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Gyrokinetic Semi-Lagrangian Parallel Simulation using a Hybrid OpenMP/MPI programming

Guillaume Latu 1, 2 Nicolas Crouseilles 1, 3 Virginie Grandgirard 4 Eric Sonnendrücker 1, 3
1 CALVI - Scientific computation and visualization
IRMA - Institut de Recherche Mathématique Avancée, LSIIT - Laboratoire des Sciences de l'Image, de l'Informatique et de la Télédétection, Inria Nancy - Grand Est, IECL - Institut Élie Cartan de Lorraine
Abstract : This paper describes a parallel implementation of a numerical solver for the Vlasov equation. The solver is based on a kinetic model describing the motion of charged particles in a plasma. The evolution of the distribution of particles in phase space is computed with an explicit method, and we take into account the self-consistent electric field through the coupling with a Poisson type equation. In this paper, we focus on a recently developed 5D parallel numerical application dedicated to gyrokinetic simulation of tokamak systems and ITG turbulence simulation. A semi-Lagrangian Vlasov solver is used. A specific cubic spline interpolation allows us to formulate a domain decomposition method. A hybrid MPI/OpenMP paradigm was used to benefit from a large number of processors while reducing communication costs.
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Submitted on : Monday, July 4, 2011 - 11:32:13 AM
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Guillaume Latu, Nicolas Crouseilles, Virginie Grandgirard, Eric Sonnendrücker. Gyrokinetic Semi-Lagrangian Parallel Simulation using a Hybrid OpenMP/MPI programming. 14th European PVM/MPI User's Group Meeting, Sep 2007, Paris, France. pp.356-364, ⟨10.1007/978-3-540-75416-9⟩. ⟨hal-00605748⟩



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