-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.

Index of all SNES routines

Table of Contents for all manual pages

Index of all manual pages