Basic HTML version of Foils prepared August 29 98

Foil 18 Solution to the Tag Problem

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 A separate communication context for each family of messages
  • Used for queueing and matching
  • This is the context for communicators
2 No wild cards allowed, for security
3 Allocated by the system, for security
4 Tags retained for use within a context
  • wild cards OK for tags
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