qttools.lyapunov.spectral#

Classes

Spectral — A solver for the Lyapunov equation by using the matrix spectrum.

source class Spectral(num_ref_iterations: int = 3, warning_threshold: float = 0.1, eig_compute_location: str = 'numpy', reduce_sparsity: bool = True, use_pinned_memory: bool = True)

Bases : LyapunovSolver

A solver for the Lyapunov equation by using the matrix spectrum.

Initializes the spectral Lyapunov solver.

Parameters

num_ref_iterations : int, optional — The number of refinement iterations to perform.
warning_threshold : float, optional — The threshold for the relative recursion error to issue a warning.
eig_compute_location : str, optional — The location where to compute the eigenvalues and eigenvectors. Can be either "numpy" or "cupy". Only relevant if cupy is used.
reduce_sparsity : bool, optional — Whether to reduce the sparsity of the system matrix.
use_pinned_memory : bool, optional — Whether to use pinnend memory if cupy is used. Default is True.