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Visualization of big SPH simulations via compressed octree grids

Florian Reichl, Marc Treib, Rudiger Westermann
2013 2013 IEEE International Conference on Big Data  
We resample the particle data to a multiresolution multiblock grid, where the resolution of the blocks is dictated by the particle distribution.  ...  Interactive and high-quality visualization of spatially continuous 3D fields represented by scattered distributions of billions of particles is challenging.  ...  ACKNOWLEDGMENT We would like to thank Volker Springel from the Max Planck Society in Garching for his support with the data set. This publication is based on work supported by Award No.  ... 
doi:10.1109/bigdata.2013.6691717 dblp:conf/bigdataconf/ReichlTW13 fatcat:vum5milb5nfodjhpgk6mbo2rtm

A scalable and tunable adaptive resolution parallel i/o framework

Sidharth Kumar
2018
Adaptive resolution storage and I/O, which allows subsets of a simulation to be accessed at varying spatial resolutions, can yield significant improvements to both the storage performance and I/O time.  ...  This is achieved by developing technology for highly scalable and tunable parallel I/O, applicable to both traditional parallel data formats and multiresolution data formats, which are directly appropriate  ...  This problem is addressed by layout-aware data aggregation, an I/O transformation suited specifically for sparse data dumps.  ... 
doi:10.26053/0h-rvmj-htg0 fatcat:7xzngi7gjzdr7nbrqu4ajtzyom

A divide-and-conquer/cellular-decomposition framework for million-to-billion atom simulations of chemical reactions

Aiichiro Nakano, Rajiv K. Kalia, Ken-ichi Nomura, Ashish Sharma, Priya Vashishta, Fuyuki Shimojo, Adri C.T. van Duin, William A. Goddard, Rupak Biswas, Deepak Srivastava
2007 Computational materials science  
Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to a penalty for failing to comply with a collection of information if it does not display a currently  ...  Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining  ...  An orderof-magnitude improvement in the I/O performance was achieved for MD data with user-controlled error bound [36] .  ... 
doi:10.1016/j.commatsci.2006.04.012 fatcat:muocll6lfvazrj4qmy2geazy6m

Occam's razor and petascale visual data analysis

E W Bethel, C Johnson, S Ahern, J Bell, P-T Bremer, H Childs, E Cormier-Michel, M Day, E Deines, T Fogal, C Garth, C G R Geddes (+20 others)
2009 Journal of Physics, Conference Series  
An effective approach will likely combine application architectures that are capable of running on today's largest platforms to address the challenges posed by large data with visual data analysis techniques  ...  For large to very large data, an approach was presented that evaluates FTLEs adaptively by varying the density of seeded particles in dependence of the spatial variation of the FTLE measure.  ...  VisIt's parallelization approach uses domain decomposition so that each MPI process, which runs data I/O, processing, and rendering, operates only on its data subset.  ... 
doi:10.1088/1742-6596/180/1/012084 fatcat:tctjmafyfbhbfpwifrt3dhblgm

A Survey of GPU-Based Large-Scale Volume Visualization [article]

Johanna Beyer, Markus Hadwiger, Hanspeter Pfister
2014 Eurographics Conference on Visualization  
This leads to recent outputsensitive approaches that are "ray-guided," "visualization-driven," or "display-aware."  ...  In addition to combining the parallel processing power of GPUs with out-of-core methods and data streaming, a major enabler for interactivity is making both the computational and the visualization effort  ...  We would like to thank Fabio Marton, Timo Ropinski, and Daniel Weiskopf for their valuable feedback, and Hendrik Strobelt for his help. This work was partially supported by NSF grant OIA 1125087.  ... 
doi:10.2312/eurovisstar.20141175 dblp:conf/vissym/BeyerHP14 fatcat:7bxd7zifyba37nqkcuht3qtsxy

Visualization for the Physical Sciences

Dan R. Lipşa, Robert S. Laramee, Simon J. Cox, Jonathan C. Roberts, Rick Walker, Michelle A. Borkin, Hanspeter Pfister
2012 Computer graphics forum (Print)  
We introduce novel classifications schemes based on application area, data dimensionality and challenges addressed, and apply this classification scheme to each contribution. 4.  ...  We introduce novel classification schemes based on application area, data dimensionality and main challenge addressed, and apply these classifications to each contribution from the literature.  ...  We thank James Walker for proof-reading our paper and we acknowledge the anonymous reviewers for their thorough and insightful reviews.  ... 
doi:10.1111/j.1467-8659.2012.03184.x fatcat:43gtqxe355cgvjhz5cvyw75vk4

Fusion Simulation Project Workshop Report

Arnold Kritz, David Keyes
2008 Journal of fusion energy  
The Fusion Simulation Project agenda for applied mathematics and computer science lies squarely on top of the ten-year vision statement "Simulation and Modeling at the Exascale for Energy, Ecological Sustainability  ...  going beyond traditional reductionism focused on detailed understanding of components; (2) interdisciplinary simulations incorporating expertise from all relevant quarters and observational data; and  ...  There are also many advantages to adopting a parallel I/O layer that hides the complexity of the I/O logic and enables hiding I/O costs by overlapping I/O with computation.  ... 
doi:10.1007/s10894-008-9151-4 fatcat:mgibgmcdand75ptldzeeekwdwm

State-of-the-Art in GPU-Based Large-Scale Volume Visualization

Johanna Beyer, Markus Hadwiger, Hanspeter Pfister
2015 Computer graphics forum (Print)  
This leads to recent outputsensitive approaches that are "ray-guided," "visualization-driven," or "display-aware."  ...  In addition to combining the parallel processing power of GPUs with out-of-core methods and data streaming, a major enabler for interactivity is making both the computational and the visualization effort  ...  These challenges require research on novel techniques for data visualization, processing, storage, and I/O that scale to extreme-scale data [MWY * 09, AAM * 11, BCH12].  ... 
doi:10.1111/cgf.12605 fatcat:3dlv7zvzm5dx7nxqgfglp5vew4

The Peano software - parallel, automaton-based, dynamically adaptive grid traversals [article]

Tobias Weinzierl
2018 arXiv   pre-print
adaptive mesh refinement software.  ...  We discuss the design decisions, design alternatives and rationale behind the third generation of Peano, a framework for dynamically adaptive Cartesian meshes derived from spacetrees.  ...  Notably, thanks are due to Hans-Joachim Bungartz and his group at Technische Universität München who provided the longest-term environment for the development of this code.  ... 
arXiv:1506.04496v6 fatcat:iwgintogxjgiviybhvymz5xxou

The Peano Software—Parallel, Automaton-based, Dynamically Adaptive Grid Traversals

Tobias Weinzierl
2019 ACM Transactions on Mathematical Software  
Notably, thanks are due to Hans-Joachim Bungartz and his group at Technische Universität München who provided the longest-term environment for the development of this code.  ...  Adaptive Cartesian grids yield hanging nodes such as the vertex adjacent to I,O,Q.  ...  For the grid from Figure B we obtain touchVertexFirstTime(v I,G,F,H ) enterCell(I) enterCell(G) enterCell(O) touchVertexFirstTime(v I,G,F,H ) createHangingVertex(v I,O,F,H ) touchVertexFirstTime(v I,G,  ... 
doi:10.1145/3319797 fatcat:5kohpbz3w5eqhfmjg67qngdsla

VDB

Ken Museth
2013 ACM Transactions on Graphics  
Since the VDB data structure is fundamentally hierarchical, it also facilitates adaptive grid sampling, and the inherent acceleration structure leads to fast algorithms that are well-suited for simulations  ...  Our "VDB", so named because it is a Volumetric, Dynamic grid that shares several characteristics with B+trees, exploits spatial coherency of time-varying data to separately and compactly encode data values  ...  of a data structure and the spatial layout of voxels.  ... 
doi:10.1145/2487228.2487235 fatcat:zkee6xsz5vdfbfzs267ymadq7y

Multi-resolution bitmap indexes for scientific data

Rishi Rakesh Sinha, Marianne Winslett
2007 ACM Transactions on Database Systems  
In particular, previously proposed methods of binning, encoding, and compressing bitmap vectors either were quite slow for processing the large-range query conditions our scientists used, or required excessive  ...  In this article, we describe the difficulties we encountered in deploying bitmap indexes with scientific data and queries from two real-world domains.  ...  of Illinois for help with the rocket science data set, and Vikas Mehra and Pratyush Sinha for their help with the earth science data set.  ... 
doi:10.1145/1272743.1272746 fatcat:umx62g5wxbgbrfe6k4zlfbhage

D8.3: Re-integration into Community Codes

Claudio Gheller
2013 Zenodo  
WP8, together with scientists and community software developers from Astrophysics, Climate, Material Science, Particle Physics and Engineering, re-designed and re-factored eighteen codes.  ...  The main focus of WP8 was the re-design and refactoring of a number of selected codes for scientific numerical applications, in order to effectively run on coming generations of supercomputing architectures  ...  It is presumed that geometry data is placed in the distributed memory in a spatial locality aware way.  ... 
doi:10.5281/zenodo.6572421 fatcat:z6yjehkxrjdvnptuodtehjb6v4

Textures revisited

Hitoshi Yamauchi, Hendrik P.A. Lensch, Jörg Haber, Hans-Peter Seidel
2005 The Visual Computer  
We describe texture generation methods for complex objects.  ...  Our methods are fully automatic, except for the registration process between a 3D model and input photographs. We demonstrate the application of our method to human face models for evaluation.  ...  Acknowledgement This work has been partially funded by the Max Planck Center for Visual Computing and Communication.  ... 
doi:10.1007/s00371-005-0283-5 fatcat:fth3yojcczdrtbjkfwxia7op7a

Computer-Assisted Medical Education [chapter]

Bernhard Preim, Charl Botha
2014 Visual Computing for Medicine  
Visible Human The most widely used data sources for anatomy education are the Visible Human datasets.  ...  Thus, in addition to the above-mentioned general requirements for e-learning systems in medicine, there are some further requirements for systems related to image data, e.g., in radiology and surgery.These  ...  S I M U L AT I O N F O R S U R G E R Y A N D I N T E R V E N T I O N A L R A D I O L O G Y Computer support for the study of operative techniques is motivated by the desire to avoid damage to patients  ... 
doi:10.1016/b978-0-12-415873-3.00021-3 fatcat:ppmxm5nogffzhergpc3imhnd6a
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