MPI_Rsend - Online Linux Manual PageSection : 3
Updated : Jan 21, 2016
Source : 1.10.2
Note : Open MPI
NAMEMPI_Rsend − Ready send.
SYNTAX
C Syntax#include <mpi.h>
int MPI_Rsend(const void *buf, int count, MPI_Datatype datatype, int dest,
int tag, MPI_Comm comm)
Fortran SyntaxINCLUDE 'mpif.h'
MPI_RSEND(BUF, COUNT, DATATYPE, DEST, TAG, COMM, IERROR)
<type> BUF(*)
INTEGER COUNT, DATATYPE, DEST, TAG, COMM, IERROR
C++ Syntax#include <mpi.h>
void Comm::Rsend(const void* buf, int count, const Datatype&
datatype, int dest, int tag) const
INPUT PARAMETERSbuf Initial address of send buffer (choice). count Number of elements in send buffer (nonnegative integer). datatype Datatype of each send buffer element (handle). dest Rank of destination (integer). tag Message tag (integer). comm Communicator (handle).
OUTPUT PARAMETERIERROR Fortran only: Error status (integer).
DESCRIPTIONA ready send may only be called if the user can guarantee that a receive is already posted. It is an error if the receive is not posted before the ready send is called.
ERRORSAlmost 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. 0
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