0 SNES Function norm 5.83179 0 KSP Residual norm 5.0581 1 KSP Residual norm 0.0106943 2 KSP Residual norm 7.46624e-07 3 KSP Residual norm < 1.e-11 Linear solve converged due to CONVERGED_RTOL iterations 3 1 SNES Function norm < 1.e-11 L_2 Error: 0.00524438 Nonlinear solve converged due to CONVERGED_FNORM_RELATIVE iterations 1 SNES Object: 4 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=3 total number of function evaluations=2 norm schedule ALWAYS SNESLineSearch Object: 4 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: 4 MPI processes type: gmres restart=100, 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: 4 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: 0 (selected 0) Use vertices: 1 (vertex size 1) 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 49 interface 13 coarse 5 Coarsening ratios: all/coarse 9 interface/coarse 2 Active processes : 4 Total subdomains : 4 Dofs type : MIN MAX MEAN Interior dofs : 9 9 9 Interface dofs : 7 7 7 Primal dofs : 3 3 3 Local dofs : 16 16 16 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 1.43902 Factored matrix: Mat Object: (pc_bddc_dirichlet_) 1 MPI process type: seqaij rows=9, cols=9 package used to perform factorization: petsc total: nonzeros=59, allocated nonzeros=59 using I-node routines: found 7 nodes, limit used is 5 linear system matrix, which is also used to construct the preconditioner: Mat Object: (pc_bddc_dirichlet_) 1 MPI process type: seqaij rows=9, cols=9 total: nonzeros=41, allocated nonzeros=41 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 1.29333 Factored matrix: Mat Object: (pc_bddc_neumann_) 1 MPI process type: seqaij rows=15, cols=15 package used to perform factorization: petsc total: nonzeros=97, allocated nonzeros=97 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=15, cols=15 total: nonzeros=75, allocated nonzeros=75 total number of mallocs used during MatSetValues calls=0 not using I-node routines --- Coarse solver KSP Object: (pc_bddc_coarse_) 4 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_) 4 MPI processes type: redundant First (color=0) of 4 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 1.09524 Factored matrix: Mat Object: (pc_bddc_coarse_redundant_) 1 MPI process type: seqaij rows=5, cols=5 package used to perform factorization: petsc total: nonzeros=23, allocated nonzeros=23 using I-node routines: found 3 nodes, limit used is 5 linear system matrix, which is also used to construct the preconditioner: Mat Object: 1 MPI process type: seqaij rows=5, cols=5 total: nonzeros=21, allocated nonzeros=21 total number of mallocs used during MatSetValues calls=0 not using I-node routines linear system matrix, which is also used to construct the preconditioner: Mat Object: (pc_bddc_coarse_) 4 MPI processes type: mpiaij rows=5, cols=5 total: nonzeros=21, allocated nonzeros=21 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: 4 MPI processes type: is rows=49, cols=49 total: nonzeros=328, allocated nonzeros=386 total number of mallocs used during MatSetValues calls=0