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MPI_Group_range_excl(3OpenMPI)                                                MPI_Group_range_excl(3OpenMPI)



NAME
       MPI_Group_range_excl - Produces a group by excluding ranges of processes from an existing group.


SYNTAX
C Syntax
       #include <mpi.h>
       int MPI_Group_range_excl(MPI_Group group, int n, int ranges[][3],
            MPI_Group *newgroup)


Fortran Syntax
       INCLUDE 'mpif.h'
       MPI_GROUP_RANGE_EXCL(GROUP, N, RANGES, NEWGROUP, IERROR)
            INTEGER   GROUP, N, RANGES(3,*), NEWGROUP, IERROR


C++ Syntax
       #include <mpi.h>
       Group Group::Range_excl(int n, const int ranges[][3]) const


INPUT PARAMETERS
       group     Group (handle).

       n         Number of triplets in array ranges (integer).

       ranges    A  one-dimensional  array  of integer triplets of the form (first rank, last rank, stride),
                 indicating the ranks in group of processes to be excluded from the output group newgroup.


OUTPUT PARAMETERS
       newgroup  New group derived from above, preserving the order in group (handle).

       IERROR    Fortran only: Error status (integer).


DESCRIPTION
       Each computed rank must be a valid rank in group and all computed ranks must be distinct, or else the
       program is erroneous.

       The  functionality  of this routine is specified to be equivalent to expanding the array of ranges to
       an array of the excluded ranks and passing the resulting  array  of  ranks  and  other  arguments  to
       MPI_Group_excl.  A  call  to MPI_Group_excl is equivalent to a call to MPI_Group_range_excl with each
       rank i in ranks replaced by the triplet (i,i,1) in the argument ranges.


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. 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.


SEE ALSO
       MPI_Group_excl
       MPI_Group_free




Open MPI 1.2                                   September 2006                 MPI_Group_range_excl(3OpenMPI)