2.3 KiB
Name
MPI_Bsend_init - Builds a handle for a buffered send.
Syntax
C Syntax
#include <mpi.h>
int MPI_Bsend_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_BSEND_INIT(BUF, COUNT, DATATYPE, DEST, TAG, COMM, REQUEST, IERROR)
<type> BUF(*)
INTEGER COUNT, DATATYPE, DEST, TAG,
INTEGER COMM, REQUEST, IERROR
Fortran 2008 Syntax
USE mpi_f08
MPI_Bsend_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
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 request for a buffered mode send, 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.
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_Send_init(3) MPI_Ssend_init(3) MPI_Rsend_init(3) MPI_Recv_init(3) MPI_Start(3) MPI_Startall(3)