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检索条件"任意字段=6th Eurographics Symposium on Parallel Graphics and Visualization, EGPGV 2006"

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eurographics symposium on parallel graphics and visualization, egpgv 2006

Eurographics Symposium on Parallel Graphics and Visualizatio...

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6th eurographics symposium on parallel graphics and visualization, egpgv 2006

ISBN: (纸本)3905673401

the proceedings contain 20 papers. the topics discussed include: rendering on demand;an application of scalable massive model interaction using shared-memory systems;accelerating the irradiance cache through parallel component-based rendering;parallel simulation of cloth on distributed memory architectures;dynamic load balancing for parallel volume rendering;interactive volume rendering of unstructured grids with time-varying scalar fields;optimized volume raycasting for graphics-hardware-based cluster systems;accelerated volume rendering with homogeneous region encoding using extended anisotropic chessboard distance on GPU;parallel texture-based vector field visualization on curved surfaces using GPU cluster computers;and distributed force-directed graph layout and visualization.

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Multi-layered image caching for distributed rendering of large multiresolution datasets

Multi-layered image caching for distributed rendering of lar...

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6th eurographics symposium on parallel graphics and visualization, egpgv 2006

作者： Strasser, Jonathan Pascucci, Valerio Ma, Kwan-Lui University of California Davis United States Lawrence Livermore National Laboratory

ISBN: (纸本)3905673401

the capability to visualize large volume datasets has applications in a myriad of scientific fields. this paper presents a large data visualization solution in the form of distributed, multiresolution, progressive processing. this solution reduces the problem of rendering a large volume data into many simple and independent problems that can be straightforwardly distributed to multiple computers. By completely decoupling rendering and display with image caching, we are able to maintain a high level of interactivity during exploration of the data, which is key to obtaining insights into the data. © the eurographics Association 2006.

关键词： visualization

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parallel simulation of cloth on distributed memory architectures

Parallel simulation of cloth on distributed memory architect...

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6th eurographics symposium on parallel graphics and visualization, egpgv 2006

作者： thomaszewski, B. Blochinger, W. WSI/GRIS Universität Tübingen Germany Symbolic Computation Group Universität Tübingen Germany

ISBN: (纸本)3905673401

the physically based simulation of clothes in virtual environments is a highly demanding problem. It involves both modeling the internal material properties of the textile and the interaction with the surrounding scene. We present a parallel cloth simulation approach designed for distributed memory parallel architectures, in particular clusters built of commodity components. In this paper, we focus on the parallelization of the collision handling phase. In order to cope with the high irregularity of this problem we employ a task parallel approach with fully dynamic problem decomposition. this leads to a robust algorithm, regardless of the complexity of the scene. We report on initial performance measurements indicating the usefulness of our approach. © the eurographics Association 2006.

关键词： parallel architectures

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Piggybacking for more efficient parallel out-of-core isosurfacing

Piggybacking for more efficient parallel out-of-core isosurf...

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6th eurographics symposium on parallel graphics and visualization, egpgv 2006

作者： Newman, Timothy S. Ma, Wenjun Department of Computer Science University of Alabama in Huntsville HuntsvilleAL35899 United States

ISBN: (纸本)3905673401

A scheme for improving the efficiency of parallel isosurfacing for very large datasets is presented. the scheme is aimed at improving performance in multi-processor environments, especially for environments in which interprocessor communication limitations become a bottleneck, such as when the number of processors can scale up without commensurate scale up in inter-processor communication bandwidth. the scheme enables load-balanced computation while also limiting unnecessary communication between processors through the use of communication piggybacking and interleaving. Empirical results are also presented and suggest that the scheme reduces communication by about 15% and overall isosurfacing time by about 13% over a highly efficient non-piggybacked parallel isosurfacing approach. © the eurographics Association 2006.

关键词： parallel processing systems

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Dynamic load balancing for parallel volume rendering

Dynamic load balancing for parallel volume rendering

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6th eurographics symposium on parallel graphics and visualization, egpgv 2006

作者： Marchesin, Stéphane Mongenet, Catherine Dischler, Jean-Michel LSIIT UMR CNRS-ULP 7005 Louis Pasteur University Strasbourg France

ISBN: (纸本)3905673401

parallel volume rendering is one of the most efficient techniques to achieve real time visualization of large datasets by distributing the data and the rendering process over a cluster of machines. However, when using level of detail techniques or when zooming on parts of the datasets, load unbalance becomes a challenging issue that has not been widely studied in the context of hardware-based rendering. In this paper, we address this issue and show how to achieve good load balancing for parallel level of detail volume rendering. We do so by dynamically distributing the data among the rendering nodes according to the load of the previous frame. We illustrate the efficiency of our technique on large datasets. © the eurographics Association 2006.

关键词： Volume rendering

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Optimized volume raycasting for graphics-hardware-based cluster systems

Optimized volume raycasting for graphics-hardware-based clus...

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6th eurographics symposium on parallel graphics and visualization, egpgv 2006

作者： Müller, C. Strengert, M. Ertl, T. Institute for Visualization and Interactive Systems University of Stuttgart Germany

ISBN: (纸本)3905673401

In this paper, we present a sort-last parallel volume rendering system based on single-pass volume raycasting performed in the fragment shader unit. the architecture is aimed for displaying data sets that utilize the total distributed texture memory at interactive framerates. We use uniform texture bricks that are distributed by means of a kd-tree to employ object space partitioning. they are further used for implementing empty-space-skipping and a load balancing mechanism, which also makes use of the kd-tree, to increase the overall performance of the rendering system. Performance numbers are given for a mid-range GPU-cluster system consisting of eight render nodes with an Infiniband interconnection. © the eurographics Association 2006.

关键词： Cluster analysis

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Distributed force-directed graph layout and visualization

Distributed force-directed graph layout and visualization

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6th eurographics symposium on parallel graphics and visualization, egpgv 2006

作者： Mueller, Christopher Gregor, Douglas Lumsdaine, Andrew Open Systems Laboratory Indiana University BloomingtonIN47405 United States

ISBN: (纸本)3905673401

While there exist many interactive tools for the visualization of small graphs and networks, these tools do not address the fundamental problems associated with the visualization of large graphs. In particular, larger graphs require much larger display areas (e.g., display walls) to reduce visual clutter, allowing users to determine the structure of large graphs. Moreover, the layout algorithms employed by these graph visualization tools do not scale to larger graphs, thereby forcing users into a batch-oriented process of generating layouts offline and later viewing of static graph images. In this paper, we present a parallel graph layout algorithm based on the Fruchterman-Reingold force-directed layout algorithm and demonstrate its implementation in a distributed rendering environment. the algorithm uses available distributed resources for both compute and rendering tasks, animating the graph as the layout evolves. We evaluate the algorithm for scalability and interactivity and discuss variations that minimize communication for specific types of graphs and applications. © the eurographics Association 2006.

关键词： visualization

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parallel particle rendering: A performance comparison between Chromium and Aura

Parallel particle rendering: A performance comparison betwee...

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6th eurographics symposium on parallel graphics and visualization, egpgv 2006

作者： van der Schaaf, Tom Koutek, Michal Bal, Henri Faculty of Sciences Vrije Universiteit De Boelelaan 1081 Amsterdam1081 HV Netherlands Faculty of Information Technology and Systems Delft University of Technology Netherlands

ISBN: (纸本)3905673401

In the fields of high performance computing and distributed rendering, there is a great need for a flexible and scalable architecture that supports coupling of parallel simulations to commodity visualization clusters. the most popular architecture that allows such flexibility, called Chromium, is a parallel implementation of OpenGL. It has sufficient performance on applications with static scenes, but in case of more dynamic content this approach often fails. We have developed Aura, a distributed scene graph library, which allows optimized performance for both static and more dynamic scenes. In this paper we compare the performance of Chromium and Aura. For our performance tests, we have selected a dynamic particle system application, which reveals several issues with the Chromium approach of implementing the OpenGL API. Because our distributed scene graph architecture was designed with a different approach, the test results will show that it performs better on this application. © the eurographics Association 2006.

关键词： Chromium

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parallel texture-based vector field visualization on curved surfaces using GPU cluster computers

Parallel texture-based vector field visualization on curved ...

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6th eurographics symposium on parallel graphics and visualization, egpgv 2006

作者： Bachthaler, S. Strengert, M. Weiskopf, D. Ertl, T. Institute of Visualization and Interactive Systems University of Stuttgart Germany School of Computing Science Simon Fraser University Canada

ISBN: (纸本)3905673401

We adopt a technique for texture-based visualization of flow fields on curved surfaces for parallel computation on a GPU cluster. the underlying LIC method relies on image-space calculations and allows the user to visualize a full 3D vector field on arbitrary and changing hypersurfaces. By using parallelization, both the visualization speed and the maximum data set size are scaled with the number of cluster nodes. A sort-first strategy with image-space decomposition is employed to distribute the workload for the LIC computation, while a sort-last approach with an object-space partitioning of the vector field is used to increase the total amount of available GPU memory. We specifically address issues for parallel GPU-based vector field visualization, such as reduced locality of memory accesses caused by particle tracing, dynamic load balancing for changing camera parameters, and the combination of image-space and object-space decomposition in a hybrid approach. Performance measurements document the behavior of our implementation on a GPU cluster with AMD Opteron CPUs, NVIDIA GeForce 6800 Ultra GPUs, and Infiniband network connection. © the eurographics Association 2006.

关键词： graphics processing unit

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Remote large data visualization in the paraview framework

Remote large data visualization in the paraview framework

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6th eurographics symposium on parallel graphics and visualization, egpgv 2006

作者： Cedilnik, Andy Geveci, Berk Moreland, Kenneth Ahrens, James Favre, Jean Kitware Inc. Clifton ParkNY United States Sandia National Laboratories AlbuquerqueNM United States Los Alamos National Laboratory Los AlamosNM United States Swiss National Supercomputing Centre Switzerland

ISBN: (纸本)3905673401

Scientists are using remote parallel computing resources to run scientific simulations to model a range of scientific problems. visualization tools are used to understand the massive datasets that result from these simulations. A number of problems need to be overcome in order to create a visualization tool that effectively visualizes these datasets under this scenario. Problems include how to effectively process and display massive datasets and how to effectively communicate data and control information between the geographically distributed computing and visualization resources. We believe a solution that incorporates a data parallel data server, a data parallel rendering server and client controller is key. Using this data server, render server, client model as a basis, this paper describes in detail a set of integrated solutions to remote/distributed visualization problems including presenting an efficient M to N parallel algorithm for transferring geometry data, an effective server interface abstraction and parallel rendering techniques for a range of rendering modalities including tiled display walls and CAVEs. © the eurographics Association 2006.

关键词： visualization

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