Visualization Needs in Science and Technology

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Visualization Needs in Science and Technology

• Talk given to ASCI Workshop on Data Visualization
  Corridors for Large Scale Computing--User
  Perspectives
• March 5, 1998

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The Alliance National Technology Grid -
Prototyping the 21st Century Infrastructure
3
Divergence of Peak Capacity of DOE ASCI and NSF
PACI Supercomputers
Peak TFLOPS
4
How Alliance Application Teams Drive Software
Development

• Cosmology
• Metacomputing and Multiple Physical Scale
• Environmental Hydrology
• Immersive Collaboration
• Chemical Engineering
• Virtual Prototyping
• Bioinformatics
• Distributed Data
• Nanomaterials
• Remote Microengineering
• Scientific Instruments
• Virtual Observatories

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Alliance Visualization Development and
Deployment Partners
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Visualization Tool Kit (VTK) with Performer for
Rendering
DOD Modernization PET Program
VTK-From GE Corp. RD C classes for data I/O
and mapping data to graphics. Handles
unstructured grids as well as rectilinear and
structured
Polly Baker, Randy Heiland and Dave Bock,
NCSA Raju Namburu, Mike Stephens, CEWES, Kent
Eschenberg, Nichols Research Corp
7
Coupling Data Formats to Visualization - NCSAs
Hierarchical Data Format

• HDF Project Horizon
• Internet Access to Earth and Space Science Data
• Science Data Browser (SDB)
• To Provide Data Service for HDF Other Formats
• Java-based Viewers
• Java-based HDF Browser
• Standalone and Collaborative (Habanero) Versions
• General-purpose Image Viewer
• HDF ASCI
• The Data Models and Formats (DMF) Group
• HDF As the Open Standard Exchange Format and I/O
  Library
• ASCI HDF Requirements
• Must Support Large (gt a Terabyte) Datasets
• Must Handle ASCI Data Types, Especially Meshes
• Must Perform Well in Massive Parallel
  Environments
• Store Unstructured Data for Efficient
  Visualization

http//hdf.ncsa.uiuc.edu/
8
Limitations of Uniform Grids for Complex
Scientific and Engineering Problems
Fly Thru
Evolution
512x512x512 Run on 512-node CM-5
Source Greg Bryan, Mike Norman, NCSA
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Use of Shared Memory Adaptive Grids -Alliance
Cosmology Team
64x64x64 Run with Seven Levels of Adaption on SGI
Power Challenge, Locally Equivalent to
8192x8192x8192 Resolution
Source Greg Bryan, Mike Norman, John Shalf, NCSA
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Interactive VRML Viewing of Multi-Scale Adaptive
Grids
http//infinite-entropy.ncsa.uiuc.edu/Projects/Amr
Wireframe/
John Shalf (NCSA) on Greg Bryan Cosmology AMR Data
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Visual Supercomputing to the Desktop -- Server
Push Technology
Particles Moving Through Flow Field Computed on
SGI Octane Real Time Viewing Using Web Browser on
Win95 PC
http//woodall/dbock/projects/RemoteViewIndex.html
Polly Baker and David Bock, NCSA
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Gravity Waves Interactively Visualized from
Remote T3E SuperComputing97 Demo from
MPI-Garching
3-D
Source http//jean-luc.ncsa.uiuc.edu/Movies/Image
s
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Evolution of a Red Giant with White Dwarf Core-
Coupling the vBNS to Scalable Computing
128-processor SGI Origin Run for One
Week Generated Terabytes of Data
Surface View
Data Moved From NCSA over vBNS to U
Minnesota- Visualization at SC97 While Week-Long
Simulation Runs at NCSA vBNS Gives 500-Fold
Thruput Increase Over Commercial Internet!
Porter, Anderson, Habermann, Ruwart, Woodward ,
LCSE,Nov. 1997 www.lcse.umn.edu/RedGiant/
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Proposed National Analysis and Visualization
Facility
Joint Project of NCSA / LCSE / EVL
6400x4800 Pixel Display IMAX Film
Resolution Interactive VR
Silicon Graphics Reality Monster


Design by Laboratory for Computational Science
Engineering, Univ of Minnesota
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Visual Computational Steering -The University of
Utah SCIRun
Example Combustion C-SAFE SCIRun Network
Chris Johnson, SCI, Univ. of Utah, Alliance Viz
Team
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Visual Supercomputing GoalMake Analysis as
Powerful as Simulation

• Visualization Created Using Virtual Director in
  CAVE
• 1000 Hour SDSC Cray Supercomputer Run to
  Generate Data
• Tens of Thousands of Hours of NCSA SGI Time to
  Render Data
• Cross-Country Transfer to IMAX Film of Massive
  Amounts of Data

Colliding Galaxies (Smithsonian IMAX)-Donna Cox,
Bob Patterson, NCSA-From Cosmic
Voyage-Nominated for Academy Award 1997
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Working with the NCSA Virtual Director
Donna Cox, Bob Patterson, NCSA
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Alliance Virtual Environments Tools - Linking
CAVE to Vis5D CAVE5D
Interactive visualizations of time-varying,
3-dimensional Vis5D data sets in CAVE
environments
http//www.ncsa.uiuc.edu/VR/cavernus/CAVE5D/Cave5d
.html
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Using NCSAs Virtual Director in CAVE5D to
Create a Digital Video Output
Donna Cox, Robert Patterson, Stuart Levy,
NCSAVirtual Director Team
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Digital Video Created by Virtual Director
Supporting Analysis of Chesapeake Simulations
Alliance Environmental Hydrology Applications
Team Glen Wheless and Cathy Lascara, Center for
Coastal Physical Oceanography, Old Dominion
University
Fish Larvae at Mouth of the Bay 15 Day
Period Salinity (Red-High, Yellow-Low)
Donna Cox, Robert Patterson, Stuart Levy, NCSA
Virtual Director Team
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Alliance Researchers Using a Digital
VideoComputational Infrastructure
CAVE Virtual Director
Habanero Teams
Desktop Video Teleconferencing
Internet, vBNS
Individual Desktops
Create Digital Video Animation Concurrently with
Supercomputing
Digital Video Server
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Collaborative Virtual Environment -Environmental
Modeling
Coupling Chesapeake Bay Simulations and Databases
ImmersaDesks
DREN
SGI Onyx (CEWES) Vicksburg, MS
vBNS
SGI Onyx (NCSA)
SGI Onyx (U. Wisc)
SGI Onyx (Old Dominion)
Integrated M-Bone Videoteleconferencing
John Shalf,Polly Baker NCSA Mike Stephens and
Carl Cerco, CEWES
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Caterpillars Distributed Virtual Prototyping
Environment
Real Time Linked VR and Audio-Video Between NCSA
and Germany Using SGI Indy/Onyx and HP
Workstations
Data courtesy of Valerie Lehner, NCSA
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NCSA CRUMBS Volumetric Analysis Tools -From
Drosophila Sperm to Star Formation
Create a Quantitative Mathematical Model
(Splines) of 3D Substructure in Data Volume
Simulation by Dinshaw Balsara, NCSA, on PSC T3E
Confocal Microscopy by Tim Carr, UChicago
Possible to Use to Track Perturbations Through
Spacetime
Visualizations and CRUMBS Software by Rachael
Brady, NCSA
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Using NCSA Virtual Director to Explore Structure
of Density Isosurfaces of 2563 MHD Star Formation
Simulation by Dinshaw Balsara, NCSA on PSC
T3E/256 (3000 cpu-hours) Visualization by Bob
Patterson, NCSA
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Thunderstorm 1988 - Batch Process Scientific
Visualization
Simulation of a Severe Thunderstorm-Scale Tens of
Kilometers
http//www.ncsa.uiuc.edu/SCMS/Metascience/Articles
/ MS_Study-Numerically-Modeled-Severe-Storm-Wilhel
mson.html
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Multiple Tornadoes-The Real Thing
Observation of a Multiple Landspouts-Each on
Scale of Tens of Meters
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Multiple Tornado Simulation Analysis in the CAVE
using Virtual Director
Yellow Iso Vorticity Trajectories Wind
Flow Grey Iso Rainwater Cloud
Donna Cox, Robert Patterson, Stuart Levy, NCSA
Virtual Director Team Bruce Lee Bob Wilhelmson,
3000 cpu-hour CM-5 Simulation