national computational science alliance visualization needs in science and technology talk given to...

National Computational Science Alliance

Visualization Needs in Science and Technology

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

• March 5, 1998


The Alliance National Technology Grid - Prototyping the 21st Century Infrastructure


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NSF

Divergence of Peak Capacity of DOE ASCI and NSF PACI Supercomputers

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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


Alliance Visualization Development and Deployment Partners


Visualization Tool Kit (VTK) with Performer for Rendering

Polly Baker, Randy Heiland and Dave Bock, NCSA

Raju Namburu, Mike Stephens, CEWES, Kent Eschenberg, Nichols Research Corp

DOD Modernization PET Program

VTK-From GE Corp. R&DC++ classes for data I/O and mapping data to graphics. Handles unstructured grids as well as rectilinear and structured

National Computational Science Alliancehttp://hdf.ncsa.uiuc.edu/

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


Limitations of Uniform Grids for Complex Scientific and Engineering Problems

Source: Greg Bryan, Mike Norman, NCSA

512x512x512 Run on 512-node CM-5

Evolution Fly Thru


Use of Shared Memory Adaptive Grids -Alliance Cosmology Team

Source: Greg Bryan, Mike Norman, John Shalf, NCSA

64x64x64 Run with Seven Levels of Adaption on SGI Power Challenge,Locally Equivalent to 8192x8192x8192 Resolution


Interactive VRML Viewing of Multi-Scale Adaptive Grids

John Shalf (NCSA) on Greg Bryan Cosmology AMR Data

http://infinite-entropy.ncsa.uiuc.edu/Projects/AmrWireframe/


Visual Supercomputing to the Desktop -- Server Push Technology

http://woodall/dbock/projects/RemoteViewIndex.html

Polly Baker and David Bock, NCSA

Particles Moving Through Flow Field Computed on SGI OctaneReal Time Viewing Using Web Browser on Win95 PC


3-D

2-D

Source: http://jean-luc.ncsa.uiuc.edu/Movies/Images

Gravity Waves Interactively Visualized from Remote T3E SuperComputing’97 Demo from MPI-Garching


Evolution of a Red Giant with White Dwarf Core- Coupling the vBNS to Scalable Computing

Porter, Anderson, Habermann, Ruwart, & Woodward , LCSE,Nov. 1997www.lcse.umn.edu/RedGiant/

Data Moved From NCSA over vBNS to U Minnesota-Visualization at SC97 While Week-Long Simulation Runs at NCSAvBNS Gives 500-Fold Thruput Increase Over Commercial Internet!

Surface View

128-processor SGI Origin

Run for One Week

Generated Terabytes of

Data


Proposed National Analysis and Visualization Facility

Fibre Channel Disk Arrays 1.12 TeraBytes total space

1.2 GB/sec Sustained Bandwidth

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

6400x4800 Pixel Display

IMAX Film ResolutionInteractive VR

Joint Project of NCSA / LCSE / EVL

Design by Laboratory for Computational Science & Engineering, Univ of Minnesota


Visual Computational Steering -The University of Utah SCIRun

Example Combustion C-SAFE SCIRun Network

Chris Johnson, SCI, Univ. of Utah, Alliance Viz Team


Visual Supercomputing Goal:Make Analysis as Powerful as Simulation

Colliding Galaxies (Smithsonian IMAX)-Donna Cox, Bob Patterson, NCSA-From “Cosmic Voyage”-Nominated for Academy Award 1997

• 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


Working with the NCSA Virtual Director

Donna Cox, Bob Patterson, NCSA


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


Using NCSA’s Virtual Director in CAVE5D to Create a Digital Video Output

Donna Cox, Robert Patterson, Stuart Levy, NCSAVirtual Director Team


Digital Video Created by Virtual Director Supporting Analysis of Chesapeake Simulations

Alliance Environmental Hydrology Applications TeamGlen Wheless and Cathy Lascara,

Center for Coastal Physical Oceanography, Old Dominion University

Donna Cox, Robert Patterson, Stuart Levy, NCSA Virtual Director Team

Fish Larvae at Mouth of the Bay15 Day Period

Salinity (Red-High, Yellow-Low)


Alliance Researchers Using a Digital VideoComputational Infrastructure

= Digital Video Streams

Digital VideoServer

Internet, vBNS

Habanero Teams

Create Digital Video Animation Concurrently with Supercomputing

CAVE Virtual Director

Individual Desktops

Desktop VideoTeleconferencing


Collaborative Virtual Environment -Environmental Modeling

ImmersaDesks

vBNS

DREN

SGI Onyx(NCSA)

Integrated M-Bone Videoteleconferencing

John Shalf,Polly Baker NCSA; Mike Stephens and Carl Cerco, CEWES

SGI Onyx(Old Dominion)

SGI Onyx(U. Wisc)

Coupling Chesapeake Bay Simulations and Databases

SGI Onyx (CEWES)

Vicksburg, MS


Caterpillar’s Distributed Virtual Prototyping Environment

Data courtesy of Valerie Lehner, NCSA

Real Time Linked VR and Audio-Video Between NCSA and Germany

Using SGI Indy/Onyx and HP Workstations


NCSA CRUMBS Volumetric Analysis Tools -From Drosophila Sperm to Star Formation

Visualizations and CRUMBS Software by Rachael Brady, NCSA

Simulation by Dinshaw Balsara, NCSA, on PSC T3EConfocal Microscopy by Tim Carr, UChicago

Create a Quantitative Mathematical Model (Splines) of 3D Substructure in Data Volume

Possible to Use to Track Perturbations Through Spacetime


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

Red Iso = 4x Mean DensityYellow Iso = 8x Mean DensityRed Iso = 12x Mean Density

Isosurface models generated by Vis5dChoreographed with Cave5D/VirDir

Rendered with Wavefront on SGI Onyx


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


Multiple Tornadoes-The Real Thing

Observation of a Multiple Landspouts-Each on Scale of Tens of Meters


Multiple Tornado Simulation Analysis in the CAVE using Virtual Director

Donna Cox, Robert Patterson, Stuart Levy, NCSA Virtual Director TeamBruce Lee & Bob Wilhelmson, 3000 cpu-hour CM-5 Simulation

Yellow Iso = VorticityTrajectories = Wind Flow

Grey Iso = Rainwater Cloud

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