NOX Parameter Reference Page

All parameters are specified via parameter lists as defined by the NOX::Parameter::List class.

Here is the basic hierarchical structure of the top level list that is passed to a NOX::Solver::Manager object constructor reset call.

• "Nonlinear Solver" - see NOX::Solver::Manager for options

• "Direction" sublist - used by NOX::Solver::LineSearchBased, NOX::Solver::TrustRegionBased
  • "Method" - see NOX::Direction::Manager for options

  • "User Defined Constructor" - see NOX::Direction::Manager for details

  • "Newton" sublist - used by NOX::Direction::Newton, see class documentation for all details.
    • "Forcing Term Method"
    • "Forcing Term Initial Tolerance"
    • "Forcing Term Minimum Tolerance"
    • "Forcing Term Maximum Tolerance"
    • "Forcing Term Alpha"
    • "Forcing Term Gamma"
    • "Forcing Term User Defined Norm"
    • "Rescue Bad Newton Solver"

    • "Linear Solver" sublist, passed to NOX::Abstract::Group::computeNewton() by NOX::Direction::Newton
      • "Tolerance"

  • "Steepest Descent" sublist, used by NOX::Direction::SteepestDescent, see class documentation for details
    • "Scaling Type"

• "Cauchy Direction" sublist - used by NOX::Solver::TrustRegionBased, same options as "Direction" sublist

• "Line Search" sublist - used by NOX::Solver::LineSearchBased
  • "Method" - see NOX::LineSearch::Manager for options

  • "User Defined Constructor" - see NOX::LineSearch::Manager for details

  • "Backtrack" sublist - used by NOX::LineSearch::Backtrack, see class documentation for all details.
    • "Minimum Step"
    • "Default Step"
    • "Recovery Step"
    • "Maximum Step"
    • "Max Iters"
    • "Decrease Condition"

  • "Full Step" sublist - used by NOX::LineSearch::FullStep, see class documentation for all details
    • "Full Step"

  • "More'-Thuente" sublist - used by NOX::LineSearch::MoreThuente, see class documentation for all details
    • "Sufficient Decrease"
    • "Curvature Condition"
    • "Interval Width"
    • "Minimum Step"
    • "Maximum Step"
    • "Max Iters"
    • "Default Step"
    • "Recovery Step"

  • "Polynomial" sublist - used by NOX::LineSearch::MoreThuente, see class documentation for details
    • "Default Step"
    • "Max Iters"
    • "Minimum Step"
    • "Recovery Step"
    • "Interpolation Type"
    • "Min Bounds Factor"
    • "Max Bounds Factor"
    • "Sufficient Decrease Condition"
    • "Alpha Factor"
    • "Force Interpolation"
    • "Use Counters"
    • "Maximum Iteration for Increase"
    • "Allowed Relative Increase"
    • "User Defined Merit Function"
    • "User Defined Norm"

• "Trust Region" sublist, used by NOX::Solver::TrustRegionBased, see class documentation for details
  • "Minimum Trust Region Radius"
  • "Maximum Trust Region Radius"
  • "Minimum Improvement Ratio"
  • "Contraction Trigger Ratio"
  • "Contraction Factor"
  • "Expansion Trigger Ratio"
  • "Expansion Factor"
  • "Recovery Step"

• "Solver Options" sublist used by all solvers for basic options that all solvers should support (see individual solvers to make sure the option is supported).
  • "User Defined Pre/Post Operator" - a NOX::Parameter::PrePostOperator derived object that allows users to insert pre and post method calls into nox's solvers (before and after the NOX::Solver::Generic::iterate() and before and after the NOX::Solver::Generic::solve() methods). This object can be set in the parameter list since it is derived from NOX::Parameter::Arbitrary. See NOX::Parameter::PrePostOperator for details on how to implement this object.

• "Printing" sublist - used by NOX::Utils, see class documentation for details
  • "Output Information"
  • "MyPID"
  • "Output Processor"
  • "Output Precision"

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