| -tao_nls_pc_type | - "none","ahess","bfgs","petsc" | |
| -tao_nls_bfgs_scale_type | - "ahess","phess","bfgs" | |
| -tao_nls_init_type | - "constant","direction","interpolation" | |
| -tao_nls_update_type | - "step","direction","interpolation" | |
| -tao_nls_sval | - perturbation starting value | |
| -tao_nls_imin | - minimum initial perturbation | |
| -tao_nls_imax | - maximum initial perturbation | |
| -tao_nls_pmin | - minimum perturbation | |
| -tao_nls_pmax | - maximum perturbation | |
| -tao_nls_pgfac | - growth factor | |
| -tao_nls_psfac | - shrink factor | |
| -tao_nls_imfac | - initial merit factor | |
| -tao_nls_pmgfac | - merit growth factor | |
| -tao_nls_pmsfac | - merit shrink factor | |
| -tao_nls_eta1 | - poor steplength; reduce radius | |
| -tao_nls_eta2 | - reasonable steplength; leave radius | |
| -tao_nls_eta3 | - good steplength; increase readius | |
| -tao_nls_eta4 | - excellent steplength; greatly increase radius | |
| -tao_nls_alpha1 | - alpha1 reduction | |
| -tao_nls_alpha2 | - alpha2 reduction | |
| -tao_nls_alpha3 | - alpha3 reduction | |
| -tao_nls_alpha4 | - alpha4 reduction | |
| -tao_nls_alpha | - alpha5 reduction | |
| -tao_nls_mu1 | - mu1 interpolation update | |
| -tao_nls_mu2 | - mu2 interpolation update | |
| -tao_nls_gamma1 | - gamma1 interpolation update | |
| -tao_nls_gamma2 | - gamma2 interpolation update | |
| -tao_nls_gamma3 | - gamma3 interpolation update | |
| -tao_nls_gamma4 | - gamma4 interpolation update | |
| -tao_nls_theta | - theta interpolation update | |
| -tao_nls_omega1 | - omega1 step update | |
| -tao_nls_omega2 | - omega2 step update | |
| -tao_nls_omega3 | - omega3 step update | |
| -tao_nls_omega4 | - omega4 step update | |
| -tao_nls_omega5 | - omega5 step update | |
| -tao_nls_mu1_i | - mu1 interpolation init factor | |
| -tao_nls_mu2_i | - mu2 interpolation init factor | |
| -tao_nls_gamma1_i | - gamma1 interpolation init factor | |
| -tao_nls_gamma2_i | - gamma2 interpolation init factor | |
| -tao_nls_gamma3_i | - gamma3 interpolation init factor | |
| -tao_nls_gamma4_i | - gamma4 interpolation init factor | |
| -tao_nls_theta_i | - theta interpolation init factor |