Basic HTML version of Foils prepared August 7 98

Foil 30 Hints for Using
Data Parallel Statements

From DoD HPF Training -- 3. Parallel Constructs in HPF DoD Training and Others -- 1995-98. by Chuck Koelbel -- Rice University
1 Use FORALL to extend array operations
  • More shapes
  • User-defined elemental functions
  • Better than array syntax?
2 Beware of hidden overheads
  • Intra-statement overheads
  • Inter-statement synchronizations
  • Complex pure functions
3 Assert INDEPENDENT only when it is true
  • This has implications for debuggers and programming environments!
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