I Message body Think of the buffer as an array; the dimension is given by count, and the type of the array elements is given by datatype ■■檵■■■誾」 (count=7) An MPl message is an array of elements of a particular MPI datatype Using datatypes and counts, rather than bytes and bytecounts, allows structured data and noncontiguous data to be handled smoothlyMessage body • Think of the buffer as an array; the dimension is given by count, and the type of the array elements is given by datatype. • Using datatypes and counts, rather than bytes and bytecounts, allows structured data and noncontiguous data to be handled smoothly. An MPI message is an array of elements of a particular MPI datatype. (count=7)