0 SNES Function norm 0.197531 0 KSP Residual norm 0.0658436 1 KSP Residual norm 0.0219479 2 KSP Residual norm 0.00731596 3 KSP Residual norm 0.00243865 4 KSP Residual norm 0.000812884 5 KSP Residual norm 0.000270961 6 KSP Residual norm 9.03205e-05 7 KSP Residual norm 3.01068e-05 8 KSP Residual norm 1.00356e-05 9 KSP Residual norm 3.3452e-06 10 KSP Residual norm 1.11507e-06 11 KSP Residual norm 3.71689e-07 12 KSP Residual norm 1.23896e-07 13 KSP Residual norm 4.12988e-08 14 KSP Residual norm 1.37663e-08 15 KSP Residual norm 4.58876e-09 16 KSP Residual norm 1.52959e-09 17 KSP Residual norm 5.099e-10 18 KSP Residual norm 1.700e-10 19 KSP Residual norm 5.665e-11 1 SNES Function norm 1.700e-10 Nonlinear solve converged due to CONVERGED_FNORM_RELATIVE iterations 1 SNES Object: 1 MPI process 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=19 total number of function evaluations=2 norm schedule ALWAYS Jacobian is built using a DMDA local Jacobian SNESLineSearch Object: 1 MPI process 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: 1 MPI process type: richardson damping factor=1. 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: 1 MPI process type: asm total subdomain blocks = 2, amount of overlap = 0 restriction/interpolation type - RESTRICT Local solver information for first block is in the following KSP and PC objects on rank 0: Use -ksp_view ::ascii_info_detail to display information for all blocks KSP Object: (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: (sub_) 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 1.35714 Factored matrix: Mat Object: (sub_) 1 MPI process type: seqaij rows=8, cols=8 package used to perform factorization: petsc total: nonzeros=38, allocated nonzeros=38 not using I-node routines linear system matrix, which is also used to construct the preconditioner: Mat Object: (sub_) 1 MPI process type: seqaij rows=8, cols=8 total: nonzeros=28, allocated nonzeros=28 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: 1 MPI process type: seqaij rows=16, cols=16 total: nonzeros=64, allocated nonzeros=64 total number of mallocs used during MatSetValues calls=0 not using I-node routines N: 16 error L2 2.12442e-11 inf 4.24885e-11