Adaptive simulation of electronic circuits

Adaptive simulation is a method for enhancing the efficiency of software facilities for the computer-aided design of LSI and VLSI circuits. This paper examines the formulation and main principles of the implementation of this method, which consists in the automatic selection of the most appropriate model for each fragment of the large-scale circuit in the course of computations. Methods for solving the three basic problems of adaptive simulation are proposed: the choice of a criterion for changing models; determination of initial (at the moment of change) values of the state variables; and the separation of the circuit into fragments.