Basic HTML version of Foils prepared 19 September 98

Foil 65 Simple Example of Derived Datatype

From MPI Message Passing Interface Computational Science for Simulations -- Fall Semester 1998. by Geoffrey C. Fox, Nancy McCracken
integer derivedtype, ...
call MPI_TYPE_CONTIGUOUS(10, MPI_REAL, derivedtype, ierr)
call MPI_TYPE_COMMIT(derivedtype, ierr)
call MPI_SEND(data, 1, derivedtype, dest, tag, MPI_COMM_WORLD, ierr)
call MPI_TYPE_FREE(derivedtype, ierr)
is equivalent to simpler single call
call MPI_SEND(data, 10, MPI_REAL, dest, tag, MPI_COMM_WORLD, ierr)
and each sends 10 contiguous real values at location data to process dest

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