All MPI Programs Contain

• #include “mpi.h”

  • definitions and declarations necessary for an MPI program

• MPI_Init(&argc, &argv);

  • allows MPI to do any needed setup
  • not necessarily first call but highly recommended
  • must be called before and other MPI routine

• MPI_Finalize();

  • allows MPI to clean up
  • not necessarily last call but highly recommended

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