Visualization Needs in
Science and Technology
• Talk given to ASCI Workshop on Data
Visualization Corridors for Large Scale
Computing--User Perspectives
• March 5, 1998
National Computational Science Alliance
The Alliance National Technology Grid Prototyping the 21st Century Infrastructure
National Computational Science Alliance
Divergence of Peak Capacity of
DOE ASCI and NSF PACI Supercomputers
35
25
DOE
20
NSF
15
10
5
2002
2001
2000
1999
1998
1997
0
1996
Peak TFLOPS
30
National Computational Science Alliance
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
National Computational Science Alliance
Alliance Visualization
Development and Deployment Partners
National Computational Science Alliance
Visualization Tool Kit (VTK)
with Performer for Rendering
DOD Modernization PET Program
VTK-From GE Corp. R&D
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
National Computational Science Alliance
Coupling Data Formats to Visualization NCSA’s 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 (> 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/
National Computational Science Alliance
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
National Computational Science Alliance
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
National Computational Science Alliance
Interactive VRML Viewing of
Multi-Scale Adaptive Grids
http://infinite-entropy.ncsa.uiuc.edu/Projects/AmrWireframe/
John Shalf (NCSA) on Greg Bryan Cosmology AMR Data
National Computational Science Alliance
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
National Computational Science Alliance
Gravity Waves Interactively Visualized from Remote T3E
SuperComputing’97 Demo from MPI-Garching
2-D
3-D
Source: http://jean-luc.ncsa.uiuc.edu/Movies/Images
National Computational Science Alliance
Evolution of a Red Giant with White Dwarf CoreCoupling the vBNS to Scalable Computing
128-processor
SGI Origin
Surface
View
Run for One
Week
Generated
Terabytes of
Data
Data Moved From NCSA over vBNS to U MinnesotaVisualization 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/
National Computational Science Alliance
Proposed National Analysis and Visualization
Facility
Joint Project of NCSA / LCSE / EVL
6400x4800
Pixel Display
IMAX Film Resolution
Interactive VR
Silicon Graphics Reality Monster™
64 R10000 Processors
32 GigaBytes Main Memory
8 Infinite Reality™ Graphics Engines
16 Fibre Channel Ports
8 HiPPI and ATM Channels
Fibre Channel Disk Arrays
1.12 TeraBytes total space
1.2 GB/sec Sustained Bandwidth
Design by Laboratory for Computational Science & Engineering, Univ of Minnesota
National Computational Science Alliance
Visual Computational Steering The University of Utah SCIRun
Example Combustion C-SAFE SCIRun Network
Chris Johnson, SCI, Univ. of Utah, Alliance Viz Team
National Computational Science Alliance
Visual Supercomputing Goal:
Make 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
National Computational Science Alliance
Working with the NCSA Virtual Director
Donna Cox, Bob Patterson, NCSA
National Computational Science Alliance
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
National Computational Science Alliance
Using NCSA’s Virtual Director in CAVE5D
to Create a Digital Video Output
Donna Cox, Robert Patterson, Stuart Levy,
NCSAVirtual Director Team
National Computational Science Alliance
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
National Computational Science Alliance
Alliance Researchers Using a Digital Video
Computational Infrastructure
CAVE Virtual Director
Habanero
Teams
Internet,
vBNS
Desktop Video
Teleconferencing
Individual Desktops
Create Digital Video Animation
Concurrently with Supercomputing
Digital Video
Server
= Digital Video Streams
National Computational Science Alliance
Collaborative Virtual Environment Environmental Modeling
Coupling Chesapeake Bay Simulations and Databases
ImmersaDesks
SGI Onyx
(CEWES)
DREN
Vicksburg, MS
vBNS
SGI Onyx
(NCSA)
Integrated M-Bone Videoteleconferencing
SGI Onyx
(Old Dominion)
John Shalf,Polly Baker NCSA; Mike Stephens and Carl Cerco, CEWES
SGI Onyx
(U. Wisc)
National Computational Science Alliance
Caterpillar’s 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
National Computational Science Alliance
NCSA CRUMBS Volumetric Analysis Tools From Drosophila Sperm to Star Formation
Create a Quantitative Mathematical Model (Splines) of
3D Substructure in Data Volume
Confocal Microscopy by Tim Carr, UChicago
Simulation by Dinshaw Balsara, NCSA, on PSC T3E
Possible to Use to Track Perturbations Through Spacetime
Visualizations and CRUMBS Software by Rachael Brady, NCSA
National Computational Science Alliance
Using NCSA Virtual Director to Explore Structure of
Density Isosurfaces of 2563 MHD Star Formation
Red Iso = 4x Mean Density
Yellow Iso = 8x Mean Density
Red Iso = 12x Mean Density
Isosurface models generated by Vis5d
Choreographed with Cave5D/VirDir
Rendered with Wavefront on SGI Onyx
Simulation by Dinshaw Balsara, NCSA on PSC T3E/256 (3000 cpu-hours);
Visualization by Bob Patterson, NCSA
National Computational Science Alliance
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-Wilhelmson.html
National Computational Science Alliance
Multiple TornadoesThe Real Thing
Observation of a Multiple Landspouts-Each on Scale of Tens of Meters
National Computational Science Alliance
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
National Computational Science Alliance