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MPI_Group_compare
Langue: en
Version: Mar 18, 2009 (fedora - 05/07/09)
Section: 3 (Bibliothèques de fonctions)
Sommaire
NAME
MPI_Group_compare - Compares two groups.SYNTAX
C Syntax
#include <mpi.h> int MPI_Group_compare(MPI_Group group1, MPI_Group group2, int *result)
Fortran Syntax
INCLUDE 'mpif.h' MPI_GROUP_COMPARE(GROUP1, GROUP2, RESULT, IERROR) INTEGER GROUP1, GROUP2, RESULT, IERROR
C++ Syntax
#include <mpi.h> static int Group::Compare(const Group& group1, const Group& group2)
INPUT PARAMETERS
- group1
- First group (handle).
- group2
- Second group (handle).
OUTPUT PARAMETERS
- result
- Integer which is MPI_IDENT if the order and members of the two groups are the same, MPI_SIMILAR if only the members are the same, and MPI_UNEQUAL otherwise.
- IERROR
- Fortran only: Error status (integer).
DESCRIPTION
MPI_IDENT results if the group members and group order is exactly the same in both groups. This happens for instance if group1 and group2 are the same handle. MPI_SIMILAR results if the group members are the same but the order is different. MPI_UNEQUAL results otherwise.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.
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