I was wondering how components were treated in PetscSection- my understanding is that a field with multiple components and multiple dofs would have those dofs duplicated for each component, but that does not appear to be the case. For example, let's say I have a field with 2 components and 2 dofs that covers 10 points. I expected that it would have size 40: 4 dofs per point x 10 points. Instead, it appears to have size 20: 2 dofs x 10 pts.
What then are components in PetscSection- is it just a way of telling the code that the dofs associated with a field at a point are really split across multiple components (ie for my example, I should define 4 dofs at each pt instead of 2)? How does that then interact with the re-ordering done in DMComplexVecGetClosure? -- Chris Eldred DOE Computational Science Graduate Fellow Graduate Student, Atmospheric Science, Colorado State University B.S. Applied Computational Physics, Carnegie Mellon University, 2009 chris.eldred at gmail.com
