PetscBarrier

Blocks until this routine is executed by all processors owning the object A.

#include "petsc.h" 
int PetscBarrier(PetscObject obj)

A -PETSc object (Mat, Vec, IS, SNES etc...) Must be caste with a (PetscObject), can use PETSC_NULL (for MPI_COMM_WORLD)

This routine calls MPI_Barrier with the communicator of the PETSc Object "A".