Software

FZJ-2024-06842

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png The Pretty Efficient Parallel Coulomb Solver (PEPC) (v2.1.0-DVH)

Durante, D. ; Marrone, S. ; Brömmel, D.FZJ* ; Colagrossi, A. ; Speck, R.FZJ* ; Gibbon, P.FZJ*

2024

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Please use a persistent id in citations: doi:10.5281/ZENODO.10640946

Abstract: The PEPC project (Pretty Efficient Parallel Coulomb Solver) is a public tree code that has been developed at Jülich Supercomputing Centre since the early 2000s. Our tree code is a non-recursive version of the Barnes-Hut algorithm, using a level-by-level approach to both tree construction and traversals. The parallel version is a hybrid MPI/PThreads implementation of the Warren-Salmon 'Hashed Oct-Tree' scheme, including several variations of the tree traversal routine - the most challenging component in terms of scalability. The code is structurally divided into three parts: kernel routines that handle all tree code specific data structures and communication as well as the actual tree traversal. interaction-specific modules, i.e. routines that apply to specific interaction kernels and multipole expansions. Currently, the following interaction kernels are available: Coulomb-interaction/gravitation, algebraic kernels for vortex methods, Darwin for magnetoinductive plasmas (no EM wave propagation), nearest-neighbour interactions for smooth particle hydrodynamics (SPH). 'front-end' applications. For example PEPC-essential, a skeleton molecular dynamics program simulating a coulomb explosion, PEPC-b, a code for laser- or particle beam-plasma interactions as well as plasma-wall interactions, PEPC-v, an application for simulating vortex dynamics using the vortex particle method, PEPC-dvh, vortex dynamics using the diffused vortex hydrodynamics method several internal experimental frontends.

Keyword(s): Barnes-Hut ; tree code ; High Performance Computing ; HPC ; DVH ; Vortex

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Contributing Institute(s):

1. Jülich Supercomputing Center (JSC)

Research Program(s):

1. 5112 - Cross-Domain Algorithms, Tools, Methods Labs (ATMLs) and Research Groups (POF4-511) (POF4-511)
2. 5111 - Domain-Specific Simulation & Data Life Cycle Labs (SDLs) and Research Groups (POF4-511) (POF4-511)
3. RGRSE - RG Research Software Engineering for HPC (RG RSE) (RG-RSE) (RG-RSE)

Appears in the scientific report 2024

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