What Is Your Problem? (cont'd)

• Pictures?
  • Runtime graphics xde data reduction
    • processor syncronization

    • interprocessor communication

  • Postprocessing for graphics
    • Parallel I/O (at least O)
      • this is a research area

    • Access pieces small enough to handle on postprocessing machine
      • For MPP-sized problems, this is important.
        • 256-node Cray T3D: 16GB

        • SGI Onyx, largish: 500MB

    • Canned graphics packages will not work on distributed data.

In general, anything non-local in the space of computation requires special handling.

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