MPI_File_get_group(3) Open MPI MPI_File_get_group(3)
NAME
MPI_File_get_group - Returns a duplicate of the process group of a
file.
SYNTAX
C Syntax
#include <mpi.h>
int MPI_File_get_group(MPI_File fh, MPI_Group *group)
Fortran Syntax
USE MPI
! or the older form: INCLUDE 'mpif.h'
MPI_FILE_GET_GROUP(FH, GROUP, IERROR)
INTEGER FH, GROUP, IERROR
Fortran 2008 Syntax
USE mpi_f08
MPI_File_get_group(fh, group, ierror)
TYPE(MPI_File), INTENT(IN) :: fh
TYPE(MPI_Group), INTENT(OUT) :: group
INTEGER, OPTIONAL, INTENT(OUT) :: ierror
C++ Syntax
#include <mpi.h>
MPI::Group MPI::File::Get_group() const
INPUT PARAMETER
fh File handle (handle).
OUTPUT PARAMETERS
group Group that opened the file (handle).
IERROR Fortran only: Error status (integer).
DESCRIPTION
MPI_File_get_group returns a duplicate of the group of the communicator
used to open the file associated with fh. The group is returned in
group. The user is responsible for freeing group, using
MPI_Group_free.
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. For MPI I/O function errors, the default error handler is set
to MPI_ERRORS_RETURN. The error handler may be changed with
MPI_File_set_errhandler; the predefined error handler MPI_ER-
RORS_ARE_FATAL may be used to make I/O errors fatal. Note that MPI does
not guarantee that an MPI program can continue past an error.
4.1.2 Nov 24, 2021 MPI_File_get_group(3)
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