Used by NOX::Petsc::Group to provide a link to the external code for F and Jacobian evaluations (if needed).
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#include <NOX_Petsc_Interface.H>
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| Interface () |
| Constructor.
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virtual | ~Interface () |
| Destructor.
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virtual bool | computeF (const Vec &x, Vec &RHS)=0 |
| Compute F given the specified input vector, x. Returns true if computation was successful.
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virtual bool | computeJacobian (const Vec &x, Mat &Jac)=0 |
| Compute Jacobian given the specified input vector, x. Returns true if computation was successful.
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virtual bool | computePreconditioner (Mat &M)=0 |
| Compute the matrix M that will be used as the preconditioner. Returns true if computation was successful.
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virtual bool | preconditionVector (Vec &y)=0 |
| Return the action of the preconditioner on a vector. Returns true if computation was successful.
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Used by NOX::Petsc::Group to provide a link to the external code for F and Jacobian evaluations (if needed).
At a minimum the user must supply a computeF(). If the user is supplying their own Petsc Mat for the Jacobian, then they must supply a computeJacobian(). Preconditioning functions are only needed if the user wishes to supply their own preconditioner. Otherwise Petsc SLES has built-in preconditioners to use.
The documentation for this class was generated from the following file: