High Performance Distributed Interactive Visualization

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High Performance DistributedInteractive
Visualization

• Advisors
• Dr. Karsten Schwan
• Dr. Matthew Wolf
• Zhongtang Cai
• Weiyun Huang

www.cercs.gatech.edu
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Research Application Molecular Dynamics

• Mechanical Engineering
• Physics

• Chemistry
• Aerospace Engineering

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Introduction

• Collaborate between highly heterogeneous
  platforms
• Jedi clusters
• SGI graphics servers
• Desktop workstations
• Handhelds like ipaq
• iPaqs ipaq as a control portal of other
  large-scale heterogeneous platform, e.g.
  Immersadesk.
• Remote Visualization and interaction for ipaq.
  Enhanced ipaq via high performance clusters via
  wireless network.
• ECho high performance event channels of large
  volume data sets
• Proactive Directory Service. Service directory
  and shared data consistency automatism.

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ECho Event-based Data Exchange

• Represent information flows as event streams
  (publish/subscribe model)
• Transparency of local and remote receivers via
  event channels, implemented with underlying
  peer-to-peer communications over TCP, UDP,
  Wireless, multicast, etc.
• Efficient, fully typed binary data transmission,
  based on dynamically defined event formats (PBIO)
• Dynamic extension of existing formats and
  discovery/operation on format contents
  (reflection)
• Interoperate with CORBA and Java (JECho) via IDL
  and XML

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ECho Source-based Filtering Achieving Data
Personalization via Dynamic Code Generation
Sink
F( )
Source
Filter Function
if ((data inside viewing area) and
((data values inside useful ranges))
return 1 / submit into channel /
return 0 / suppress data /
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Overview of the Smart PointerVisualization System
Filters
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Remote Visualization
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How about the performance

• Improvements with Remote Visualization
• Response Time to render a 3D scenario
• On Jedi 1s -2s
• Atoms 1000
• Bonds 100000
• Rendering algorithm Ray-tracing
• On iPaq 5s-7s
• Atoms 10
• Bonds 0
• Rendering algorithm Simple shading model
• If Atoms 1000, Bonds 100000?

- Ipaq will keep silent
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A Real Demo in this Room(Everyone is welcome to
play with!)
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References

• Event Services for High Performance Computing,
  Greg Eisenhauer, Fabian Bustamente and Karsten
  Schwan, Proceedings of High Performance
  Distributed Computing (HPDC-2000)
• Collaborative distributed virtual
  environmentTerrence.Disz et al
• Daniel A. Reed and C. E. Catlett. Distributed
  data and immersive collaboration. Communications
  of the ACM, 40(11)3849, November 1997.
• GridPort https//gridport.npaci.edu
• Access Grid https//www.accessgrid.org

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Thanks