KSP Object: (st_fieldsplit_pressure_sub_1_ksp_) 1024 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=0.001, absolute=1e-50, divergence=10000. left preconditioning using PRECONDITIONED norm type for convergence test PC Object: (st_fieldsplit_pressure_sub_1_ksp_) 1024 MPI processes type: gamg type is MULTIPLICATIVE, levels=4 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 = 0. 0. Threshold scaling factor for each level not specified = 1. AGG specific options Symmetric graph false Number of levels to square graph 10 Number smoothing steps 1 Coarse grid solver -- level ------------------------------- KSP Object: (st_fieldsplit_pressure_sub_1_ksp_mg_coarse_) 1024 MPI processes 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: (st_fieldsplit_pressure_sub_1_ksp_mg_coarse_) 1024 MPI processes type: bjacobi number of blocks = 1024 Local solve is same for all blocks, in the following KSP and PC objects: KSP Object: (st_fieldsplit_pressure_sub_1_ksp_mg_coarse_sub_) 1 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: (st_fieldsplit_pressure_sub_1_ksp_mg_coarse_sub_) 1 MPI processes 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: 1 MPI processes type: seqaij rows=14, cols=14 package used to perform factorization: petsc total: nonzeros=196, allocated nonzeros=196 total number of mallocs used during MatSetValues calls =0 using I-node routines: found 3 nodes, limit used is 5 linear system matrix = precond matrix: Mat Object: 1 MPI processes type: seqaij rows=14, cols=14 total: nonzeros=196, allocated nonzeros=196 total number of mallocs used during MatSetValues calls =0 using I-node routines: found 3 nodes, limit used is 5 linear system matrix = precond matrix: Mat Object: 1024 MPI processes type: mpiaij rows=14, cols=14 total: nonzeros=196, allocated nonzeros=196 total number of mallocs used during MatSetValues calls =0 using I-node (on process 0) routines: found 3 nodes, limit used is 5 Down solver (pre-smoother) on level 1 ------------------------------- KSP Object: (st_fieldsplit_pressure_sub_1_ksp_mg_levels_1_) 1024 MPI processes type: chebyshev eigenvalue estimates used: min = 0.139547, max = 1.53501 eigenvalues estimate via gmres min 0.0361779, max 1.39547 eigenvalues estimated using gmres with translations [0. 0.1; 0. 1.1] KSP Object: (st_fieldsplit_pressure_sub_1_ksp_mg_levels_1_esteig_) 1024 MPI processes type: gmres restart=30, using Classical (unmodified) Gram-Schmidt Orthogonalization with no iterative refinement happy breakdown tolerance 1e-30 maximum iterations=10, initial guess is zero tolerances: relative=1e-12, absolute=1e-50, divergence=10000. left preconditioning using PRECONDITIONED norm type for convergence test estimating eigenvalues using noisy right hand side 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: (st_fieldsplit_pressure_sub_1_ksp_mg_levels_1_) 1024 MPI processes type: sor type = local_symmetric, iterations = 1, local iterations = 1, omega = 1. linear system matrix = precond matrix: Mat Object: 1024 MPI processes type: mpiaij rows=1743, cols=1743 total: nonzeros=119661, allocated nonzeros=119661 total number of mallocs used during MatSetValues calls =0 not using I-node (on process 0) routines Up solver (post-smoother) same as down solver (pre-smoother) Down solver (pre-smoother) on level 2 ------------------------------- KSP Object: (st_fieldsplit_pressure_sub_1_ksp_mg_levels_2_) 1024 MPI processes type: chebyshev eigenvalue estimates used: min = 0.13791, max = 1.51701 eigenvalues estimate via gmres min 0.0381158, max 1.3791 eigenvalues estimated using gmres with translations [0. 0.1; 0. 1.1] KSP Object: (st_fieldsplit_pressure_sub_1_ksp_mg_levels_2_esteig_) 1024 MPI processes type: gmres restart=30, using Classical (unmodified) Gram-Schmidt Orthogonalization with no iterative refinement happy breakdown tolerance 1e-30 maximum iterations=10, initial guess is zero tolerances: relative=1e-12, absolute=1e-50, divergence=10000. left preconditioning using PRECONDITIONED norm type for convergence test estimating eigenvalues using noisy right hand side 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: (st_fieldsplit_pressure_sub_1_ksp_mg_levels_2_) 1024 MPI processes type: sor type = local_symmetric, iterations = 1, local iterations = 1, omega = 1. linear system matrix = precond matrix: Mat Object: 1024 MPI processes type: mpiaij rows=124032, cols=124032 total: nonzeros=5437626, allocated nonzeros=5437626 total number of mallocs used during MatSetValues calls =0 using scalable MatPtAP() implementation not using I-node (on process 0) routines Up solver (post-smoother) same as down solver (pre-smoother) Down solver (pre-smoother) on level 3 ------------------------------- KSP Object: (st_fieldsplit_pressure_sub_1_ksp_mg_levels_3_) 1024 MPI processes type: chebyshev eigenvalue estimates used: min = 0.164368, max = 1.80805 eigenvalues estimate via gmres min 0.0345746, max 1.64368 eigenvalues estimated using gmres with translations [0. 0.1; 0. 1.1] KSP Object: (st_fieldsplit_pressure_sub_1_ksp_mg_levels_3_esteig_) 1024 MPI processes type: gmres restart=30, using Classical (unmodified) Gram-Schmidt Orthogonalization with no iterative refinement happy breakdown tolerance 1e-30 maximum iterations=10, initial guess is zero tolerances: relative=1e-12, absolute=1e-50, divergence=10000. left preconditioning using PRECONDITIONED norm type for convergence test estimating eigenvalues using noisy right hand side 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: (st_fieldsplit_pressure_sub_1_ksp_mg_levels_3_) 1024 MPI processes type: sor type = local_symmetric, iterations = 1, local iterations = 1, omega = 1. linear system matrix = precond matrix: Mat Object: 1024 MPI processes type: mpiaij rows=3076949, cols=3076949 total: nonzeros=45021021, allocated nonzeros=45021021 total number of mallocs used during MatSetValues calls =0 not using I-node (on process 0) routines Up solver (post-smoother) same as down solver (pre-smoother) linear system matrix = precond matrix: Mat Object: 1024 MPI processes type: mpiaij rows=3076949, cols=3076949 total: nonzeros=45021021, allocated nonzeros=45021021 total number of mallocs used during MatSetValues calls =0 not using I-node (on process 0) routines --------------------------------- linear system matrix = precond matrix: Mat Object: 1024 MPI processes type: mpiaij rows=3076949, cols=3076949 total: nonzeros=45021021, allocated nonzeros=45021021 total number of mallocs used during MatSetValues calls =0 not using I-node (on process 0) routines