Performance analysis and implementation details of the Energy Conserving Semi-Implicit Method code (ECsim)

Gonzalez-Herrero, Diego and Boella, Elisabetta and Lapenta, Giovanni (2018) Performance analysis and implementation details of the Energy Conserving Semi-Implicit Method code (ECsim). Computer Physics Communicationios, 229. pp. 162-169.

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Abstract

We present in this work the implementation of the Energy Conserving Semi-Implicit Method in a parallel code called ECsim. This new code is a three-dimensional, fully electromagnetic particle in cell (PIC) code. It is written in C/C++ and uses MPI to allow massive parallelization. ECsim is unconditionally stable in time, eliminates the finite grid instability, and has the same cycle scheme as the explicit code with a computational cost comparable to other semi-implicit PIC codes. All these features make it a very valuable tool to address situations which have not been possible to analyze until now with other PIC codes. In this work, we show the details of the algorithm implementation and we study its performance in different systems. ECsim is compared with another semi-implicit PIC code with different time and spectral resolution, showing its ability to address situations where other codes fail.

Item Type: Journal Article
Journal or Publication Title: Computer Physics Communicationios
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 132499
Deposited By: ep_importer_pure
Deposited On: 11 Apr 2019 13:25
Refereed?: Yes
Published?: Published
Last Modified: 19 Feb 2020 05:19
URI: https://eprints.lancs.ac.uk/id/eprint/132499

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