lid velocity = 0.0625, prandtl # = 1., grashof # = 1. 0 SNES Function norm 2.391552133017e-01 0 KSP Residual norm 2.487202582099e-01 1 KSP Residual norm 2.061836020657e-02 2 KSP Residual norm 5.209414702046e-03 3 KSP Residual norm 1.568272395677e-03 4 KSP Residual norm 3.295627866513e-04 5 KSP Residual norm 9.155694279372e-05 6 KSP Residual norm 3.446349799027e-05 7 KSP Residual norm 7.611368243653e-06 8 KSP Residual norm 2.122390430419e-06 1 SNES Function norm 6.848107477293e-05 0 KSP Residual norm 2.038292834185e-05 1 KSP Residual norm 5.930353180150e-06 2 KSP Residual norm 9.461586866971e-07 3 KSP Residual norm 3.023548973492e-07 4 KSP Residual norm 8.500626673260e-08 5 KSP Residual norm 1.686734638740e-08 6 KSP Residual norm 4.802448278829e-09 7 KSP Residual norm 1.753962559544e-09 8 KSP Residual norm 3.745101287855e-10 9 KSP Residual norm 1.072508427565e-10 2 SNES Function norm 2.138743891290e-10 SNES Object: 2 MPI processes 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=17 total number of function evaluations=3 norm schedule ALWAYS Jacobian is built using colored finite differences on a DMDA SNESLineSearch Object: 2 MPI processes 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: 2 MPI processes 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: 2 MPI processes type: bjacobi number of blocks = 2 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: 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: (sub_) 1 MPI process type: seqbaij rows=32, cols=32, bs=4 package used to perform factorization: petsc total: nonzeros=448, allocated nonzeros=448 linear system matrix, which is also used to construct the preconditioner: Mat Object: (sub_) 1 MPI process type: seqbaij rows=32, cols=32, bs=4 total: nonzeros=448, allocated nonzeros=448 total number of mallocs used during MatSetValues calls=0 linear system matrix, which is also used to construct the preconditioner: Mat Object: 2 MPI processes type: mpibaij 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