Rachid Habel

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This paper describes the deployment on GPUs of PROP, a program of the 2DRMP suite which models electron collisions with H-like atoms and ions. Because performance on GPUs is better in single precision than in double precision, the numerical stability of the PROP program in single precision has been studied. The numerical quality of PROP results computed in(More)
This paper summarizes the results of availability analysis completed for optical shared protection rings (OSPRs) applied to long-haul networks. Fault scenarios are described for the case of clients with automatic protection switching (APS) although results of the analysis are given for both clients with and without APS. It is shown that for clients with(More)
This paper describes dSTEP, a directive-based programming model for hybrid shared and distributed memory machines. The originality of our work is the definition and an implementation of a unified high-level programming model addressing both data and computation distributions, providing a particularly fine control of the computation. The goal is to improve(More)
—Leveraging the performance of distributed and shared memory clusters in scientific computing is challenging in terms of programmability and efficiency. The dimensions of the problem are data distribution, computation distribution, efficient communications and the ease of programming. To address those dimensions in a balanced manner, we present a(More)
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