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MPI_Accumulate(3)		      MPI		     MPI_Accumulate(3)

NAME
       MPI_Accumulate  -  Accumulate data into the target process using	remote
       memory access

SYNOPSIS
       int MPI_Accumulate(MPICH2_CONST void *origin_addr, int origin_count, MPI_Datatype
			  origin_datatype, int target_rank, MPI_Aint
			  target_disp, int target_count, MPI_Datatype
			  target_datatype, MPI_Op op, MPI_Win win)

INPUT PARAMETERS
       origin_addr
	      -	initial	address	of buffer (choice)
       origin_count
	      -	number of entries in buffer (nonnegative integer)
       origin_datatype
	      -	datatype of each buffer	entry (handle)
       target_rank
	      -	rank of	target (nonnegative integer)
       target_disp
	      -	displacement from start	of window to beginning of target  buf-
	      fer (nonnegative integer)
       target_count
	      -	number of entries in target buffer (nonnegative	integer)
       target_datatype
	      -	datatype of each entry in target buffer	(handle)
       op     -	predefined reduce operation (handle)
       win    -	window object (handle)

NOTES
       The basic components of both the	origin and target datatype must	be the
       same predefined datatype	(e.g., all MPI_INT or all MPI_DOUBLE_PRECISION
       ).

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_er-
       rhandler	(for RMA windows).  The	MPI-1 routine  MPI_Errhandler_set  may
       be  used	 but  its  use	is  deprecated.	  The predefined 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	 when-
       ever possible.

       MPI_SUCCESS
	      -	No error; MPI routine completed	successfully.
       MPI_ERR_ARG
	      -	Invalid	argument.  Some	argument is invalid and	is not identi-
	      fied by a	specific error class (e.g., MPI_ERR_RANK ).
       MPI_ERR_COUNT
	      -	Invalid	count argument.	 Count arguments must be non-negative;
	      a	count of zero is often valid.
       MPI_ERR_RANK
	      -	 Invalid  source  or  destination rank.	 Ranks must be between
	      zero and the size	of the communicator minus one; ranks in	a  re-
	      ceive  ( MPI_Recv	, MPI_Irecv , MPI_Sendrecv , etc.) may also be
	      MPI_ANY_SOURCE .

       MPI_ERR_TYPE
	      -	Invalid	datatype argument.  May	be an uncommitted MPI_Datatype
	      (see MPI_Type_commit ).
       MPI_ERR_WIN
	      -	Invalid	MPI window object

LOCATION
       src/mpi/rma/accumulate.c

				   9/20/2012		     MPI_Accumulate(3)

NAME | SYNOPSIS | INPUT PARAMETERS | NOTES | NOTES FOR FORTRAN | ERRORS | LOCATION

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