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MPI_Win_get_info(3) MPI MPI_Win_get_info(3)
MPI_Win_get_info - Returns a new info object containing the hints of
the window associated with win.
int MPI_Win_get_info(MPI_Win win, MPI_Info *info_used)
The current setting of all hints actually used by the system related to
this window is returned in info_used. If no such hints exist, a handle
to a newly created info object is returned that contains no key/value
pair. The user is responsible for freeing info_used via MPI_Info_free .
win - window object (handle)
- new info argument (handle)
The info object returned in info_used will contain all hints currently
active for this window. This set of hints may be greater or smaller
than the set of hints specified when the window was created, as the
system may not recognize some hints set by the user, and may recognize
other hints that the user has not set.
THREAD AND INTERRUPT SAFETY
This routine is thread-safe. This means that this routine may be
safely used by multiple threads without the need for any user-provided
thread locks. However, the routine is not interrupt safe. Typically,
this is due to the use of memory allocation routines such as malloc or
other non-MPICH runtime routines that are themselves not interrupt-
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
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.
- No error; MPI routine completed successfully.
- Invalid argument. Some argument is invalid and is not
identified by a specific error class (e.g., MPI_ERR_RANK ).
- Invalid MPI window object
- Invalid Info
- Other error; use MPI_Error_string to get more information
about this error code.