Basic HTML version of Foils prepared August 29 98

Foil 17 What Happened?

From Designing and Building Parallel Programs 3: MPI Message Passing System DoD Modernization Tutorial -- 1995-1998. by Ian Foster, Gina Goff, Ehtesham Hayder, Chuck Koelbel
1 Each library was self-consistent
  • Correctly handled all messages it knew about
2 Interaction between the libraries killed them
  • "Intercepting" a message broke both
3 The lesson:
  • Don't take messages from strangers
4 Other examples teach other lessons:
  • Clean up your own messages
  • Don't use other libraries' tags
  • Etc. ...
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