Volume 53, March 2016CEMRACS 2014 – Numerical Modeling of Plasmas
|Page(s)||177 - 190|
|Published online||01 April 2016|
Optimization of particle-in-cell simulations for Vlasov-Poisson system with strong magnetic field
1 Institute of Physics of the ASCR,
2 Inria Nancy-Grand Est, TONUS Project & IRMA (UMR CNRS 7501), Université de Strasbourg, France
3 IRMA (UMR CNRS 7501), Université de Strasbourg, France & Institut de Mathématiques de Toulouse (UMR CNRS 5219), Université de Toulouse, France
We study the dynamics of charged particles under the influence of a strong magnetic field by numerically solving the Vlasov-Poisson and guiding center models. By using appropriate data structures, we implement an efficient (from the memory access point of view) particle-in-cell method which enables simulations with a large number of particles. We present numerical results for classical one-dimensional Landau damping and two-dimensional Kelvin-Helmholtz test cases. The implementation also relies on a standard hybrid MPI/OpenMP parallelization. Code performance is assessed by the observed speedup and attained memory bandwidth.
© EDP Sciences, SMAI 2016
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