MPI_Rsend man page on RedHat

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MPI_Rsend(3)			      MPI			  MPI_Rsend(3)

NAME
       MPI_Rsend -  Blocking ready send

SYNOPSIS
       int MPI_Rsend(const void *buf, int count, MPI_Datatype datatype, int dest, int tag,
		     MPI_Comm comm)

INPUT PARAMETERS
       buf    - 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)

THREAD AND INTERRUPT SAFETY
       This  routine  is  thread-safe.	 This  means  that this routine may be
       safely used by multiple threads without the need for any	 user-provided
       thread  locks.  However, the routine is not interrupt safe.  Typically,
       this is due to the use of memory allocation routines such as malloc  or
       other  non-MPICH	 runtime  routines  that are themselves not interrupt-
       safe.

NOTES FOR FORTRAN
       All MPI routines in Fortran (except for MPI_WTIME and MPI_WTICK )  have
       an  additional  argument ierr at the end of the argument list.  ierr is
       an integer and has the same meaning as the return value of the  routine
       in  C.	In Fortran, MPI routines are subroutines, and are invoked with
       the call statement.

       All MPI objects (e.g., MPI_Datatype , MPI_Comm ) are of type INTEGER in
       Fortran.

ERRORS
       All  MPI	 routines  (except  MPI_Wtime  and MPI_Wtick ) return an error
       value; C routines as the value of the function and Fortran routines  in
       the last argument.  Before the value is returned, the current MPI error
       handler is called.  By default, this error handler aborts the MPI  job.
       The error handler may be changed with MPI_Comm_set_errhandler (for com‐
       municators),	MPI_File_set_errhandler	    (for      files),	   and
       MPI_Win_set_errhandler	(for   RMA   windows).	  The	MPI-1  routine
       MPI_Errhandler_set may be used but its use is deprecated.   The	prede‐
       fined error handler MPI_ERRORS_RETURN may be used to cause error values
       to be returned.	Note that MPI does not guarentee that an  MPI  program
       can  continue  past an error; however, MPI implementations will attempt
       to continue whenever possible.

       MPI_SUCCESS
	      - No error; MPI routine completed successfully.
       MPI_ERR_COMM
	      - Invalid communicator.  A common error is to use a null	commu‐
	      nicator in a call (not even allowed in MPI_Comm_rank ).
       MPI_ERR_COUNT
	      - Invalid count argument.	 Count arguments must be non-negative;
	      a count of zero is often valid.
       MPI_ERR_TYPE
	      - Invalid datatype argument.  May be an uncommitted MPI_Datatype
	      (see MPI_Type_commit ).
       MPI_ERR_TAG
	      -	 Invalid  tag  argument.  Tags must be non-negative; tags in a
	      receive ( MPI_Recv , MPI_Irecv , MPI_Sendrecv , etc.)  may  also
	      be MPI_ANY_TAG .	The largest tag value is available through the
	      the attribute MPI_TAG_UB .

       MPI_ERR_RANK
	      - Invalid source or destination rank.   Ranks  must  be  between
	      zero  and	 the  size  of	the communicator minus one; ranks in a
	      receive ( MPI_Recv , MPI_Irecv , MPI_Sendrecv , etc.)  may  also
	      be MPI_ANY_SOURCE .

LOCATION
       src/mpi/pt2pt/rsend.c

				   8/22/2013			  MPI_Rsend(3)
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