PetscObjectComm#

Gets the MPI communicator for any PetscObject regardless of the type.

Synopsis#

#include "petscsys.h"    
MPI_Comm PetscObjectComm(PetscObject obj)

Not Collective, No Fortran Support

obj - any PETSc object, for example a Vec, Mat or KSP. It must be cast with a (PetscObject), for example, PetscObjectComm((PetscObject)mat,…);

Returns the MPI communicator or MPI_COMM_NULL if obj is not valid.

This is one of the rare PETSc routines that does not return an error code. Use PetscObjectGetComm() when appropriate for error handling.

advanced