/*D
   MPI_Psend_init - Creates a partitioned communication send request

Synopsis:
.vb
int MPI_Psend_init(const void *buf, int partitions, MPI_Count count,
                   MPI_Datatype datatype, int dest, int tag, MPI_Comm comm,
                   MPI_Info info, MPI_Request *request)
.ve

Input Parameters:
+ buf - initial address of send buffer (choice)
. partitions - number of partitions (non-negative integer)
. count - number of elements send per partition (non-negative integer)
. datatype - type of each element (handle)
. dest - rank of destination (integer)
. tag - message tag (integer)
. comm - communicator (handle)
- info - info argument (handle)

Output Parameters:
. request - communication request (handle)

.N ThreadSafe

.N Fortran

.N Errors
.N MPI_SUCCESS
.N MPI_ERR_ARG
.N MPI_ERR_BUFFER
.N MPI_ERR_COMM
.N MPI_ERR_COUNT
.N MPI_ERR_INFO
.N MPI_ERR_RANK
.N MPI_ERR_TAG
.N MPI_ERR_TYPE
.N MPI_ERR_OTHER

.seealso: MPI_Pready, MPI_Pready_range, MPI_Pready_list, MPI_Start, MPI_Startall, MPI_Request_free
D*/

