DM Object: 1 MPI process type: plex Mesh in 2 dimensions: Number of 0-cells per rank: 12 Number of 1-cells per rank: 21 Number of 2-cells per rank: 15 (6) Labels: ghost: 0 strata of sizes () vtk: 1 strata of sizes (9) Face Sets: 2 strata of sizes (3, 3) marker: 1 strata of sizes (12) depth: 3 strata of sizes (12, 21, 15) 0 time 0 |x| ( 0, 3.333) Nonlinear solve converged due to CONVERGED_FNORM_RELATIVE iterations 38 1 time 0.9934 |x| ( 0, 1.744) Nonlinear solve converged due to CONVERGED_SNORM_RELATIVE iterations 35 2 time 1.987 |x| ( 0, 1.41) Nonlinear solve converged due to CONVERGED_SNORM_RELATIVE iterations 33 3 time 2.98 |x| ( 0, 1.347) TS Object: 1 MPI process type: beuler maximum steps=1000 maximum time=2 total number of RHS function evaluations=100 total number of nonlinear solver iterations=106 total number of nonlinear solve failures=0 total number of linear solver iterations=108 total number of rejected steps=0 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=34 total number of function evaluations=66 norm schedule ALWAYS 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: gmres restart=30, using classical (unmodified) Gram-Schmidt orthogonalization with no iterative refinement happy breakdown tolerance=1e-30 maximum iterations=100, initial guess is zero tolerances: relative=1e-05, absolute=1e-50, divergence=10000 left preconditioning using PRECONDITIONED norm type for convergence test PC Object: 1 MPI process type: ilu out-of-place factorization 0 levels of fill tolerance for zero pivot 2.22045e-14 matrix ordering: natural factor fill ratio given 1, needed 1 Factored matrix: Mat Object: 1 MPI process type: seqaij rows=27, cols=27 package used to perform factorization: petsc total: nonzeros=81, allocated nonzeros=81 total number of mallocs used during MatSetValues calls=0 using I-node routines: found 9 nodes, limit used is 5 linear system matrix, which is also used to construct the preconditioner: Mat Object: 1 MPI process type: seqaij rows=27, cols=27 total: nonzeros=81, allocated nonzeros=81 total number of mallocs used during MatSetValues calls=0 using I-node routines: found 9 nodes, limit used is 5 CONVERGED_TIME at time 2.98018 after 3 steps