isNull : 1 MatNullSpace Object: 1 MPI process type not yet set Contains 0 vectors and the constant debug: 0 mu,rho,spring_stiffness: 0.01, 1, 39300 Full System lx,Lx: 0, 1 Full System ly,Ly: 0, 1 Full System Nx,Ny: 128, 128 Full System N_struct: 93 Full System mg_levels: 5 Full System hx,hy: 0.0078125, 0.0078125 Full System dt: 0.005 isNull : 1 MatNullSpace Object: 1 MPI process type not yet set Contains 0 vectors and the constant Truncated type: 1 Truncated mg_levels: 2 Truncated lx,Lx: 0.375,0.625 Truncated ly,Ly: 0.375,0.625 Truncated Nx,Ny: 32,32 Truncated hx,hy for A_s: 0.0078125,0.0078125 Truncated hx,hy for J: 0.0078125,0.0078125 Residual norms for ib_stokes_ solve. 0 KSP unpreconditioned resid norm 2.270243941051e+03 true resid norm 2.270243941051e+03 ||r(i)||/||b|| 1.000000000000e+00 Residual norms for stokes_ solve. 0 KSP unpreconditioned resid norm 4.775149126311e+03 true resid norm 4.775149126311e+03 ||r(i)||/||b|| 1.000000000000e+00 Residual norms for vel_mgcg_ solve. 0 KSP natural resid norm 6.267432921678e-02 true resid norm 1.000000000000e+00 ||r(i)||/||b|| 1.000000000000e+00 1 KSP natural resid norm 1.131540017491e-04 true resid norm 2.248640407923e-03 ||r(i)||/||b|| 2.248640407923e-03 2 KSP natural resid norm 2.108903131764e-07 true resid norm 4.316116468476e-06 ||r(i)||/||b|| 4.316116468476e-06 Residual norms for pre_mgcg_ solve. 0 KSP unpreconditioned resid norm 5.190249753491e+01 true resid norm 5.190249753491e+01 ||r(i)||/||b|| 1.000000000000e+00 1 KSP unpreconditioned resid norm 2.613646142274e+01 true resid norm 2.613646142274e+01 ||r(i)||/||b|| 5.035684728882e-01 2 KSP unpreconditioned resid norm 5.727486843402e+00 true resid norm 5.727486843402e+00 ||r(i)||/||b|| 1.103508909094e-01 3 KSP unpreconditioned resid norm 1.235965380015e+00 true resid norm 1.235965380015e+00 ||r(i)||/||b|| 2.381321590900e-02 4 KSP unpreconditioned resid norm 3.159901559858e-01 true resid norm 3.159901559858e-01 ||r(i)||/||b|| 6.088149337578e-03 5 KSP unpreconditioned resid norm 1.156369368898e-01 true resid norm 1.156369368898e-01 ||r(i)||/||b|| 2.227964787476e-03 6 KSP unpreconditioned resid norm 4.084491453854e-02 true resid norm 4.084491453854e-02 ||r(i)||/||b|| 7.869547031156e-04 7 KSP unpreconditioned resid norm 1.687558469769e-02 true resid norm 1.687558469768e-02 ||r(i)||/||b|| 3.251401281091e-04 8 KSP unpreconditioned resid norm 8.895600308256e-03 true resid norm 8.895600308257e-03 ||r(i)||/||b|| 1.713906022013e-04 9 KSP unpreconditioned resid norm 3.977199533817e-03 true resid norm 5.190249753491e+01 ||r(i)||/||b|| 1.000000000000e+00 KSP Object: (pre_mgcg_) 1 MPI process type: gmres restart=30, using Classical (unmodified) Gram-Schmidt Orthogonalization with no iterative refinement happy breakdown tolerance 1e-30 maximum iterations=20, initial guess is zero tolerances: relative=0.0001, absolute=1e-50, divergence=10000. right preconditioning using UNPRECONDITIONED norm type for convergence test PC Object: (pre_mgcg_) 1 MPI process type: mg type is MULTIPLICATIVE, levels=5 cycles=v Cycles per PCApply=1 Using Galerkin computed coarse grid matrices Coarse grid solver -- level 0 ------------------------------- KSP Object: (pre_mgcg_mg_coarse_) 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: (pre_mgcg_mg_coarse_) 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 follows: Mat Object: (pre_mgcg_mg_coarse_) 1 MPI process type: seqaij rows=64, cols=64 package used to perform factorization: petsc total: nonzeros=484, allocated nonzeros=484 not using I-node routines linear system matrix = precond matrix: Mat Object: 1 MPI process type: seqaij rows=64, cols=64 total: nonzeros=484, allocated nonzeros=484 total number of mallocs used during MatSetValues calls=0 not using I-node routines Down solver (pre-smoother) on level 1 ------------------------------- KSP Object: (pre_mgcg_mg_levels_1_) 1 MPI process type: richardson damping factor=1. maximum iterations=2, nonzero initial guess tolerances: relative=1e-05, absolute=1e-50, divergence=10000. left preconditioning using NONE norm type for convergence test PC Object: (pre_mgcg_mg_levels_1_) 1 MPI process type: sor type = local_symmetric, iterations = 1, local iterations = 1, omega = 1.85 linear system matrix = precond matrix: Mat Object: 1 MPI process type: seqaij rows=256, cols=256 total: nonzeros=2116, allocated nonzeros=2116 total number of mallocs used during MatSetValues calls=0 not using I-node routines Up solver (post-smoother) same as down solver (pre-smoother) Down solver (pre-smoother) on level 2 ------------------------------- KSP Object: (pre_mgcg_mg_levels_2_) 1 MPI process type: richardson damping factor=1. maximum iterations=2, nonzero initial guess tolerances: relative=1e-05, absolute=1e-50, divergence=10000. left preconditioning using NONE norm type for convergence test PC Object: (pre_mgcg_mg_levels_2_) 1 MPI process type: sor type = local_symmetric, iterations = 1, local iterations = 1, omega = 1.85 linear system matrix = precond matrix: Mat Object: 1 MPI process type: seqaij rows=1024, cols=1024 total: nonzeros=8836, allocated nonzeros=8836 total number of mallocs used during MatSetValues calls=0 not using I-node routines Up solver (post-smoother) same as down solver (pre-smoother) Down solver (pre-smoother) on level 3 ------------------------------- KSP Object: (pre_mgcg_mg_levels_3_) 1 MPI process type: richardson damping factor=1. maximum iterations=2, nonzero initial guess tolerances: relative=1e-05, absolute=1e-50, divergence=10000. left preconditioning using NONE norm type for convergence test PC Object: (pre_mgcg_mg_levels_3_) 1 MPI process type: sor type = local_symmetric, iterations = 1, local iterations = 1, omega = 1.85 linear system matrix = precond matrix: Mat Object: 1 MPI process type: seqaij rows=4096, cols=4096 total: nonzeros=36100, allocated nonzeros=36100 total number of mallocs used during MatSetValues calls=0 not using I-node routines Up solver (post-smoother) same as down solver (pre-smoother) Down solver (pre-smoother) on level 4 ------------------------------- KSP Object: (pre_mgcg_mg_levels_4_) 1 MPI process type: richardson damping factor=1. maximum iterations=2, nonzero initial guess tolerances: relative=1e-05, absolute=1e-50, divergence=10000. left preconditioning using NONE norm type for convergence test PC Object: (pre_mgcg_mg_levels_4_) 1 MPI process type: sor type = local_symmetric, iterations = 1, local iterations = 1, omega = 1.85 linear system matrix = precond matrix: Mat Object: 1 MPI process type: seqaij rows=16384, cols=16384 total: nonzeros=145924, allocated nonzeros=145924 total number of mallocs used during MatSetValues calls=0 has attached null space not using I-node routines Up solver (post-smoother) same as down solver (pre-smoother) linear system matrix = precond matrix: Mat Object: 1 MPI process type: seqaij rows=16384, cols=16384 total: nonzeros=145924, allocated nonzeros=145924 total number of mallocs used during MatSetValues calls=0 has attached null space not using I-node routines 1 KSP unpreconditioned resid norm 3.035714337034e-01 true resid norm 3.035714337034e-01 ||r(i)||/||b|| 6.357318393070e-05 1 KSP unpreconditioned resid norm 6.888912829419e+02 true resid norm 6.888912829406e+02 ||r(i)||/||b|| 3.034437271184e-01 IB Iterations: 1 Total S2 Iterations: 7 Avg S2 Iterations: 7 Total Full Stokes Iterations: 1 Avg Full Stokes Iterations: 1 Total Truncated Stokes Iterations: 25 Avg Truncated Stokes Iterations per S2 iteration: 3.57143 WARNING! There are options you set that were not used! WARNING! could be spelling mistake, etc! There are 3 unused database options. They are: Option left: name:-pre_mgcg_mg_coarse_ksp_rtol value: 1e-12 source: file Option left: name:-stokes_inner_ksp_max_it value: 2 source: file Option left: name:-stokes_inner_ksp_rtol value: 1e-6 source: file