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P: Plasmaphysik

P 10: Poster II

P 10.43: Poster

Dienstag, 18. März 2003, 17:30–19:15, Foyer

Introducing PEPC—a Parallel Electrostatic Plasma Coulomb-solver — •Paul Gibbon — John-von-Neumann Institute of Computing, Forschungszentrum

A powerful new computational tool for three-dimensional kinetic plasma simulation is presented. The model is a hybrid of the parallel ‘hashed oct-tree’ (HOT) algorithm of Warren & Salmon [1], and the list-based plasma tree-code developed by Pfalzner & Gibbon [2], resulting in a highly efficient parallel-vector algorithm ideally suited to advanced architectures such as the Earth Simulator [3]. Initial benchmarking shows that even for modest particle numbers, N<105, near-linear speed-ups are possible on the T3E with up to 256 processors. An important feature of PEPC for plasma physics applications is the incorporation of an interactive visualisation and steering capability (VISIT—[4]), allowing parallel simulations to be monitored and adjusted on the fly [5].

[1] M. S. Warren, J. K. Salmon, Comp. Phys. Commun. 87, 266 (1995).

[2] S. Pfalzner, P. Gibbon, Comp. Phys. Commun. 79, 24 (1994).

[3] http://www.es.jamstec.go.jp/

[4] Th. Eickermann, W. Frings, VISIT - a Visualization Interface Toolkit - Version 1.0, ZAM Technical Report IB-2000-16 (2000)

[5] Technical circumstances permitting, a live demo will be attempted at the poster!