Hi friends, I am parallelizing a code similar to step-44 in which it is possible to use either an iterative solver SolverCG or a direct solver, SparseDirectUMFPACK. I have used the latter in the non-parallel code and works great. Using iterative solvers like SolverCG I have problem in convergence so I want to check a direct solver which works in parallel. My problem is that my code doesn't recognize PETScWrappers::SparseDirectMUMPS <https://dealii.org/8.4.1/doxygen/deal.II/classPETScWrappers_1_1SparseDirectMUMPS.html> nor TrilinosWrappers::SolverDirect <https://www.dealii.org/8.4.0/doxygen/deal.II/classTrilinosWrappers_1_1SolverDirect.html> . I have installed Dealii and all of its dependent libraries (Petsc, Trilinos, P4est ...) via Candi (https://github.com/koecher/candi). I was wondering which direct solver I should use which works the same as SparseDirectUMFPACK and how to make dealii know them.
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