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Post-Processing Pipeline Optimization for Interactive Exploration of Multi-Block Turbine Propulsion Simulation Datasets

Gerndt, Andreas and Hempel, Rolf and Kügeler, Edmund and Kuhlen, Torsten (2009) Post-Processing Pipeline Optimization for Interactive Exploration of Multi-Block Turbine Propulsion Simulation Datasets. In: Proceedings of the 5th High-End Visualization Workshop, pp. 62-78. Lehmanns Media. 5th High-End Visualization Workshop, 18. - 22. March 2009, Baton Rouge, Louisiana, USA. ISBN 978-3-86541-330-7.

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With the increasing power of current supercomputers, flow field simulations become larger and larger. Those datasets are too large to fit into the main memory of a visualization workstation and too large to be processed in a reasonable time on a stand-alone system. Distributed post-processing can eliminate dominant bottlenecks. With parallel computer systems, the post-processing can show a considerable speed-up. In this paper, we address issues to optimize several phases of the pipeline-based post-processing for interactive exploration of time-dependent, multi-block flow field simulation datasets. Firstly, we present the distributed post-processing framework, its approach to manage multi-block data structures, and how nested parallelization can improve the overall runtime. Scalability, balancing, and efficiency of algorithms optimized for unsteady multi-block datasets are presented. However, complex feature extractions are still time-consuming. For interactive exploration approaches in virtual environments, further strategies like streaming of intermediate data from post-processing backend to visualization frontend are needed. If the extracted visualization objects are too complex to be rendered with interactive frame rates, view-dependent multi-resolution techniques can help to present essential details without losing real-time rendering. To improve the interactivity, several integrated strategies are evaluated. Run-time measurements prove the efficiency of the approaches. An outlook for future steps concludes this paper.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Post-Processing Pipeline Optimization for Interactive Exploration of Multi-Block Turbine Propulsion Simulation Datasets
AuthorsInstitution or Email of Authors
Gerndt, AndreasDLR, Germany
Hempel, RolfDLR, Germany
Kügeler, EdmundDLR, Germany
Kuhlen, TorstenVR-Group, RWTH Aachen, Germany
Journal or Publication Title:Proceedings of the 5th High-End Visualization Workshop
Refereed publication:Yes
In ISI Web of Science:No
Page Range:pp. 62-78
Schoor, WolframUNSPECIFIED
Gerndt, AndreasUNSPECIFIED
Publisher:Lehmanns Media
Keywords:Virtual Reality, Scientific Visualization, Large-scale Datasets, Multi-Block Data Structure, Data Streaming, Multi-Resolution Approaches
Event Title:5th High-End Visualization Workshop
Event Location:Baton Rouge, Louisiana, USA
Event Type:Workshop
Event Dates:18. - 22. March 2009
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:other
DLR - Research area:Transport
DLR - Program:V - no assignement
DLR - Research theme (Project):V -- no assignement
Location: Köln-Porz , Braunschweig
Institutes and Institutions:Institut of Simulation and Software Technology
Institut of Simulation and Software Technology > Software für Raumfahrtsysteme und interaktive Visualisierung
Deposited By: Dr.rer.nat. Andreas Gerndt
Deposited On:10 Dec 2009 09:47
Last Modified:18 Mar 2013 16:55

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