MPI_Win_get_attr − Obtains the value of a window attribute.
#include
<mpi.h>
int MPI_Win_get_attr(MPI_Win win, int
win_keyval,
void *attribute_val, int *flag) |
USE MPI
! or the older form: 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 |
USE mpi_f08
MPI_Win_get_attr(win, win_keyval,
attribute_val, flag, ierror)
TYPE(MPI_Win), INTENT(IN) :: win | |
INTEGER, INTENT(IN) :: win_keyval | |
INTEGER(KIND=MPI_ADDRESS_KIND), INTENT(OUT) :: attribute_val | |
LOGICAL, INTENT(OUT) :: flag | |
INTEGER, OPTIONAL, INTENT(OUT) :: ierror |
win |
Window to which the attribute is attached (handle). |
win_keyval
Key value (integer).
attribute_val
Attribute value, unless ag = false
flag |
False if no attribute is associated with the key (logical). |
|||
IERROR |
Fortran only: Error status (integer). |
Obtains the value of a window attribute.
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.
Almost all MPI routines return an error value; C routines as the value of the function and Fortran routines in the last argument. C++ functions 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.