http://www.sci.utah.edu/gallery2/v/sci/visualization/ en-us Gallery 2 RSS Module, version 1.1.7 Thu, 20 Jun 2013 07:33:05 -0600 120 http://www.sci.utah.edu/gallery2/d/3198-7/visualization.png http://www.sci.utah.edu/gallery2/v/sci/visualization/ http://www.sci.utah.edu/gallery2/v/sci/visualization/MTV.html http://www.sci.utah.edu/gallery2/v/sci/visualization/MTV.html
MTV exposes aspects of computer programs normally hidden from developers by compilers and hardware. By making reference traces accessible through visualization, MTV enables developers to create higher-performance software.

Research Team:
A.N.M Imroz Choudhury, Kristin C. Potter, Steven G. Parker

This work was supported in part by the U.S. Department of Energy (DOE) through the Center for the Simulation of Accidental Fires and Explosions (C-SAFE).]]> Nathan Galli photo Tue, 05 Mar 2013 16:18:15 -0700 http://www.sci.utah.edu/gallery2/v/sci/visualization/MemCache.html http://www.sci.utah.edu/gallery2/v/sci/visualization/MemCache.html
We present a system for abstract visualization of memory cache behavior whose purpose is to better understand the behavior of algorithms within a system’s cache. Our system provides an abstract view of the underlying hardware and software infrastructure by representing memory as glyphs which move between various levels of the memory hierarchy. This allows students and software engineers to gain valuable insights into the design of their software by means of visual analysis.]]> Nathan Galli photo Tue, 05 Mar 2013 16:18:15 -0700 http://www.sci.utah.edu/gallery2/v/sci/visualization/SpiralGalaxy.html http://www.sci.utah.edu/gallery2/v/sci/visualization/SpiralGalaxy.html
Rendering of a spiral galaxy simulation consisting of 512 time steps of 100 million particles (stars) per time step. Rendered using the Manta Interactive Ray Tracer by making each particle a transparent sphere with transparency decreasing with increasing galaxy radius. Color map corresponds to particle speed.

We visualize a 1.5TB time varying simulation of a spiral galaxy being formed. There are 512 time steps, each of which contains 100 million particles produced by a smooth particle hydrodynamics (SPH) simulation. Traditionally, this is rendered by creating a density field from the particles and then rendering the volume. However, we rendered this video by directly ray tracing the particles using the Manta Interactive Ray Tracer. Each particle is made transparent, with transparency decreasing as particles move further away from the galaxy center. The variable transparency allows for the spiral structure to be easily observed. The color map corresponds to particle speed.]]> Nathan Galli photo Tue, 05 Mar 2013 16:18:15 -0700 http://www.sci.utah.edu/gallery2/v/sci/visualization/StellarMag.html http://www.sci.utah.edu/gallery2/v/sci/visualization/StellarMag.html
Images produced using VAPOR, a product of the National Center for Atmospheric Research. Simulations run on PSC, NICS.
Rendering performed on TACC and Longhorn an NSF-XD Visualization resource.

Rendering conducted by GLuRay in conjunction with the interactive ray tracer Manta from the Scientific Computing and Imaging Institute. Benjamin Brown (UW & CMSO).

A Sun-like star undergoes magnetic cyclic reversal shown by fieldlines colored by the longitudinal magnetic field (red positive, blue negative polarity). Shifts in red and blue demonstrate large-scale polarity changes in the star. One such cycle is shown here, and at the end of the visualization, the magnetic poles are reversed.]]> Nathan Galli photo Tue, 05 Mar 2013 16:18:15 -0700 http://www.sci.utah.edu/gallery2/v/sci/visualization/TopoQuad.html http://www.sci.utah.edu/gallery2/v/sci/visualization/TopoQuad.html
Quadrilateral meshing is a challenging task in which it is important to balance objective and subjective quality criteria.

As a result, domain experts typically construct their models manually, for explicit control over the final mesh structure.

In this work, we describe an approach that provides a fast and flexible user-centric meshing process; introducing Reeb Atlases and connectivity textures.]]> Nathan Galli photo Tue, 05 Mar 2013 16:18:15 -0700 http://www.sci.utah.edu/gallery2/v/sci/visualization/Discrete_Gradient.html http://www.sci.utah.edu/gallery2/v/sci/visualization/Discrete_Gradient.html
This video presents a visualization of a recent algorithm to compute discrete gradient fields on regular cell complexes [3]. Discrete gradient fields are used in practical methods that robustly translate smooth Morse theory to combinatorial do- mains. We describe the stages of the algorithm, highlighting both its simplicity and generality.]]> Nathan Galli photo Tue, 05 Mar 2013 16:18:15 -0700 http://www.sci.utah.edu/gallery2/v/sci/visualization/HDScalar.html http://www.sci.utah.edu/gallery2/v/sci/visualization/HDScalar.html
Research Team: Samuel Gerber, Peer-Timo Bremer, Valerio Pascucci, Ross Whitaker.]]> Nathan Galli photo Tue, 05 Mar 2013 16:18:15 -0700 http://www.sci.utah.edu/gallery2/v/sci/visualization/Discrete_Morse.html http://www.sci.utah.edu/gallery2/v/sci/visualization/Discrete_Morse.html
Research Team: Evrard Freddy Ohou, Attilla Gyulassy, Joshua A. Levine, Valerio Pascucci.]]> Nathan Galli photo Tue, 05 Mar 2013 16:18:15 -0700 http://www.sci.utah.edu/gallery2/v/sci/visualization/EnsembleVis.html http://www.sci.utah.edu/gallery2/v/sci/visualization/EnsembleVis.html
Research Team

Kristin Potter, Andrew Wilson, Yan Zheng, Peer-Timo Bremer, Dean Williams, Valerio Pascucci, Chris Johnson.]]> Nathan Galli photo Tue, 05 Mar 2013 16:18:15 -0700 http://www.sci.utah.edu/gallery2/v/sci/visualization/pedvis_overview.html http://www.sci.utah.edu/gallery2/v/sci/visualization/pedvis_overview.html
Visualization by Claurissa Tuttle

A Structured Space Efficient Technique For Visualizing Pedigree Data]]> Nathan Galli photo Tue, 05 Mar 2013 16:18:14 -0700