| -snes_linesearch_alpha <1e-4> | - slope descent parameter | |
| -snes_linesearch_damping <1.0> | - initial step length | |
| -snes_linesearch_maxstep <length> | - if the length the initial step is larger than this then the step is scaled back to be of this length at the beginning of the line search | |
| -snes_linesearch_max_it <40> | - maximum number of shrinking step | |
| -snes_linesearch_minlambda <1e-12> | - minimum step length allowed | |
| -snes_linesearch_order <cubic,quadratic> | - order of the approximation |
This line search will always produce a step that is less than or equal to, in length, the full step size.