Hello, Petsc team, Previously, following the function setupseciton in the following case https://petsc.org/main/src/dm/impls/plex/tutorials/ex7.c.html I successfully created a section layout and then imposed the Dirchlet boundary conditions.
It seems DMPlexCreateSection is able to replace the above setupsection function and specify points that are located on the boundary. My question is, does DMPlexCreateSection impose boundary condition automatically, e.g., Dirichlet boundary condition (u=0). Or we should impose these boundary conditions manually, then what is the benefit of DMPlexCreateSection compared with the above setupsection function? Thanks, Xiaodong