Regensburg 2013 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 12: Computational Materials Modelling - Mechanical Properties

MM 12.9: Vortrag

Montag, 11. März 2013, 17:45–18:00, H24

Massively parallel detection of contacts for packing problems using NVIDIA CUDA — •Jakob Nixdorf and Eckard Specht — Otto-von-Guericke-University Magdeburg, Department of Experimental Physics/Material Physics

High density packings of particles are often used as models of the structure of liquid, glassy and crystalline states of matter, granular media, heterogeneous materials and even biological systems.

In this work the packing of millions of unequal spheres is studied. The crucial and by far most time-consuming part of such computer simulations is the detection of contacts and overlaps between the spheres and the container. A massively parallel approach has been implemented using the CUDA toolkit for programming NVIDIA Tesla graphics cards. Problems and results of this implementation are discussed and compared with a serial implementation as well as the efforts of other groups.