Basic HTML version of Foils prepared August 29 98

Foil 11 To Whom It Gets Sent: Process Identifiers

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
1st generation message passing systems used hardware addresses
  • Was inflexible
    • Had to recode on moving to a new machine
  • Was inconvenient
    • Required programmer to map problem topology onto machine connections
  • Was insufficient
    • Didn't support operations over a submachine (e.g., sum across a row of processes)

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