Failed to load initial guess, so use a vector of all zeros. Linear solve converged due to CONVERGED_RTOL_NORMAL_EQUATIONS iterations 9 KSP Object: 4 MPI processes type: lsqr standard error not computed using inexact matrix norm maximum iterations=100, initial guess is zero tolerances: relative=1e-05, absolute=1e-50, divergence=10000. left preconditioning using UNPRECONDITIONED norm type for convergence test PC Object: 4 MPI processes type: hpddm levels: 2 Neumann matrix attached? TRUE coarse correction: BALANCED on process #0, value (+ threshold if available) for selecting deflation vectors: 20 grid and operator complexities: 1.09512 1.01219 KSP Object: (pc_hpddm_levels_1_) 4 MPI processes 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_hpddm_levels_1_) 4 MPI processes type: shell no name linear system matrix, followed by the matrix used to construct the preconditioner: Mat Object: A 4 MPI processes type: mpiaij rows=4889, cols=841 total: nonzeros=110171, allocated nonzeros=110171 total number of mallocs used during MatSetValues calls=0 using I-node (on process 0) routines: found 670 nodes, limit used is 5 Mat Object: 4 MPI processes type: normalh rows=841, cols=841 PC Object: (pc_hpddm_levels_1_) 4 MPI processes type: asm total subdomain blocks = 4, user-defined overlap restriction/interpolation type - BASIC Local solver information for first block is in the following KSP and PC objects on rank 0: Use -pc_hpddm_levels_1_ksp_view ::ascii_info_detail to display information for all blocks KSP Object: (pc_hpddm_levels_1_sub_) 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_hpddm_levels_1_sub_) 1 MPI process type: qr out-of-place factorization tolerance for zero pivot 2.22045e-14 matrix ordering: external factor fill ratio given 0., needed 0. Factored matrix: Mat Object: (pc_hpddm_levels_1_sub_) 1 MPI process type: spqr rows=718, cols=718 package used to perform factorization: spqr total: nonzeros=189808, allocated nonzeros=189808 linear system matrix, which is also used to construct the preconditioner: Mat Object: (pc_hpddm_levels_1_sub_) 1 MPI process type: normalh rows=718, cols=718 linear system matrix, followed by the matrix used to construct the preconditioner: Mat Object: A 4 MPI processes type: mpiaij rows=4889, cols=841 total: nonzeros=110171, allocated nonzeros=110171 total number of mallocs used during MatSetValues calls=0 using I-node (on process 0) routines: found 670 nodes, limit used is 5 Mat Object: 4 MPI processes type: normalh rows=841, cols=841 KSP Object: (pc_hpddm_coarse_) 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_hpddm_coarse_) 1 MPI process type: cholesky out-of-place factorization tolerance for zero pivot 2.22045e-14 matrix ordering: natural factor fill ratio given 5., needed 1.1 Factored matrix: Mat Object: (pc_hpddm_coarse_) 1 MPI process type: seqsbaij rows=80, cols=80, bs=20 package used to perform factorization: petsc total: nonzeros=4400, allocated nonzeros=4400 linear system matrix, which is also used to construct the preconditioner: Mat Object: (pc_hpddm_coarse_) 1 MPI process type: seqsbaij rows=80, cols=80, bs=20 total: nonzeros=4000, allocated nonzeros=4000 total number of mallocs used during MatSetValues calls=0 linear system matrix, followed by the matrix used to construct the preconditioner: Mat Object: A 4 MPI processes type: mpiaij rows=4889, cols=841 total: nonzeros=110171, allocated nonzeros=110171 total number of mallocs used during MatSetValues calls=0 using I-node (on process 0) routines: found 670 nodes, limit used is 5 Mat Object: 4 MPI processes type: normalh rows=841, cols=841 KSP type: lsqr Number of iterations = 9 Residual norm 1.63035e-05