iter 1
solving 756 dof system to machine precision using arnoldi solver
constructing symmetric direct preconditioner
residual decreased by 14.5 orders using 0 krylov vectors
residual decreased by 0.2 orders using 1 krylov vectors
residual decreased by 0.0 orders using 2 krylov vectors
solver returned with residual 6e-16
spectrum: 2.1e-01..6.3e+00 (positive definite)
energy -1.43e-02 / e+0.0 and decreasing
residual norm: 2.8e-01 (2%)
iter 2
solving 756 dof system to machine precision using arnoldi solver
constructing symmetric direct preconditioner
residual decreased by 14.4 orders using 0 krylov vectors
residual decreased by 0.2 orders using 1 krylov vectors
residual decreased by 0.0 orders using 2 krylov vectors
solver returned with residual 6e-16
spectrum: 1.9e-01..3.9e+00 (positive definite)
energy -1.48e-02 / e+0.5 and decreasing
residual norm: 3.0e-01 (2%)
iter 3
solving 756 dof system to machine precision using arnoldi solver
constructing symmetric direct preconditioner
residual decreased by 14.5 orders using 0 krylov vectors
residual decreased by 0.2 orders using 1 krylov vectors
solver returned with residual 6e-16
spectrum: 1.8e-01..1.8e+01 (positive definite)
energy -4.04e-03 / e+1.0 and decreasing
residual norm: 2.1e-01 (4%)
iter 4
solving 756 dof system to machine precision using arnoldi solver
constructing symmetric direct preconditioner
residual decreased by 14.3 orders using 0 krylov vectors
residual decreased by 0.2 orders using 1 krylov vectors
solver returned with residual 5e-16
spectrum: 1.8e-01..1.3e+01 (positive definite)
energy -5.23e-03 / e+1.5 and decreasing
residual norm: 2.2e-01 (4%)
iter 5
solving 756 dof system to machine precision using arnoldi solver
constructing symmetric direct preconditioner
residual decreased by 14.4 orders using 0 krylov vectors
residual decreased by 0.3 orders using 1 krylov vectors
solver returned with residual 5e-16
spectrum: 1.7e-01..2.1e+01 (positive definite)
energy -4.35e-03 / e+2.0 and decreasing
residual norm: 1.7e-01 (5%)
iter 6
solving 756 dof system to machine precision using arnoldi solver
constructing symmetric direct preconditioner
residual decreased by 14.3 orders using 0 krylov vectors
residual decreased by 0.2 orders using 1 krylov vectors
solver returned with residual 5e-16
spectrum: 1.7e-01..1.4e+01 (positive definite)
energy -7.49e-03 / e+2.5 and decreasing
residual norm: 1.7e-01 (5%)
iter 7
solving 756 dof system to machine precision using arnoldi solver
constructing symmetric direct preconditioner
residual decreased by 14.3 orders using 0 krylov vectors
residual decreased by 0.2 orders using 1 krylov vectors
residual decreased by 0.0 orders using 2 krylov vectors
solver returned with residual 4e-16
spectrum: 1.6e-01..2.2e+01 (positive definite)
energy -5.75e-03 / e+3.0 and decreasing
residual norm: 1.2e-01 (7%)
iter 8
solving 756 dof system to machine precision using arnoldi solver
constructing symmetric direct preconditioner
residual decreased by 14.2 orders using 0 krylov vectors
residual decreased by 0.2 orders using 1 krylov vectors
residual decreased by 0.0 orders using 2 krylov vectors
solver returned with residual 3e-16
spectrum: 1.5e-01..1.5e+01 (positive definite)
energy -8.25e-03 / e+3.5 and decreasing
residual norm: 9.6e-02 (8%)
iter 9
solving 756 dof system to machine precision using arnoldi solver
constructing symmetric direct preconditioner
residual decreased by 14.3 orders using 0 krylov vectors
residual decreased by 0.3 orders using 1 krylov vectors
residual decreased by 0.0 orders using 2 krylov vectors
solver returned with residual 3e-16
spectrum: 1.4e-01..2.2e+01 (positive definite)
energy -4.45e-03 / e+4.0 and decreasing
residual norm: 5.8e-02 (11%)
iter 10
solving 756 dof system to machine precision using arnoldi solver
constructing symmetric direct preconditioner
residual decreased by 14.2 orders using 0 krylov vectors
residual decreased by 0.2 orders using 1 krylov vectors
solver returned with residual 2e-16
spectrum: 1.4e-01..1.5e+01 (positive definite)
energy -3.62e-03 / e+4.5 and decreasing
residual norm: 2.9e-02 (15%)
iter 11
solving 756 dof system to machine precision using arnoldi solver
constructing symmetric direct preconditioner
residual decreased by 14.2 orders using 0 krylov vectors
residual decreased by 0.3 orders using 1 krylov vectors
solver returned with residual 9e-17
spectrum: 1.3e-01..2.2e+01 (positive definite)
energy -8.10e-04 / e+5.0 and decreasing
residual norm: 1.1e-02 (21%)
iter 12
solving 756 dof system to machine precision using arnoldi solver
constructing symmetric direct preconditioner
residual decreased by 14.1 orders using 0 krylov vectors
residual decreased by 0.3 orders using 1 krylov vectors
residual decreased by 0.0 orders using 2 krylov vectors
solver returned with residual 4e-17
spectrum: 1.2e-01..1.5e+01 (positive definite)
energy -1.83e-04 / e+5.5 and decreasing
residual norm: 1.9e-03 (31%)
iter 13
solving 756 dof system to machine precision using arnoldi solver
constructing symmetric direct preconditioner
residual decreased by 14.2 orders using 0 krylov vectors
residual decreased by 0.3 orders using 1 krylov vectors
solver returned with residual 6e-18
spectrum: 8.4e-02..1.9e+01 (positive definite)
energy -4.69e-06 / e+6.0 and decreasing
residual norm: 3.0e-04 (41%)
iter 14
solving 756 dof system to machine precision using arnoldi solver
constructing symmetric direct preconditioner
residual decreased by 14.2 orders using 0 krylov vectors
residual decreased by 0.3 orders using 1 krylov vectors
solver returned with residual 9e-19
spectrum: 3.3e-02..1.6e+01 (positive definite)
energy -1.39e-07 / e+6.5 and decreasing
residual norm: 8.7e-05 (48%)
iter 15
solving 756 dof system to machine precision using arnoldi solver
constructing symmetric direct preconditioner
residual decreased by 14.3 orders using 0 krylov vectors
residual decreased by 0.2 orders using 1 krylov vectors
solver returned with residual 3e-19
spectrum: 2.1e-02..2.1e+01 (positive definite)
energy -9.20e-09 / e+7.0 and decreasing
residual norm: 2.5e-05 (55%)
iter 16
solving 756 dof system to machine precision using arnoldi solver
constructing symmetric direct preconditioner
residual decreased by 14.2 orders using 0 krylov vectors
residual decreased by 0.3 orders using 1 krylov vectors
solver returned with residual 8e-20
spectrum: 1.8e-02..1.6e+01 (positive definite)
energy -1.17e-09 / e+7.5 and decreasing
residual norm: 3.7e-06 (66%)
iter 17
solving 756 dof system to machine precision using arnoldi solver
constructing symmetric direct preconditioner
residual decreased by 14.3 orders using 0 krylov vectors
residual decreased by 0.2 orders using 1 krylov vectors
solver returned with residual 1e-20
spectrum: 1.6e-02..2.1e+01 (positive definite)
energy -2.12e-11 / e+8.0 and decreasing
residual norm: 3.4e-07 (80%)
iter 18
solving 756 dof system to machine precision using arnoldi solver
constructing symmetric direct preconditioner
residual decreased by 14.2 orders using 0 krylov vectors
residual decreased by 0.3 orders using 1 krylov vectors
solver returned with residual 1e-21
spectrum: 1.5e-02..1.7e+01 (positive definite)
energy -2.32e-13 / e+8.5 and decreasing
residual norm: 3.7e-09 (100%)