Dear Petsc users, I have a DM object by claiming DMDACreate3d(PETSC_COMM_WORLD,DMDA_BOUNDARY_NONE,DMDA_BOUNDARY_NONE,DMDA_BOUNDARY_NONE,DMDA_STENCIL_BOX,32,32,32,PETSC_DECIDE,PETSC_DECIDE,PETSC_DECIDE,3,5,0,0,0,&da);
There is a problem with it, because it uses DMDA_STENCIL_BOX, and the stencil width is 5, quite big. However, in fact, I don't need such big stencils everywhere, I only need it at a sparse number of locations. I'm wondering how to allocate memory only in those sparse number of locations? Thank you very much! Best, Hui
