Basic HTML version of Foils prepared August 4 1996

Foil 28 Initial Thoughts II

From Summary of Working Groups at PAWS and PetaSoft Meetings PAWS(Mandalay Beach) and PetSoft(Bodega Bay) -- April 23 and June 17-19,96. by Geoffrey C. Fox


1 One needs distributed and shared memory constructs in the PEM
2 One should look at extending HPF directives to refer to memory hierarchy
3 It is interesting to look at adding directives to high level software systems such as those based on objects
4 One needs (performance) predictability in lowest level PEM
  • User control must be possible for any significant caches
  • Note that as one goes to higher layers in the software model, useability increases and predictability decreases
5 One needs layered software tools to match layered execution software
  • Performance Monitoring
  • Load Balancing -- this should be under user control -- I.e. in runtime and not O/S
  • Debugging
6 It is possible that support of existing software (teraApps) may not be emphasis

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