HELP! * YELLOW=global GREY=local Global HTML version of Foils prepared July 6 1996

Foil 21 What software systems are appropriate for what problem architectures -- II?

From HPCC Current Status: Software Trip to China -- July 12-28,96. by Geoffrey Fox * See also color IMAGE
Loosely Synchronous: Irregular in Space, Regular in Time
  • Tightly coupled, Dynamic, Loosely Synchronous
  • e.g. Finite elements
  • Particle dynamics
Fortran + Message Passing "works but is not portable
Extended HPF (HPF+) designed to do most of these examples
Data or geometric parallelism again but dynamic data structures which are not arrays
  • Need new runtime libraries (CHAOS and PCRC)
  • Need new data structures
  • Load-balancing "solved in principle" if we can find appropriate data structures and global operations
Northeast Parallel Architectures Center, Syracuse University, npac@npac.syr.edu

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