NOX Solver Options

The Solver Options sublist controls status-test evaluation and fixed-point solver behavior.

<Solver Options>
Status Test Check Type
Type:

string

Value:

"Complete", "Minimal", or "None"

Usage:

Optional

Default:

"Minimal"

Description:

Controls how NOX evaluates the status-test tree. "Minimal" may stop after the overall result is known. "Complete" evaluates every test in the tree. "None" asks individual status tests to skip evaluation when supported.

Fixed Point Iteration Type
Type:

string

Value:

"Seidel" or "Jacobi"

Usage:

Optional for the NOX multiphysics fixed-point solver

Default:

"Seidel"

Description:

Selects sequential Seidel updates or simultaneous Jacobi updates. The standard Vertex-CFD line-search configuration does not use this entry.

Note

Do not set Observer or User Defined Pre/Post Operator in XML. Immediately before constructing the Tempus integrator, Vertex-CFD overwrites User Defined Pre/Post Operator with its own NOX observer vector. NOX rejects a list containing both observer entries. User Defined Merit Function is likewise a C++ object entry, not an XML-selectable algorithm name.

Example

Listing 17 Minimal status-test evaluation used by a Vertex-CFD implicit solve.
1          <ParameterList name="Solver Options">
2            <Parameter name="Status Test Check Type" type="string" value="Minimal"/>
3          </ParameterList> <!-- Solver Options -->