Dear Dealii community, I am using a modified version of Code Gallery Quasi Static Compressibility <https://dealii.org/developer/doxygen/deal.II/code_gallery_Quasi_static_Finite_strain_Compressible_Elasticity.html> program to compute eigenvalues and eigenvectors of my system matrix. I have used ARPACK solver, however, I did not get the expected results. Bruno suggested me to go for PETSc/Slepsc solver to compute the eigenvalues. For this, I would need to convert the dealii data structures to the PETSc data structures using PETSc wrappers.
I looked at the Step-17 and Step-36 for this. However, I am unable to understand how I can change my current dealii data structures to the one using PETSc wrappers. I am also confused regarding what all variables do I need to convert using PETScWrappers. Also, for the system matrix, do I need to use PETScWrappers::MPI::BlockSparseMatrix or PETScWrappers::BlockSparseMatrix. This finite strain code already assembles the system matrix in parallel using multi-threading. What changes do I need to do in the assembly if I go on to use PETSc data structures. It would be great if someone could provide help with the above queries. Thanks a lot! Animesh -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to dealii+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/dealii/f1291d98-663f-4a7b-89b3-c09bb4386558n%40googlegroups.com.
