Three Systems Compared

• HPF

  • Good abstraction: data parallelism
  • System can hide many details from programmer
    • Two-edged sword
  • Well-suited for regular problems on machines with locality

• MPI

  • Lower-level abstraction: message passing
  • System works everywhere, is usually the first tool available on new systems
  • Well-suited to handling data on distributed memory machines, but requires work up front

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