Particle-In-Cell Simulation Using Asynchronous Tasking

Guidotti, Nicolas; Ceyrat, Pedro; Barreto, João; Monteiro, José; Rodrigues, Rodrigo; Fonseca, Ricardo; Martorell, Xavier; Peña, Antonio J.

doi:10.1007/978-3-030-85665-6_30

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Parallelization With Openmp Task1

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2022

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“…The implementation of Smilei with task programming presented in this section, referred to as version Tasks ON, is not the only possible one in an electromagnetic PIC code (see e.g. [23][24][25]). One of the advantages of this formulation is its compatibility with the patchbased domain decomposition and load balancing strategies at MPI level described in the previous section.…”

Section: Parallelization With Openmp Taskmentioning

confidence: 99%

A Task Programming Implementation for the Particle in Cell Code Smilei

Massimo,

Lobet,

Derouillat

et al. 2022

Preprint

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An implementation of the electromagnetic Particle in Cell loop in the code Smilei using task programming is presented. Through OpenMP, the macro-particles operations are formulated in terms of tasks. This formulation allows asynchronous execution respecting the data dependencies of the macro-particle operations, the most time-consuming part of the code in simulations of interest for plasma physics. Through some benchmarks it is shown that this formulation can help mitigating the load imbalance of these operations at the OpenMP thread level. The improvements in strong scaling for load-imbalanced physical cases are discussed.

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Section: Parallelization With Openmp Taskmentioning

confidence: 99%