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Design & Use Of Large Tiled Display [James Morrison]


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Design & Use Of Large Tiled Display [James Morrison]

  1. 1. Designing and using a large tiled display for research visualisation James Morrison Systems Administrator Greenspace Research, Lews Castle College
  2. 2. Large tiled display • Large tiled displays are a group of monitors usually tiled as a grid ( display wall ) controlled generally by a cluster of computers
  3. 3. Comparison with projection Advantages: • Greatly increased resolution • No bulb lifetime • A cluster of computers which can also be used for data processing • Brightness, works well in a variety of light conditions Disadvantages: • Bezels ( edge of monitors )
  4. 4. Design considerations Aims ( where possible ): Open source software - that could be modified for our purposes and not require support contracts Standard off the shelf components -that are easily obtainable and reuseable.
  5. 5. Installed Examples OptIPortal Project in the United States a National Science Foundation funded project for building a series of display walls and high speed communication links for collaboration. Along with are a number of European and Australian partners.
  6. 6. Hardware 6 high end Dell workstations consisting of 1 frontend and 5 tile nodes. Each tile node has two video cards with dual outputs, each of the 4 outputs of a tile node are connected to one Dell 30” monitor. 20 Dell 30” monitors arranged in a 5 wide by 4 high grid giving a maximum resolution of 13250 by 6400 or 84.8 megapixels
  7. 7. Network Diagram Frontend / Master Slaves / Tile Nodes Dual Link DVI Gigabit Ethernet Interconnect
  8. 8. Software Rocks Cluster Distribution is a Linux distribution designed specifically for Linux clusters based on Centos. Rocks is customised with additional package called Rolls. In this case we added the Viz Roll which is intended for large tiled displays
  9. 9. Scalable Adaptive Graphics Environment SAGE developed by the University of Chicago is a distributed as part of the Rocks Viz Roll and is a core part of our use of the Display Wall. It has an array of applications to can be used with the display wall and simplified User Interface
  10. 10. Chromium - Google Earth Using Chromium ( an OpenGL implementation ) we can display the 3D output of any application that uses OpenGL including Google Earth
  11. 11. VNC Virtual Desktop By using SAGE’s VNC Viewer and the X VNC Server we can create Virtual Desktop that are suitable for the aspect ratio, size and any resolution.
  12. 12. Usability One click scripts: Display of CFD simulations and thermographic imagery Running VNC with a default windows desktop Running Google Earth with specific overlays Auto display of charted outputs from weather stations
  13. 13. Thoughts Fast Interconnect Video Capture Bezel Size, Resolution and Screen Distance
  14. 14. Any Questions?