MPI_Send − Performs a standard-mode blocking send.
#include
<mpi.h>
int MPI_Send(const void *buf, int count,
MPI_Datatype datatype, int dest,
int tag, MPI_Comm comm) |
USE MPI
! or the older form: INCLUDE ’mpif.h’
MPI_SEND(BUF, COUNT, DATATYPE, DEST, TAG, COMM,
IERROR)
<type> |
BUF(*) | |||
INTEGER |
COUNT, DATATYPE, DEST, TAG, COMM, IERROR |
USE mpi_f08
MPI_Send(buf, count, datatype,
dest, tag, comm, ierror)
TYPE(*), DIMENSION(..), INTENT(IN) :: buf | |
INTEGER, INTENT(IN) :: count, dest, tag | |
TYPE(MPI_Datatype), INTENT(IN) :: datatype | |
TYPE(MPI_Comm), INTENT(IN) :: comm | |
INTEGER, OPTIONAL, INTENT(OUT) :: ierror |
buf |
Initial address of send buffer (choice). |
|||
count |
Number of elements send (nonnegative integer). |
|||
datatype |
Datatype of each send buffer element (handle). |
|||
dest |
Rank of destination (integer). |
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tag |
Message tag (integer). |
|||
comm |
Communicator (handle). |
IERROR |
Fortran only: Error status (integer). |
MPI_Send performs a standard-mode, blocking send.
This routine will block until the message is sent to the destination. For an in-depth explanation of the semantics of the standard-mode send, refer to the MPI-1 Standard.
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.
MPI_Isend
MPI_Bsend
MPI_Recv