Load-Balanced Multi-GPU Ambient Occlusion for Direct Volume Rendering

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dc.contributor.authorAncel, Alexandreen_US
dc.contributor.authorDischler, Jean-Michelen_US
dc.contributor.authorMongenet, Catherineen_US
dc.contributor.editorHank Childs and Torsten Kuhlen and Fabio Martonen_US
dc.date.accessioned2013-11-08T10:25:58Z
dc.date.available2013-11-08T10:25:58Z
dc.date.issued2012en_US
dc.description.abstractAmbient occlusion techniques were introduced to improve data comprehension by bringing soft fading shadows to the visualization of 3D datasets. They consist in attenuating light by considering the occlusion resulting from the presence of neighboring structures. Nevertheless they often come with an important precomputation cost, which prevents their use in interactive applications based on transfer function editing. This paper explores parallel solutions to reach interactive framerates with the use of a multi-GPU setup. Our method distributes the data to the different devices for computation. We use bricking and load balancing to optimize computation time. We also introduce two repartition schemes: a static one, which divides the dataset into as many blocks as there are GPUs and a dynamic one, which divides the dataset into smaller blocks and distributes them using a producerconsumer way. Results, using an 8-GPU architecture, show that we manage to get important speedups compared to a mono-GPU setup.en_US
dc.description.seriesinformationEurographics Symposium on Parallel Graphics and Visualizationen_US
dc.identifier.isbn978-3-905674-35-4en_US
dc.identifier.issn1727-348Xen_US
dc.identifier.urihttps://doi.org/10.2312/EGPGV/EGPGV12/099-108en_US
dc.publisherThe Eurographics Associationen_US
dc.subjectCategories and Subject Descriptors (according to ACM CCS): I.3.1 [Computer Graphics]: Graphics processors- I.3.1 [Computer Graphics]: Parallel processing-I.3.3 [Computer Graphics]: Display algorithmsen_US
dc.titleLoad-Balanced Multi-GPU Ambient Occlusion for Direct Volume Renderingen_US
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EGPGV12: Eurographics Symposium on Parallel Graphics and Visualization