NAME¶

MPI_Rsend_init - Builds a handle for a ready send.

SYNTAX¶

C Syntax¶

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

Fortran Syntax¶

INCLUDE 'mpif.h'
MPI_RSEND_INIT( BUF, COUNT, DATATYPE, DEST, TAG, COMM, REQUEST,
		IERROR)
	<type>	 BUF(*)
	INTEGER	 COUNT, DATATYPE, DEST, TAG, COMM, REQUEST, IERROR 

C++ Syntax¶

#include <mpi.h>
Prequest Comm::Rsend_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 sent (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 object for a ready 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.

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_Send_init MPI_Sssend_init MPI_Recv_init MPI_Start MPI_Startall MPI_Request_free