lid velocity = 0.0625, prandtl # = 1., grashof # = 1. 0 SNES Function norm 2.391552133017e-01 0 KSP Residual norm 2.515333131411e-01 1 KSP Residual norm 1.396390175249e-02 2 KSP Residual norm 3.903932692033e-03 3 KSP Residual norm 7.056288033751e-04 4 KSP Residual norm 4.669631283998e-05 5 KSP Residual norm 5.322915676287e-06 6 KSP Residual norm 9.940062885412e-07 1 SNES Function norm 6.839858507068e-05 0 KSP Residual norm 2.243458836024e-05 1 KSP Residual norm 1.469665797093e-06 2 KSP Residual norm 2.107807911905e-07 3 KSP Residual norm 2.945467263227e-08 4 KSP Residual norm 5.695843492021e-09 5 KSP Residual norm 4.882870253526e-10 6 KSP Residual norm 4.483853760249e-11 2 SNES Function norm 8.557160032460e-11 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=12 total number of function evaluations=3 norm schedule ALWAYS Jacobian is built using colored finite differences on a DMDA 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=10000, 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: seqbaij rows=64, cols=64, bs=4 package used to perform factorization: petsc total: nonzeros=1024, allocated nonzeros=1024 linear system matrix, which is also used to construct the preconditioner: Mat Object: 1 MPI process type: seqbaij rows=64, cols=64, bs=4 total: nonzeros=1024, allocated nonzeros=1024 total number of mallocs used during MatSetValues calls=0 Number of SNES iterations = 2