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¶

    INCLUDE 'mpif.h'
    MPI_FILE_GET_GROUP( FH, GROUP,  IERROR)
        	 INTEGER	  FH, GROUP, 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++ 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. 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_ERRORS_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.