MPI_Sendrecv function - Message Passing Interface (original) (raw)

Sends and receives a message.

Syntax

int MPIAPI MPI_Sendrecv(
  _In_  void         *sendbuf,
        int          sendcount,
        MPI_Datatype sendtype,
        int          dest,
        int          sendtag,
  _Out_ void         *recvbuf,
        int          recvcount,
        MPI_Datatype recvtype,
        int          source,
        int          recvtag,
        MPI_Comm     comm,
  _Out_ MPI_Status   *status
);

Parameters

• sendbuf [in]
  Initial address of send buffer.
• sendcount
  Number of elements in send buffer.
• sendtype
  Type of elements in send buffer.
• dest
  Rank of destination.
• sendtag
  Send tag.
• recvbuf [out]
  Initial address of receive buffer.
• recvcount
  Number of elements in receive buffer.
• recvtype
  Type of elements in receive buffer.
• source
  Rank of source.
• recvtag
  Receive tag.
• comm
  Communicator.
• status [out]
  Status object that refers to the receive operation.

Return value

Returns MPI_SUCCESS on success. Otherwise, the return value is an error code.

In Fortran, the return value is stored in the IERROR parameter.

Fortran

    MPI_SENDRECV(SENDBUF, SENDCOUNT, SENDTYPE, DEST, SENDTAG, RECVBUF,
            RECVCOUNT, RECVTYPE, SOURCE, RECVTAG, COMM, STATUS, IERROR)
        <type> SENDBUF(*), RECVBUF(*)
        INTEGER SENDCOUNT, SENDTYPE, DEST, SENDTAG, RECVCOUNT, RECVTYPE,
        SOURCE, RECVTAG, COMM, STATUS(MPI_STATUS_SIZE), IERROR

Requirements

See also

MPI Point to Point Functions