MPI_SEND, MPI_Send

Purpose

Performs a blocking standard mode send operation.

C synopsis

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

C++ synopsis

#include mpi.h
void MPI::Comm::Send(const void* buf, int count, const MPI::Datatype& datatype,
                     int dest, int tag) const;

FORTRAN synopsis

include 'mpif.h' or use mpi
MPI_SEND(CHOICE BUF,INTEGER COUNT,INTEGER DATATYPE,INTEGER DEST,
      INTEGER TAG,INTEGER COMM,INTEGER IERROR)

Description

This subroutine is a blocking standard mode send operation. MPI_SEND causes
count elements of type datatype to be sent from buf to the task specified
by dest. dest is a task rank that can be any value from 0 to (n-1), where n
is the number of tasks in comm.

Parameters

buf
     is the initial address of the send buffer (choice) (IN)
count
     is the number of elements in the send buffer (non-negative integer)
     (IN)
datatype
     is the datatype of each send buffer element (handle) (IN)
dest
     is the rank of the destination task in comm(integer) (IN)
tag
     is the message tag (positive integer) (IN)
comm
     is the communicator (handle) (IN)
IERROR
     is the FORTRAN return code. It is always the last argument.

Errors

Invalid count
     count < 0

Invalid datatype

Type not committed

Invalid destination
     dest < 0 or dest > = groupsize

Invalid tag
     tag < 0

Invalid comm

MPI not initialized

MPI already finalized

Related information

     MPI_BSEND
     MPI_ISEND
     MPI_RSEND
     MPI_SENDRECV
     MPI_SSEND