I'm likely revealing a lot of ignorance, but in order to use HPDDM as a preconditioner does my system matrix (I am using the same matrix for A and P) need to be block type, e.g. baij or sbaij ? In MOOSE our default is aij and I am currently getting
[1]PETSC ERROR: #1 buildTwo() at /raid/lindad/moose/petsc/arch-moose/include/HPDDM_schwarz.hpp:1012 with options: -pc_type hpddm -pc_hpddm_block_splitting -pc_hpddm_coarse_mat_type baij -pc_hpddm_coarse_pc_type lu -pc_hpddm_define_subdomains -pc_hpddm_levels_1_eps_gen_non_hermitian -pc_hpddm_levels_1_eps_nev 50 -pc_hpddm_levels_1_eps_threshold 0.1 -pc_hpddm_levels_1_st_matstructure SAME -pc_hpddm_levels_1_st_share_sub_ksp -pc_hpddm_levels_1_sub_pc_factor_mat_solver_type mumps -pc_hpddm_levels_1_sub_pc_type lu Alex
