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TeraGrid is a national-scale computational science facility supported through a partnership among thirteen institutions, with funding from the US National Science Foundation [1]. Initially created through a Major Research Equipment Facilities Construction (MREFC [2]) award in 2001, the TeraGrid facility began providing production computing, storage,(More)
While interactive visualization of rectilinear gridded volume data sets can now be accomplished using texture mapping hardware on commodity PCs, interactive rendering and exploration of large scattered or unstructured data sets is still a challenging problem. We have developed a new approach that allows the interactive rendering and navigation of(More)
Functional approximation of scattered data is a popular technique for compactly representing various types of datasets in computer graphics, including surface, volume, and vector datasets. Typically, sums of Gaussians or similar radial basis functions are used in the functional approximation and PC graphics hardware is used to quickly evaluate and render(More)
(a) (b) (c) (d) Figure 1: Examples of oriented structural flow visualizations harnessing the effectiveness of illustrative and photographic flow techniques. (a) is an illustrative drawing of temperature advection in a convection dataset. The left half shows a normal volume rendering while the right half shows a contour volume rendering using a da(More)
Figure 1: Four visualizations of RBF encoded datasets. Left image: Interactively extracted and volume rendered vorticity from the Tornado dataset encoded with 2,100 RBFs. Second: Traces of 110 particles tracked in experimentally obtained Channel dataset encoded with 2,105 RBFs. Third image: Volume rendering of water pressure for an injection well. The(More)
A procedure is presented for anisotropic adaptation of inviscid type flow features with CFD simulation using an unstructured grid. The basic grid generation scheme is an existing advancing–front, local–reconnection (AFLR) procedure. This procedure is modified to allow the field point spacing and alignment to vary based on a flow field solution using(More)
Currently, user centered transfer function design begins with the user interacting with a one or two-dimensional histogram of the volumetric attribute space. The attribute space is visualized as a function of the number of voxels, allowing the user to explore the data in terms of the attribute size/magnitude. However, such visualizations provide the user(More)
We present a data-parallel algorithm for identifying and labeling the connected sub-meshes within a domaindecomposed 3D mesh. The identification task is challenging in a distributed-memory parallel setting because connectivity is transitive and the cells composing each sub-mesh may span many or all processors. Our algorithm employs a multi-stage application(More)
—DisplayCluster is an interactive visualization environment for cluster-driven tiled displays. It provides a dynamic, desktop-like windowing system with built-in media viewing capability that supports ultra high-resolution imagery and video content and streaming that allows arbitrary applications from remote sources (such as laptops or remote visualiza-tion(More)