NAME

       MPI_Send_init - Builds a handle for a standard send.

SYNTAX

C Syntax

       #include <mpi.h>
       int MPI_Send_init(const void *buf, int count, MPI_Datatype datatype,
            int dest, int tag, MPI_Comm comm, MPI_Request *request)

Fortran Syntax

       USE MPI
       ! or the older form: INCLUDE 'mpif.h'
       MPI_SEND_INIT(BUF, COUNT, DATATYPE, DEST, TAG, COMM, REQUEST,
                 IERROR)
            <type>    BUF(*)
            INTEGER   REQUEST, COUNT, DATATYPE, DEST, TAG
            INTEGER   COMM, REQUEST, IERROR

Fortran 2008 Syntax

       USE mpi_f08
       MPI_Send_init(buf, count, datatype, dest, tag, comm, request, ierror)
            TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: buf
            INTEGER, INTENT(IN) :: count, dest, tag
            TYPE(MPI_Datatype), INTENT(IN) :: datatype
            TYPE(MPI_Comm), INTENT(IN) :: comm
            TYPE(MPI_Request), INTENT(OUT) :: request
            INTEGER, OPTIONAL, INTENT(OUT) :: ierror

C++ Syntax

       #include <mpi.h>
       Prequest Comm::Send_init(const void* buf, int count, const
            Datatype& datatype, int dest, int tag) const

INPUT PARAMETERS

       buf       Initial address of send buffer (choice).

       count     Number of elements to send (integer).

       datatype  Type of each element (handle).

       dest      Rank of destination (integer).

       tag       Message tag (integer).

       comm      Communicator (handle).

OUTPUT PARAMETERS

       request   Communication request (handle).

       IERROR    Fortran only: Error status (integer).

DESCRIPTION

       Creates  a  persistent  communication request for a standard mode send operation, and binds to it all the
       arguments of a send operation.

       A communication (send or receive) that uses a persistent request is initiated by the  function  MPI_Start
       or MPI_Startall.

ERRORS

       Almost  all  MPI  routines  return  an  error  value; C routines as the value of the function and Fortran
       routines in the last argument. C++ functions do not return errors. If the default error handler is set to
       MPI::ERRORS_THROW_EXCEPTIONS, then on error the  C++  exception  mechanism  will  be  used  to  throw  an
       MPI::Exception object.

       Before  the  error  value  is  returned,  the current MPI error handler is called. By default, this error
       handler aborts the MPI job, except for I/O function  errors.  The  error  handler  may  be  changed  with
       MPI_Comm_set_errhandler; the predefined error handler MPI_ERRORS_RETURN may be used to cause error values
       to be returned. Note that MPI does not guarantee that an MPI program can continue past an error.

SEE ALSO

       MPI_Bsend_init
       MPI_Ssend_init
       MPI_Rsend_init
       MPI_Recv_init
       MPI_Start
       MPI_Startall
       MPI_Request_free

4.1.6                                             Sep 30, 2023                                  MPI_Send_init(3)