Scripted HTML version of Foils prepared 11 November 1996

Foil 5 Some Key Features of MPI

From CPS615-Initial Lecture on MPI ending with discussion of basic MPI_SEND Delivered Lectures of CPS615 Basic Simulation Track for Computational Science -- 31 October 96. by Geoffrey C. Fox *
Secs 185.7
Point to Point Message Passing
Collective Communication -- messages between >2 simultaneous processes
Support for Process Groups -- messaging in subsets of processors
Support for communication contexts -- general specification of message labels and ensuring unique to a set of routines as in a precompiled library
  • Note a communicator incorporates contexts and groups as single data structure and defines the scope of communication operation
Support for application (virtual) topologies analogous to distribution types in HPF
Inquiry routines to find out about environment such as number of processors

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