Larry S. Jackson

1
Java Collaborative TechnologySelections in NCSA
Habanero

• Larry S. Jackson
• National Computational Science Alliance
• National Center for Supercomputing Applications
• University of Illinois
• Urbana-Champaign, Illinois, USA
• --
• jackson_at_ncsa.uiuc.edu
• http//www.ncsa.uiuc.edu/people/jackson

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Vision of the Java/Collaborative Future

• "Everybody benefits" from high-end science
  analysis

Java / Habanero Object Sharing
Highly-Variable Available Internet Bandwidth
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All-Platform Collaboration with Optional
Bandwidth Reduction Measures

• A Real-World Environmental Support Examplefrom
  MIT Chemical Engineering

Researcher Workstations, Office Home Computers
High-End Environments
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Simplified Java Applet "Sandbox"
Host Operating System and Support Services
Parent Web Server
Web Browser
Browser's Java Virtual Machine
Java Applet
CGI Adjuncts
Java Applet
RemoteSockets
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Simplified Plug-Ins
Host Operating System and Support Services
Parent Web Server
Web Browser
Other Web Servers
RemoteSockets
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Simplified Habanero "Helper App"
Host Operating System and Support Services
Parent Web Server
Web Browser
MIME - EncodedData Packets
Habanero
Other Web Servers
OtherHabaneros
RemoteSockets
7
Typical Event Propagation in Applications
Application
handler
Application Layers
event
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Habanero's Event Interception
Habanero Server
Application
Application
Arbitration
handler
handler
Broadcast
event
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Expanding Arbitration FunctionalityApproaching
Traditional "Client-Server"

• x

Habanero Server
Databases
Arbitration
GraphicsEngines
Broadcast
Habanero (Thin) Client
Habanero (Thin) Client
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State Sharing Via Encapsulation in Serialized
Java Objects

• All event-based tools sharable via one
  mechanism.
  
• --
• Therefore, also recordable, serachable, and
  replayablevia one mechanism.
  
• --
• Takes some time to serialize the objects. Not
  well suited for "huge" objects and/or continuous
  high-volume data streams.

11
Search Replay in a Recorded Telemedecine
Collaborative Session
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"Stress Test" by Multiple Complex Tools DARPA
GeoWorlds Disaster Management

• GIS from UCSB and USC

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"Stress Test" by Multiple Complex Tools DARPA
GeoWorlds Disaster Management

• Multi-Valent Documents from UC Berkeley
• -- group-annotatable web pages

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"Stress Test" by Multiple Complex Tools DARPA
GeoWorlds Disaster Management

• VRML Semantic Cluster display browseU Arizona,
  UIUC CANIS, NCSA Java3D

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Other Advanced Projects Trials

• US National Imagery Management Agency Kodak
• collaborative analysis of very-high resolution
  imagery
  
• --
• US Department of Energy / Pacific Northwest
  National Lab's
  
• Environmental Molecular Sciences Lab
• Extensible Computational Chemistry Environment
  projects,
  
• with the CNRS (France) UIUC corrosion research
  team,
  
• and NCSA's chemical engineering nanomaterials
  teams
  

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Other Advanced Projects Trials

• US Nuclear Regulatory Commission US Department
  of Energy's Oak Ridge National Lab
  
• collaborative fracture mechanics analysis
• --
• US Census Bureau National Science
  Foundation,Cornell American Universities
  
• linked employer-household records analysis(also
  interested US Urban Inst., NIH, National Inst.
  on Aging, Social Security Admin., EU, EuroStat
  U. Durham (England), World Bank, World Health
  Organization)

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Other Advanced Projects Trials

• US NavySPAWAR collaborative virtual environments
  research,
  
• and collaboration infrastructure evaluation
  forPacific Command Headquarters
  
• Boeing Phantom Works, Advanced Systems
  Laboratory
  
• in-flight communications control

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Java3D Results To Date

• You-Build-It zero-programming collaborative VR
  space
  
• VisAD collaborative immersive environmental
  hydrology tool
  
• (proceedings readers see author's homepage for
  these MPEGs)
  
• (click to play)

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Conclusion Ready for "Prime Time"

• A sufficient research infrastructure exists to
  begin full-scale experimentation with design
  analysis tools in sciences, concurrent/distributed
  engineering, and science education.
• --
• COTS offers no clear technology "winner" yet, but
  rich real-time interaction capability via
  Internet is clearly possible.
  
• --
• Work need no longer be rigid phases of "work in
  isolation" and "meetings". It can now be a
  continuum-- once our tools are upgraded to
  leverage Internet.

20
Java Collaborative TechnologySelections in NCSA
Habanero

• Larry S. Jackson
• National Computational Science Alliance
• National Center for Supercomputing Applications
• University of Illinois
• Urbana-Champaign, Illinois, USA
• --
• jackson_at_ncsa.uiuc.edu
• http//www.ncsa.uiuc.edu/people/jackson