0 SNES Function norm 0.137187 0 KSP Residual norm 0.120308 1 KSP Residual norm 0.0327681 2 KSP Residual norm 0.00345772 3 KSP Residual norm 0.000364886 4 KSP Residual norm 3.85056e-05 5 KSP Residual norm 4.06341e-06 6 KSP Residual norm 4.28803e-07 7 KSP Residual norm 4.52507e-08 8 KSP Residual norm 4.77521e-09 9 KSP Residual norm 5.039e-10 10 KSP Residual norm 5.318e-11 1 SNES Function norm 6.672e-11 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=10 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 maxstep=1.000000e+08, 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 = 4, amount of overlap = 0 restriction/interpolation type - RESTRICT Additive Schwarz: local solve composition type - MULTIPLICATIVE 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 using NONE norm type for convergence test 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 1.27273 Factored matrix follows: Mat Object: (sub_) 1 MPI process type: seqaij rows=8, cols=8 package used to perform factorization: petsc total: nonzeros=28, allocated nonzeros=28 not using I-node routines linear system matrix = precond matrix: Mat Object: (sub_) 1 MPI process type: seqaij rows=8, cols=8 total: nonzeros=22, allocated nonzeros=22 total number of mallocs used during MatSetValues calls=0 not using I-node routines linear system matrix = precond matrix: Mat Object: 1 MPI process type: seqaij rows=32, cols=32 total: nonzeros=136, allocated nonzeros=136 total number of mallocs used during MatSetValues calls=0 not using I-node routines N: 32 error L2 1.05096e-11 inf 2.94655e-11