MPI Send/Receive
MPI_Send (buf, count, datatype, dest, tag, comm)
- void *buf (address of send buffer)
- int count (number of elements in send buffer)
- int dest (destination of receiving PE)
- int tag (message tag)
- MPI_Datatype (datatype of each send element)
- MPI_Comm (handle of a communicator - a communicator is a group of PEs - two predetermined groups are MPI_COMM_WORLD and MPI_COMM_SELF).