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Leong, Siew Hoon
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Leong, Siew Hoon
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- PublicationRestrictedTowards Addressing CPU-Intensive Seismological Applications in Europe(Springer Berlin Heidelberg, 2013)
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;Carpené, M.; CINECA, Bologna, Italy ;Klampanos, I. A.; University of Edinburgh, School of Informatics, UK ;Leong, S. H.; Leibniz Supercomputing Centre (LRZ), Garching, Germany ;Casarotti, E.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia ;Danecek, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italia ;Ferini, G.; CINECA, Bologna, Italy ;Gemünd, A.; Fraunhofer Institute for Algorithms and Scientific Computing SCAI, Germany ;Krause, A.; University of Edinburgh, Edinburgh Parallel Computing Centre (EPCC), UK ;Krischer, L.; Ludwig-Maximilianis-University, Department of Earth and Environmental Sciences, Germany ;Magnoni, F.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italia ;Simon, M.; Ludwig-Maximilianis-University, Department of Earth and Environmental Sciences, Germany ;Spinuso, A.; The Royal Netherlands Meteorological Institute (KNMI), Netherlands ;Trani, L.; The Royal Netherlands Meteorological Institute (KNMI), Netherlands ;Atkinson, M.; University of Edinburgh, School of Informatics, UK ;Erbacci, G.; CINECA, Bologna, Italy ;Frank, A.; Leibniz Supercomputing Centre (LRZ), Garching, Germany ;Igel, H.; Ludwig-Maximilianis-University, Department of Earth and Environmental Sciences, Germany ;Rietbrock, H.; University of Liverpool, Department of Earth, Ocean and Ecological Sciences, UK ;Schwichtenberg, H.; Fraunhofer Institute for Algorithms and Scientific Computing SCAI, Germany ;Vilotte, J.; Institut de Physique du Globe de Paris (IPGP), France; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; Advanced application environments for seismic analysis help geosci- entists to execute complex simulations to predict the behaviour of a geophysical system and potential surface observations. At the same time data collected from seismic stations must be processed comparing recorded signals with predictions. The EU-funded project VERCE (http://verce.eu/) aims to enable specific seismological use-cases and, on the basis of requirements elicited from the seis- mology community, provide a service-oriented infrastructure to deal with such challenges. In this paper we present VERCE’s architecture, in particular relating to forward and inverse modelling of Earth models and how the, largely file-based, HPC model can be combined with data streaming operations to enhance the scala- bility of experiments. We posit that the integration of services and HPC resources in an open, collaborative environment is an essential medium for the advancement of sciences of critical importance, such as seismology.190 24 - PublicationOpen AccessVERCE delivers a productive e-Science environment for seismology research(2015-10-07)
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;; ; ; ; ; ; ; ; ; ; ; ;; ;; ; ; ;The VERCE project has pioneered an e-Infrastructure to support researchers using established simulation codes on high-performance computers in conjunction with multiple sources of observational data. This is accessed and organised via the VERCE science gateway that makes it convenient for seismologists to use these resources from any location via the Internet. Their data handling is made flexible and scalable by two Python libraries, ObsPy and dispel4py and by data services delivered by ORFEUS and EUDAT. Provenance driven tools enable rapid exploration of results and of the relationships between data, which accelerates understanding and method improvement. These powerful facilities are integrated and draw on many other e-Infrastructures. This paper presents the motivation for building such systems, it reviews how solid-Earth scientists can make significant research progress using them and explains the architecture and mechanisms that make their construction and operation achievable. We conclude with a summary of the achievements to date and identify the crucial steps needed to extend the capabilities for seismologists, for solid-Earth scientists and for similar disciplines.100 98 - PublicationRestrictedAdvance Visualisation of Seismic Wave Propagation and Wave Speed Model(2014)
; ; ; ; ; ;Leong, S. H.; Leibniz Supercomputing Centre, Boltzmannstraße 1, Garching near Munich 85748, Germany; Ludwig-Maximilians-Universität München, Oettingenstraße 67, Munich 80538, Germany ;Anthes, C.; Leibniz Supercomputing Centre, Boltzmannstraße 1, Garching near Munich 85748, Germany; Ludwig-Maximilians-Universität München, Oettingenstraße 67, Munich 80538, Germany ;Magnoni, F.; Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione CNT, Roma, Italia ;Spinuso, A.; Royal Netherlands Meteorological Institute, Utrechtseweg 297, 3731 GA De Bilt, Netherlands ;Casarotti, E.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia; ; ; ; With the induction of the Virtual Reality and Visualisation Centre (V2C) at Leibniz Supercomputing Centre (LRZ), many domain specialists have approached LRZ to leverage on the immersive projection technology. Large datasets can now be stereoscopically displayed and specialists can interact with their complex datasets intuitively. Seismologists is one group of domain specialists that have benefited from the use of this virtual reality (VR) technology. To allow a deep insight into the simulated data, the seismologists make use of VR installations like a 5 sided projection installation based on the concepts of a Carolina Cruz-Neira’s CAVE Automated Virtual Environment (CAVE). In this article, the CAVE like installation at LRZ will be referred to as the CAVE for convenience.452 69