Hello
I want to know whether is it possible that a specific field in the section have
been defined at some time on edges and other times on the vertices. This change
in the dof , I think, may cause problem, especially in the global vector size
of the dm. At times when the field changes to be
Normally for pressure Poisson's with standard discretizations such as finite
differences, finite elements/volumes multigrid (either geometric or algebraic
depending on the circumstances) is absolutely the go to method and it is rare
to have a reason to use something else.
For SPH you will
Most of the linear solvers in PETSc are suitable for non symmetric problems.
You should not use KSPCG, KSPCR or PCCHOLESKY since they are only for symmetric
problems.
Finding the best solver for your problem depends on your problem and how
large a problem you want to solve. Please tell
