Basic HTML version of Foils prepared July 14 97

Foil 84 Event Broadcasting: con and pro

From Web Technology as the basis of Portable High Quality HPCN Software Review Meeting of PSPTA Group Manchester UK, Garland Texas(E-systems), Winnipeg Canada(HPCS'97) -- July 1,9,12 97. by Geoffrey C. Fox


Sharing possible only if applications deterministic
  • applications ARE deterministic or can be made so
Copies of applications must be present everywhere
  • but they are, being applets or downloaded via a push channel
Environments must be identical
  • Java VM takes care about this
Initial state of a newcomer impossible to define
  • not so for good OO design and object serialization mechanism
Cannot maintain consistency among copies
  • Difficult but not Impossible. Variety of sync mechanisms available
The pros win! Web model enables event broadcasting!



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