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  1. No Access

    Chapter and Conference Paper

    Pre-exascale Architectures: OpenPOWER Performance and Usability Assessment for French Scientific Community

    Exascale implies a major pre-requisite in terms of energy efficiency, as an improvement of an order of magnitude must be reached in order to stay within an acceptable envelope of 20 MW. To address this objecti...

    Gabriel Hautreux, Alfredo Buttari, Arnaud Beck, Victor Cameo in High Performance Computing (2017)

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    Article

    Automated Detection of Coronal Loops Using a Wavelet Transform Modulus Maxima Method

    We propose and test a wavelet transform modulus maxima method for the automated detection and extraction of coronal loops in extreme ultraviolet images of the solar corona. This method decomposes an image into...

    R. T. James McAteer, Pierre Kestener, Alain Arneodo, Andre Khalil in Solar Physics (2010)

  3. No Access

    Chapter and Conference Paper

    Accelerating Euler Equations Numerical Solver on Graphics Processing Units

    Finite volume numerical methods have been widely studied, implemented and parallelized on multiprocessor systems or on clusters. Modern graphics processing units (GPU) provide architectures and new programing ...

    Pierre Kestener, Frédéric Château in Algorithms and Architectures for Parallel … (2010)

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    Article

    A multifractal formalism for vector-valued random fields based on wavelet analysis: application to turbulent velocity and vorticity 3D numerical data

    Extreme atmospheric events are intimately related to the statistics of atmospheric turbulent velocities. These, in turn, exhibit multifractal scaling, which is determining the nature of the asymptotic behavior...

    Pierre Kestener, Alain Arneodo in Stochastic Environmental Research and Risk Assessment (2008)