17.2.435.1.1. C Syntax
#include <mpi.h> MPI_Win_attach(MPI_Win win, void *base, MPI_Aint size) MPI_Win_detach(MPI_Win win, void *base)
17.2.435.1.2. Fortran Syntax
USE MPI ! or the older form: INCLUDE 'mpif.h' MPI_WIN_ATTACH(WIN, BASE, SIZE, IERROR) <type> BASE(*) INTEGER(KIND=MPI_ADDRESS_KIND) SIZE INTEGER WIN, IERROR MPI_WIN_DETACH(WIN, BASE, IERROR) <type> BASE(*) INTEGER WIN, IERROR
17.2.435.1.3. Fortran 2008 Syntax
USE mpi_f08 MPI_Win_attach(win, base, size, ierror) TYPE(MPI_Win), INTENT(IN) :: win TYPE(*), DIMENSION(..), INTENT(IN) :: base INTEGER(KIND=MPI_ADDRESS_KIND), INTENT(IN) :: size INTEGER, OPTIONAL, INTENT(OUT) :: ierror MPI_Win_detach(win, base, ierror) TYPE(MPI_Win), INTENT(IN) :: win TYPE(*), DIMENSION(..), INTENT(IN) :: base INTEGER, OPTIONAL, INTENT(OUT) :: ierror
17.2.435.2. INPUT PARAMETERS
win: A window that was created with MPI_Win_create_dynamic
base: Initial address of window (choice).
size: Size of window in bytes (nonnegative integer).
17.2.435.3. OUTPUT PARAMETERS
win: Window object returned by the call (handle).
IERROR: Fortran only: Error status (integer).
MPI_Win_attach is a one-sided MPI communication call used to attach a memory region of size bytes starting at address base to a window for RMA access. The window win must have been created using MPI_Win_create_dynamic. Multiple non-overlapping memory regions may be attached to the same dynamic window. Attaching overlapping memory regions to the same dynamic window is erroneous.
Use memory allocated by MPI_Alloc_mem to guarantee properly aligned window boundaries (such as word, double-word, cache line, page frame, and so on).
Almost all MPI routines return an error value; C routines as the value of the function and Fortran routines in the last argument.
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.