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Enabling In-situ Pre- and Post-Processing for Exascale Hemodynamic Simulations − A Co-Design Study with the Sparse Geometry Lattice Boltzmann Code HemeLB

Chen, Fang and Flatken, Markus and Basermann, Achim and Gerndt, Andreas and Hetherington, James and Krüger, Timm and Matura, Gregor and Nash, Rupert (2012) Enabling In-situ Pre- and Post-Processing for Exascale Hemodynamic Simulations − A Co-Design Study with the Sparse Geometry Lattice Boltzmann Code HemeLB. In: IEEE Xplore, ACM Digital Library (Online-Proceedings). SC 2012, 10.-16. Nov. 2012, Salt Lake City, USA.

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Official URL: http://conferences.computer.org/sc/2012/ , http://dl.acm.org/citation.cfm?id=2388996

Abstract

Today’s fluid simulations deal with complex geometries and numerical data on an extreme scale. As computation approaches the exascale, it will no longer be possible to write and store the full-sized data set. In situ data analysis and scientific visualisation provide feasible solutions to the analysis of complex large scaled CFD simulations. To bring pre- and postprocessing to the exascale we must consider modifications to data structure and memory layout, and address latency and error resiliency. In this respect, a particular challenge is the exascale data processing for the sparse geometry lattice-Boltzmann code HemeLB, intended for hemodynamic simulations. In this paper, we assess the needs and challenges of HemeLB users and sketch a co-design infrastructure and system architecture for pre- and post-processing the simulation data. To enable in situ data visualisation and analysis during a running simulation, post-processing needs to work on a reduced subset of the original data. Particular choices of data structure and visualisation techniques need to be co-designed with the application scientists in order to achieve efficient and interactive data processing and analysis. In this work, we focus on the hierarchical data structure and suitable visualisation techniques which provide possible solutions to interactive in situ data processing at exascale. Architectural challenges and road-maps will be presented as the major focus of this paper. We sketch a software architecture which integrates pre- and post-processing techniques that can provide in situ analysis and ultimately computational steering to HemeLB.

Item URL in elib:https://elib.dlr.de/79331/
Document Type:Conference or Workshop Item (Speech)
Title:Enabling In-situ Pre- and Post-Processing for Exascale Hemodynamic Simulations − A Co-Design Study with the Sparse Geometry Lattice Boltzmann Code HemeLB
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Chen, FangSC-SRVUNSPECIFIED
Flatken, MarkusSC-SRVUNSPECIFIED
Basermann, AchimSC-VSSUNSPECIFIED
Gerndt, AndreasSC-SRVUNSPECIFIED
Hetherington, JamesUCLUNSPECIFIED
Krüger, TimmUCLUNSPECIFIED
Matura, GregorSC-VSSUNSPECIFIED
Nash, RupertUCLUNSPECIFIED
Date:December 2012
Journal or Publication Title:IEEE Xplore, ACM Digital Library (Online-Proceedings)
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:Yes
Status:Published
Keywords:Pre-processing; post-processing; exascale computer systems; partitioning; computational steering; interactive visualisation; hemodynamic simulation
Event Title:SC 2012
Event Location:Salt Lake City, USA
Event Type:international Conference
Event Dates:10.-16. Nov. 2012
Organizer:IEEE COMPUTER SOCIETY, ACM
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Technik für Raumfahrtsysteme
DLR - Research theme (Project):R - Vorhaben SISTEC
Location: Braunschweig , Köln-Porz
Institutes and Institutions:Institut of Simulation and Software Technology > Software for Space Systems and Interactive Visualisation
Institut of Simulation and Software Technology > Distributed Systems and Component Software
Institut of Simulation and Software Technology
Deposited By: Basermann, Dr.-Ing. Achim
Deposited On:13 Dec 2012 16:01
Last Modified:31 Jul 2019 19:38

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