NonlinearProblem

class NonlinearProblem : public godzilla::Problem 

Nonlinear problem.

Subclassed by godzilla::ExplicitDGLinearProblem, godzilla::ExplicitFVLinearProblem, godzilla::FENonlinearProblem

Public Functions

virtual void create() override: Called to construct the object.

virtual void run() override: Run the problem.

KrylovSolver get_ksp() const: Get underlying KSP.

void set_ksp_operators(const Matrix &A, const Matrix &B): Set KSP operators.

const Matrix &get_jacobian() const: Get Jacobian matrix.

bool converged(): true if solve converged, otherwise false

void set_use_matrix_free(bool mf_operator, bool mf)

Use matrix free finite difference matrix vector products to apply the Jacobian.

Parameters:

mf_operator – use matrix-free only the A matrix
mf – use matrix-free for both the A and P matrices