mpi_alloc_mem(3openmpi) [osx man page]

MPI_Alloc_mem(3OpenMPI) 												   MPI_Alloc_mem(3OpenMPI)

NAME

       MPI_Alloc_mem  - Allocates a specified memory segment.

SYNTAX

C Syntax
       #include <mpi.h>
       int MPI_Alloc_mem(MPI_Aint size, MPI_Info info, void *baseptr)

Fortran Syntax (see FORTRAN NOTES)
       INCLUDE 'mpif.h'
       MPI_ALLOC_MEM(SIZE, INFO, BASEPTR, IERROR)
	    INTEGER INFO, IERROR
	    INTEGER(KIND=MPI_ADDRESS_KIND) SIZE, BASEPTR

C++ Syntax
       #include <mpi.h>
       void* MPI::Alloc_mem(MPI::Aint size, const MPI::Info& info)

INPUT PARAMETERS

       size	 Size of memory segment in bytes (nonnegative integer).

       info	 Info argument (handle).

OUTPUT PARAMETERS

       baseptr	 Pointer to beginning of memory segment allocated.

       IERROR	 Fortran only: Error status (integer).

DESCRIPTION

       MPI_Alloc_mem allocates size bytes of memory. The starting address of this memory is returned in the variable base.

FORTRAN NOTES

       There  is  no  portable	FORTRAN  77  syntax for using MPI_Alloc_mem.  There is no portable Fortran syntax for using pointers returned from
       MPI_Alloc_mem. However, MPI_Alloc_mem can be used with Sun Fortran compilers.

       From FORTRAN 77, you can use the following non-standard declarations for the SIZE and BASEPTR arguments:
		  INCLUDE "mpif.h"
		  INTEGER*MPI_ADDRESS_KIND SIZE, BASEPTR

       From either FORTRAN 77 or Fortran 90, you can use "Cray pointers" for the BASEPTR argument. Cray pointers are described further in the For-
       tran User's Guide and are supported by many Fortran compilers.  For example,

		  INCLUDE "mpif.h"
		  REAL*4 A(100,100)
		  POINTER (BASEPTR, A)
		  INTEGER*MPI_ADDRESS_KIND SIZE

		  SIZE = 4 * 100 * 100
		  CALL MPI_ALLOC_MEM(SIZE,MPI_INFO_NULL,BASEPTR,IERR)

		  ! use A

		  CALL MPI_FREE_MEM(A, IERR)

ERRORS

       Almost all MPI routines return an error value; C routines as the value of the function and Fortran routines in the last argument. C++ func-
       tions do not return errors. If the default error handler is set to MPI::ERRORS_THROW_EXCEPTIONS, then on error the C++ exception  mechanism
       will be used to throw an MPI:Exception object.

       Before  the error value is returned, the current MPI error handler is called. By default, this error handler aborts the MPI job, except for
       I/O function errors. The error handler may be changed with MPI_Comm_set_errhandler; the predefined error handler MPI_ERRORS_RETURN  may	be
       used to cause error values to be returned. Note that MPI does not guarantee that an MPI program can continue past an error.

SEE ALSO

       MPI_Free_mem

Open MPI 1.2							  September 2006					   MPI_Alloc_mem(3OpenMPI)

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MPI_Win_get_attr(3OpenMPI)												MPI_Win_get_attr(3OpenMPI)

NAME

       MPI_Win_get_attr - Obtains the value of a window attribute.

SYNTAX

C Syntax
       #include <mpi.h>
       int MPI_Win_get_attr(MPI_Win win, int win_keyval,
	    void *attribute_val, int *flag)

Fortran Syntax (see FORTRAN 77 NOTES)
       INCLUDE 'mpif.h'
       MPI_WIN_GET_ATTR(WIN, WIN_KEYVAL, ATTRIBUTE_VAL, FLAG, IERROR)
	    INTEGER WIN, WIN_KEYVAL, IERROR
	    INTEGER(KIND=MPI_ADDRESS_KIND) ATTRIBUTE_VAL
	    LOGICAL FLAG

C++ Syntax
       #include <mpi.h>
       bool MPI::Win::Get_attr(int win_keyval, void* attribute_val) const

INPUT PARAMETERS

       win	 Window to which the attribute is attached (handle).

       win_keyval
		 Key value (integer).

OUTPUT PARAMETERS

       attribute_val
		 Attribute value, unless ag = false

       flag	 False if no attribute is associated with the key (logical).

       IERROR	 Fortran only: Error status (integer).

DESCRIPTION

       Obtains the value of a window attribute.

FORTRAN 77 NOTES
       The  MPI  standard prescribes portable Fortran syntax for the ATTRIBUTE_VAL argument only for Fortran 90. FORTRAN 77 users may use the non-
       portable syntax

	    INTEGER*MPI_ADDRESS_KIND ATTRIBUTE_VAL

       where MPI_ADDRESS_KIND is a constant defined in mpif.h and gives the length of the declared integer in bytes.

ERRORS

       Almost all MPI routines return an error value; C routines as the value of the function and Fortran routines in the last argument. C++ func-
       tions  do not return errors. If the default error handler is set to MPI::ERRORS_THROW_EXCEPTIONS, then on error the C++ exception mechanism
       will be used to throw an MPI:Exception object.

       Before the error value is returned, the current MPI error handler is called. By default, this error handler aborts the MPI job, except  for
       I/O  function  errors. The error handler may be changed with MPI_Comm_set_errhandler; the predefined error handler MPI_ERRORS_RETURN may be
       used to cause error values to be returned. Note that MPI does not guarantee that an MPI program can continue past an error.

Open MPI 1.2							  September 2006					MPI_Win_get_attr(3OpenMPI)

Linux and UNIX Man Pages

mpi_alloc_mem(3openmpi) [osx man page]

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