Kiel 2011 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 15: Theorie/Modellierung I

P 15.6: Vortrag

Mittwoch, 30. März 2011, 15:40–15:55, HS C

PIConGPU - A scalable GPGPU implementation of the particle-in-cell algorithm — •Heiko Burau1, Florian Berninger1, Alexander Debus1, Thomas Kluge1, Axel Jochmann1, Arie Irman1, Ulrich Schramm1, Thomas E. Cowan1, René Widera2, Felix Schmitt2, Wolfgang Hönig2, Guido Juckeland2, Wolfgang Nagel2, Patrick Kilian3, Urs Ganse3, Stefan Siegel3, Felix Spanier3, Benjamin Ragan-Kelley4, John Verboncoeur4, and Michael Bussmann11HZDR, Dresden, Germany — 2ZIH, Dresden, Germany — 3University of Würzburg, Germany — 4UC Berkeley, CA, USA

We present PIConGPU, an efficient and scalable implementation of the particle-in-cell algorithm for GPGPUs. We discuss the main building blocks of PIConGPU, the data access patterns used for both particle and field data and the communication model that allows to hide the large latency of network communication between GPGPU nodes on a cluster. PIConGPU provides a general framework which can be used to study both relativistic and nonrelativistic plasmas. We show first results on relativistic laser wakefield acceleration of electrons in underdense plasmas and on the progress of integrating new physics models. The fast response time of the code makes it possible to receive results in hours compared to weeks with particle-in-cell codes running on mid-size commodity clusters. With this increase in computational speed extensive parameter scans become possible even for large physical systems.

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