0 SNES Function norm 14.5309 0 KSP Residual norm 17.9962 1 KSP Residual norm 0.718899 2 KSP Residual norm 0.074823 3 KSP Residual norm 0.00270797 4 KSP Residual norm 0.000198576 5 KSP Residual norm 2.29871e-05 6 KSP Residual norm 9.70025e-07 7 KSP Residual norm 3.21553e-08 8 KSP Residual norm 2.7741e-09 1 SNES Function norm 5.38576e-09 SNES Object: 5 MPI processes type: newtonls maximum iterations=50, maximum function evaluations=10000 tolerances: relative=1e-08, absolute=1e-50, solution=1e-08 total number of linear solver iterations=8 total number of function evaluations=2 norm schedule ALWAYS SNESLineSearch Object: 5 MPI processes type: bt interpolation: cubic alpha=1.000000e-04 maxlambda=1.000000e+00, minlambda=1.000000e-12 tolerances: relative=1.000000e-08, absolute=1.000000e-15, lambda=1.000000e-08 maximum iterations=40 KSP Object: 5 MPI processes type: gmres restart=30, using Classical (unmodified) Gram-Schmidt Orthogonalization with no iterative refinement happy breakdown tolerance 1e-30 maximum iterations=10000, initial guess is zero tolerances: relative=1e-09, absolute=1e-50, divergence=10000. left preconditioning using PRECONDITIONED norm type for convergence test PC Object: 5 MPI processes type: bddc Use verbose output: 0 Use user-defined CSR: 0 Use local mat graph: 1 Connectivity graph topological dimension: 2 Corner selection: 1 (selected 1) Use vertices: 1 (vertex size 1) Use edges: 0 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 529 interface 67 coarse 17 Coarsening ratios: all/coarse 31 interface/coarse 3 Active processes : 5 Total subdomains : 5 Dofs type : MIN MAX MEAN Interior dofs : 49 105 92 Interface dofs : 15 39 27 Primal dofs : 5 10 7 Local dofs : 64 144 120 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 not checking for convergence PC Object: (pc_bddc_dirichlet_) 1 MPI process type: lu out-of-place factorization tolerance for zero pivot 2.22045e-14 matrix ordering: nd factor fill ratio given 5., needed 1.57233 Factored matrix: Mat Object: (pc_bddc_dirichlet_) 1 MPI process type: seqaij rows=105, cols=105 package used to perform factorization: petsc total: nonzeros=1989, allocated nonzeros=1989 not using I-node routines linear system matrix, which is also used to construct the preconditioner: Mat Object: (pc_bddc_dirichlet_) 1 MPI process type: seqaij rows=105, cols=105 total: nonzeros=1265, allocated nonzeros=1265 total number of mallocs used during MatSetValues calls=0 not using I-node routines --- 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 not checking for convergence PC Object: (pc_bddc_neumann_) 1 MPI process type: lu out-of-place factorization tolerance for zero pivot 2.22045e-14 matrix ordering: nd factor fill ratio given 5., needed 1.55203 Factored matrix: Mat Object: (pc_bddc_neumann_) 1 MPI process type: seqaij rows=122, cols=122 package used to perform factorization: petsc total: nonzeros=2446, allocated nonzeros=2446 not using I-node routines linear system matrix, which is also used to construct the preconditioner: Mat Object: (pc_bddc_neumann_) 1 MPI process type: seqaij rows=122, cols=122 total: nonzeros=1576, allocated nonzeros=1576 total number of mallocs used during MatSetValues calls=0 not using I-node routines --- Coarse solver KSP Object: (pc_bddc_coarse_) 5 MPI processes type: preonly maximum iterations=1, initial guess is zero tolerances: relative=1e-05, absolute=1e-50, divergence=10000. left preconditioning not checking for convergence PC Object: (pc_bddc_coarse_) 5 MPI processes type: redundant First (color=0) of 5 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 not checking for convergence PC Object: (pc_bddc_coarse_redundant_) 1 MPI process type: lu out-of-place factorization tolerance for zero pivot 2.22045e-14 matrix ordering: nd factor fill ratio given 5., needed 1.1629 Factored matrix: Mat Object: (pc_bddc_coarse_redundant_) 1 MPI process type: seqaij rows=17, cols=17 package used to perform factorization: petsc total: nonzeros=257, allocated nonzeros=257 using I-node routines: found 5 nodes, limit used is 5 linear system matrix, which is also used to construct the preconditioner: Mat Object: 1 MPI process type: seqaij rows=17, cols=17 total: nonzeros=221, allocated nonzeros=221 total number of mallocs used during MatSetValues calls=0 using I-node routines: found 11 nodes, limit used is 5 linear system matrix, which is also used to construct the preconditioner: Mat Object: (pc_bddc_coarse_) 5 MPI processes type: mpiaij rows=17, cols=17 total: nonzeros=221, allocated nonzeros=221 total number of mallocs used during MatSetValues calls=0 using I-node (on process 0) routines: found 1 nodes, limit used is 5 linear system matrix, which is also used to construct the preconditioner: Mat Object: 5 MPI processes type: is rows=529, cols=529 total: nonzeros=7832, allocated nonzeros=8924 total number of mallocs used during MatSetValues calls=0