  Linear solve converged due to CONVERGED_RTOL iterations 10
KSP Object: 8 MPI processes
  type: cg
  maximum iterations=10000, initial guess is zero
  tolerances: relative=1e-05, absolute=1e-50, divergence=10000.
  left preconditioning
  using PRECONDITIONED norm type for convergence test
PC Object: 8 MPI processes
  type: bddc
    Use verbose output: 0
    Use user-defined CSR: 0
    Use local mat graph: 1
    Connectivity graph topological dimension: 3
    Corner selection: 1 (selected 1)
    Use vertices: 1 (vertex size 3)
    Use edges: 1
    Use faces: 0
    Use true near null space: 0
    Use QR for single constraints on cc: 0
    Use change of basis on local edge nodes: 0
    Use change of basis on local face nodes: 0
    User defined change of basis matrix: 0
    Has change of basis matrix: 0
    Eliminate dirichlet boundary dofs: 0
    Switch on static condensation ops around the interface preconditioner: 0
    Use exact dirichlet trick: 0
    Interface extension: DIRICHLET
    Multilevel max levels: 0
    Multilevel coarsening ratio: 8
    Use estimated eigs for coarse problem: 0
    Use deluxe scaling: 0
    Use deluxe zerorows: 0
    Use deluxe singlemat: 0
    Rebuild interface graph for Schur principal minors: 0
    Number of dofs' layers for the computation of principal minors: -1
    Use user CSR graph to compute successive layers: 0
    Adaptive constraint selection threshold (active 0, userdefined 0): 0.
    Min constraints / connected component: 0
    Max constraints / connected component: 0
    Invert exact Schur complement for adaptive selection: 0
    Symmetric computation of primal basis functions: 1
    Num. Procs. to map coarse adjacency list: 0
    Coarse eqs per proc (significant at the coarsest level): 1
    Detect disconnected: 0 (filter 0)
    Benign subspace trick: 0 (change explicit 0)
    Benign subspace trick is active: 0
    Algebraic computation of no-net-flux: 0
  ********************************** STATISTICS AT LEVEL 0 **********************************
    Global dofs sizes: all 2160 interface 648 coarse 87
    Coarsening ratios: all/coarse 24 interface/coarse 7
    Active processes : 8
    Total subdomains : 8
    Dofs type        :	MIN	MAX	MEAN
    Interior  dofs   :	144	240	189
    Interface dofs   :	156	210	182
    Primal    dofs   :	36	36	36
    Local     dofs   :	300	450	371
    Local     subs   :	1	1
  --- Interior solver (rank 0)
    KSP Object: (pc_bddc_dirichlet_) 1 MPI process
      type: preonly
      maximum iterations=10000, initial guess is zero
      tolerances: relative=1e-05, absolute=1e-50, divergence=10000.
      left preconditioning
      using NONE norm type for convergence test
    PC Object: (pc_bddc_dirichlet_) 1 MPI process
      type: gamg
        type is MULTIPLICATIVE, levels=2 cycles=v
          Cycles per PCApply=1
          Using externally compute Galerkin coarse grid matrices
          GAMG specific options
            Threshold for dropping small values in graph on each level =       -1.       -1.      
            Threshold scaling factor for each level not specified = 1.
            AGG specific options
              Number of levels of aggressive coarsening 1
              Square graph aggressive coarsening
              MatCoarsen Object: (pc_bddc_dirichlet_pc_gamg_) 1 MPI process
                type: mis
              Number smoothing steps to construct prolongation 1
            Complexity:    grid = 1.125    operator = 1.05143
            Per-level complexity: op = operator, int = interpolation
                #equations  | #active PEs | avg nnz/row op | avg nnz/row int
                     18            1             18                0
                    144            1             44               12
      Coarse grid solver -- level 0 -------------------------------
        KSP Object: (pc_bddc_dirichlet_mg_coarse_) 1 MPI process
          type: preonly
          maximum iterations=10000, initial guess is zero
          tolerances: relative=1e-05, absolute=1e-50, divergence=10000.
          left preconditioning
          using NONE norm type for convergence test
        PC Object: (pc_bddc_dirichlet_mg_coarse_) 1 MPI process
          type: bjacobi
            number of blocks = 1
            Local solver information for first block is in the following KSP and PC objects on rank 0:
            Use -pc_bddc_dirichlet_mg_coarse_ksp_view ::ascii_info_detail to display information for all blocks
            KSP Object: (pc_bddc_dirichlet_mg_coarse_sub_) 1 MPI process
              type: preonly
              maximum iterations=1, initial guess is zero
              tolerances: relative=1e-05, absolute=1e-50, divergence=10000.
              left preconditioning
              using NONE norm type for convergence test
            PC Object: (pc_bddc_dirichlet_mg_coarse_sub_) 1 MPI process
              type: lu
                out-of-place factorization
                tolerance for zero pivot 2.22045e-14
                using diagonal shift on blocks to prevent zero pivot [INBLOCKS]
                matrix ordering: nd
                factor fill ratio given 5., needed 1.
                  Factored matrix follows:
                    Mat Object: (pc_bddc_dirichlet_mg_coarse_sub_) 1 MPI process
                      type: seqaij
                      rows=18, cols=18, bs=6
                      package used to perform factorization: petsc
                      total: nonzeros=324, allocated nonzeros=324
                        using I-node routines: found 4 nodes, limit used is 5
              linear system matrix = precond matrix:
              Mat Object: (pc_bddc_dirichlet_mg_coarse_sub_) 1 MPI process
                type: seqaij
                rows=18, cols=18, bs=6
                total: nonzeros=324, allocated nonzeros=324
                total number of mallocs used during MatSetValues calls=0
                  using I-node routines: found 4 nodes, limit used is 5
          linear system matrix = precond matrix:
          Mat Object: (pc_bddc_dirichlet_mg_coarse_sub_) 1 MPI process
            type: seqaij
            rows=18, cols=18, bs=6
            total: nonzeros=324, allocated nonzeros=324
            total number of mallocs used during MatSetValues calls=0
              using I-node routines: found 4 nodes, limit used is 5
      Down solver (pre-smoother) on level 1 -------------------------------
        KSP Object: (pc_bddc_dirichlet_mg_levels_1_) 1 MPI process
          type: chebyshev
            Chebyshev polynomial of first kind
            eigenvalue targets used: min 0.234693, max 2.58162
            eigenvalues provided (min 0.273728, max 2.34693) with transform: [0. 0.1; 0. 1.1]
          maximum iterations=2, nonzero initial guess
          tolerances: relative=1e-05, absolute=1e-50, divergence=10000.
          left preconditioning
          using NONE norm type for convergence test
        PC Object: (pc_bddc_dirichlet_mg_levels_1_) 1 MPI process
          type: jacobi
            type DIAGONAL
          linear system matrix = precond matrix:
          Mat Object: (pc_bddc_dirichlet_) 1 MPI process
            type: seqaij
            rows=144, cols=144, bs=3
            total: nonzeros=6300, allocated nonzeros=6300
            total number of mallocs used during MatSetValues calls=0
              has attached near null space
              using I-node routines: found 48 nodes, limit used is 5
      Up solver (post-smoother) same as down solver (pre-smoother)
      linear system matrix = precond matrix:
      Mat Object: (pc_bddc_dirichlet_) 1 MPI process
        type: seqaij
        rows=144, cols=144, bs=3
        total: nonzeros=6300, allocated nonzeros=6300
        total number of mallocs used during MatSetValues calls=0
          has attached near null space
          using I-node routines: found 48 nodes, limit used is 5
  --- Correction solver (rank 0)
    KSP Object: (pc_bddc_neumann_) 1 MPI process
      type: preonly
      maximum iterations=10000, initial guess is zero
      tolerances: relative=1e-05, absolute=1e-50, divergence=10000.
      left preconditioning
      using NONE norm type for convergence test
    PC Object: (pc_bddc_neumann_) 1 MPI process
      type: gamg
        type is MULTIPLICATIVE, levels=2 cycles=v
          Cycles per PCApply=1
          Using externally compute Galerkin coarse grid matrices
          GAMG specific options
            Threshold for dropping small values in graph on each level =       -1.       -1.      
            Threshold scaling factor for each level not specified = 1.
            AGG specific options
              Number of levels of aggressive coarsening 1
              Square graph aggressive coarsening
              MatCoarsen Object: (pc_bddc_neumann_pc_gamg_) 1 MPI process
                type: mis
              Number smoothing steps to construct prolongation 1
            Complexity:    grid = 1.06452    operator = 1.02271
            Per-level complexity: op = operator, int = interpolation
                #equations  | #active PEs | avg nnz/row op | avg nnz/row int
                     18            1             18                0
                    279            1             52               12
      Coarse grid solver -- level 0 -------------------------------
        KSP Object: (pc_bddc_neumann_mg_coarse_) 1 MPI process
          type: preonly
          maximum iterations=10000, initial guess is zero
          tolerances: relative=1e-05, absolute=1e-50, divergence=10000.
          left preconditioning
          using NONE norm type for convergence test
        PC Object: (pc_bddc_neumann_mg_coarse_) 1 MPI process
          type: bjacobi
            number of blocks = 1
            Local solver information for first block is in the following KSP and PC objects on rank 0:
            Use -pc_bddc_neumann_mg_coarse_ksp_view ::ascii_info_detail to display information for all blocks
            KSP Object: (pc_bddc_neumann_mg_coarse_sub_) 1 MPI process
              type: preonly
              maximum iterations=1, initial guess is zero
              tolerances: relative=1e-05, absolute=1e-50, divergence=10000.
              left preconditioning
              using NONE norm type for convergence test
            PC Object: (pc_bddc_neumann_mg_coarse_sub_) 1 MPI process
              type: lu
                out-of-place factorization
                tolerance for zero pivot 2.22045e-14
                using diagonal shift on blocks to prevent zero pivot [INBLOCKS]
                matrix ordering: nd
                factor fill ratio given 5., needed 1.
                  Factored matrix follows:
                    Mat Object: (pc_bddc_neumann_mg_coarse_sub_) 1 MPI process
                      type: seqaij
                      rows=18, cols=18, bs=6
                      package used to perform factorization: petsc
                      total: nonzeros=324, allocated nonzeros=324
                        using I-node routines: found 4 nodes, limit used is 5
              linear system matrix = precond matrix:
              Mat Object: (pc_bddc_neumann_mg_coarse_sub_) 1 MPI process
                type: seqaij
                rows=18, cols=18, bs=6
                total: nonzeros=324, allocated nonzeros=324
                total number of mallocs used during MatSetValues calls=0
                  using I-node routines: found 4 nodes, limit used is 5
          linear system matrix = precond matrix:
          Mat Object: (pc_bddc_neumann_mg_coarse_sub_) 1 MPI process
            type: seqaij
            rows=18, cols=18, bs=6
            total: nonzeros=324, allocated nonzeros=324
            total number of mallocs used during MatSetValues calls=0
              using I-node routines: found 4 nodes, limit used is 5
      Down solver (pre-smoother) on level 1 -------------------------------
        KSP Object: (pc_bddc_neumann_mg_levels_1_) 1 MPI process
          type: chebyshev
            Chebyshev polynomial of first kind
            eigenvalue targets used: min 0.262061, max 2.88267
            eigenvalues provided (min 0.100732, max 2.62061) with transform: [0. 0.1; 0. 1.1]
          maximum iterations=2, nonzero initial guess
          tolerances: relative=1e-05, absolute=1e-50, divergence=10000.
          left preconditioning
          using NONE norm type for convergence test
        PC Object: (pc_bddc_neumann_mg_levels_1_) 1 MPI process
          type: jacobi
            type DIAGONAL
          linear system matrix = precond matrix:
          Mat Object: (pc_bddc_neumann_) 1 MPI process
            type: seqaij
            rows=279, cols=279, bs=3
            total: nonzeros=14265, allocated nonzeros=14265
            total number of mallocs used during MatSetValues calls=0
              has attached near null space
              using I-node routines: found 93 nodes, limit used is 5
      Up solver (post-smoother) same as down solver (pre-smoother)
      linear system matrix = precond matrix:
      Mat Object: (pc_bddc_neumann_) 1 MPI process
        type: seqaij
        rows=279, cols=279, bs=3
        total: nonzeros=14265, allocated nonzeros=14265
        total number of mallocs used during MatSetValues calls=0
          has attached near null space
          using I-node routines: found 93 nodes, limit used is 5
  --- Coarse solver
    KSP Object: (pc_bddc_coarse_) 8 MPI processes
      type: preonly
      maximum iterations=1, initial guess is zero
      tolerances: relative=1e-05, absolute=1e-50, divergence=10000.
      left preconditioning
      using NONE norm type for convergence test
    PC Object: (pc_bddc_coarse_) 8 MPI processes
      type: redundant
        First (color=0) of 8 PCs follows
        KSP Object: (pc_bddc_coarse_redundant_) 1 MPI process
          type: preonly
          maximum iterations=10000, initial guess is zero
          tolerances: relative=1e-05, absolute=1e-50, divergence=10000.
          left preconditioning
          using NONE norm type for convergence test
        PC Object: (pc_bddc_coarse_redundant_) 1 MPI process
          type: svd
            All singular values smaller than 1e-12 treated as zero
            Provided essential rank of the matrix 0 (all other eigenvalues are zeroed)
          linear system matrix = precond matrix:
          Mat Object: 1 MPI process
            type: seqaij
            rows=87, cols=87
            total: nonzeros=5277, allocated nonzeros=5277
            total number of mallocs used during MatSetValues calls=0
              using I-node routines: found 25 nodes, limit used is 5
      linear system matrix = precond matrix:
      Mat Object: (pc_bddc_coarse_) 8 MPI processes
        type: mpiaij
        rows=87, cols=87
        total: nonzeros=5277, allocated nonzeros=6796
        total number of mallocs used during MatSetValues calls=0
          using I-node (on process 0) routines: found 3 nodes, limit used is 5
  linear system matrix = precond matrix:
  Mat Object: 8 MPI processes
    type: is
    rows=2160, cols=2160, bs=3
    total: nonzeros=156078, allocated nonzeros=156078
    total number of mallocs used during MatSetValues calls=0
      has attached near null space
