[deal.II] Re: Discrete Galekin with periodic boundary condition

No, you were right, I couldn't get the correct results without 'Triangulation::add_periodicity()'. The current my local environment does not configure deal.ii with MPI and Trilinos as the example step-45, which shows how this function is used. But I guess I can still use the " 'Triangulation

[deal.II] Re: Discrete Galekin with periodic boundary condition

You were right. I couldn't get the correct results without Triangulation::add_periodicity(). So, it seems that I should compile deal.ii with MPI,P4EST,Trilinos to use that function(Triangulation::add_periodicity()) since my triangulation should be parallel distributed... Right? Best, Jaek

Re: [deal.II] function interpolation (projection) to PETScWrappers::MPI::BlockVector mixed up after dof re-numbering

Dear Jean-Paul, It was a mistake in my part. I deleted the post as soon as I found out my mistake. There is no problem with the code in trying what I want to do. I was confused between different ways of distributing triangulations that are offered (e.g. step-17,18 vs step-40). Please do not both