On Jul 17, 2012, at 10:10 PM, Barry Smith wrote: > > On Jul 17, 2012, at 10:07 PM, Jed Brown wrote: > >> On Tue, Jul 17, 2012 at 10:06 PM, Barry Smith <bsmith at mcs.anl.gov> wrote: >> Ok, then the destructor called by the MPI_Comm_del() would decrease the >> reference count by one and if it gets to zero then does the delete as usual. >> >> This is exactly what is done, but PETSC_COMM_WORLD and PETSC_COMM_SELF >> outlive PetscFinalize, so we remove one more reference count for each of >> those so that it actually gets collected. > > But Shri indicated there is a possible problem, what is that problem? Or is > there none? There is no problem. I was just trying to put across a generalized way of handling MPI attributes in the PETSc code so that specific implementations, e.g threadcomm and others, can use a common code rather than having specific implementations.
Shri > > Barry > >
