solve
solving 105 dof system to machine precision using arnoldi solver
constructing symmetric direct preconditioner
residual decreased by 15.6 orders using 0 krylov vectors
residual decreased by 0.0 orders using 1 krylov vectors
residual decreased by 0.0 orders using 2 krylov vectors
residual decreased by 0.0 orders using 3 krylov vectors
solver returned with residual 3e-15