Dynamic Grid Refinement for Fluid Simulations on Parallel Graphics Architectures
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Date
2009
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
The Eurographics Association
Abstract
We present a physically-based fluid simulation with dynamic grid refinement on parallel SIMD graphics hardware. The irregular and dynamic structure of an adaptive grid requires sophisticated memory access patterns as well as a decomposition of the problem for parallel processing and the distribution of tasks to multiple threads. In this paper, we focus on the representation and management of the dynamic grid on the graphics device for an efficient parallelization of the advection step and the iterative solving of the Poisson equation. In order to achieve high performance, we utilize the hardware's capabilities like fast cache access and trilinear filtering. Furthermore, expensive data transfer between host and device is minimized to avoid a major bottleneck. We report results on the inherent overhead of the dynamic grid compared to an equivalent Cartesian grid. In addition, a visual simulation of smoke is presented with radiosity-based illumination and volume ray casting at interactive frame rates.
Description
@inproceedings{:10.2312/EGPGV/EGPGV09/009-015,
booktitle = {Eurographics Symposium on Parallel Graphics and Visualization},
editor = {Kurt Debattista and Daniel Weiskopf and Joao Comba},
title = {{Dynamic Grid Refinement for Fluid Simulations on Parallel Graphics Architectures}},
author = {Ament, Marco and Straßer, Wolfgang},
year = {2009},
publisher = {The Eurographics Association},
ISSN = {1727-348X},
ISBN = {978-3-905674-15-6},
DOI = {/10.2312/EGPGV/EGPGV09/009-015}
}