Single Domain Multiple Decompositions for Particle-in-Cell simulations

Autor:	Derouillat, Julien, Beck, Arnaud
Rok vydání:	2019
Předmět:	Physics - Computational Physics
Druh dokumentu:	Working Paper
DOI:	10.1088/1742-6596/1596/1/012052
Popis:	As a multi-purpose Particle-In-Cell (PIC) code, Smilei gathers many different features in a single software. Combining some of them is challenging. In particular, spectral solvers and patch based load balancing have a priori non compatible requirements. This paper introduces the Single Domain Multiple Decompositions (SDMD) method in order to address this issue. To do so, different domain decompositions are used for fields and particles operations. This approach allows to keep small domains for particles, necessary for a good load balancing, while having large domains for the fields. It proves beneficial in mitigating synchronization costs and gives the opportunity to introduce more paralellism in the PIC algorithm on top of providing structures compatible with spectral solvers. Comment: Submitted as a proceeding to EAAC 2019 (European Advanced Accelerator Concepts)
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1912.04064 Zobrazit plný text záznamu View this record from Arxiv