mpi_accumulate(3) [debian man page]

MPI_Accumulate(3)							MPI							 MPI_Accumulate(3)

NAME

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

SYNOPSIS

       int MPI_Accumulate(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 buffer (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_PRE-
       CISION ).

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  communicators),  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 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 whenever possible.

       MPI_SUCCESS
	      - No error; MPI routine completed successfully.
       MPI_ERR_ARG
	      - Invalid argument.  Some argument is invalid and is not identified 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 receive (
	      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

       accumulate.c

								     11/6/2010							 MPI_Accumulate(3)

Check Out this Related Man Page

MPI_Type_lb(3)								MPI							    MPI_Type_lb(3)

NAME

       MPI_Type_lb -  Returns the lower-bound of a datatype

SYNOPSIS

       int MPI_Type_lb(MPI_Datatype datatype, MPI_Aint *displacement)

INPUT PARAMETERS

       datatype
	      - datatype (handle)

OUTPUT PARAMETER

       displacement
	      - displacement of lower bound from origin, in bytes (address integer)

DEPRECATED FUNCTION

       The  MPI-2  standard  deprecated a number of routines because MPI-2 provides better versions.  This routine is one of those that was depre-
       cated.  The routine may continue to be used, but new code should use  the  replacement  routine.   The  replacement  for  this  routine	is
       MPI_Type_Get_extent .

THREAD AND INTERRUPT SAFETY

       This  routine  is  both	thread- and interrupt-safe.  This means that this routine may safely be used by multiple threads and from within a
       signal handler.

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  communicators),  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 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 whenever possible.

       MPI_SUCCESS
	      - No error; MPI routine completed successfully.
       MPI_ERR_TYPE
	      - Invalid datatype argument.  May be an uncommitted MPI_Datatype (see MPI_Type_commit ).
       MPI_ERR_ARG
	      - Invalid argument.  Some argument is invalid and is not identified by a specific error class (e.g., MPI_ERR_RANK ).

LOCATION

       type_lb.c

								     8/6/2010							    MPI_Type_lb(3)

Linux and UNIX Man Pages

mpi_accumulate(3) [debian man page]

Check Out this Related Man Page