)
This paper studies the feasibility of efficiently combining both a software component model and a task-based model. Task based models are known to enable efficient executions on recent HPC computing nodes while component models ease the separation of concerns of application and thus improve their modularity and adaptability. This paper describes a prototype(More)
A scientific simulation program is an imitation of a process over time on a computer. Most of the time, the real phenomena is modeled by a system of partial differential equations which are timeand space-dependent (PDEs). In almost all cases it is not possible to directly solve analytically these equations. Hence, approximated solutions of the system are(More)
High performance architectures evolve continuously to be more powerful. Such architectures also usually become more difficult to use efficiently. As a scientist is not a low level and high performance programming expert, Domain Specific Languages (DSLs) are a promising solution to automatically and efficiently write high performance codes. However, if DSLs(More)
GIS processing of large sets of geo-referenced tiles is usually very time-consuming for users. These computations rarely take benefits of PC clusters or Grid computing and are too often run onto simple desktop PC. This is mainly due to the difficulty of parallel programming. In this paper we propose an easy way to greatly accelerate this process for the(More)