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AssigneeCadence Design Systems, Inc.
InventorsHongzhou Liu, Stephan Weber, Wangyang Zhang
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A system, method, and computer program product for efficiently finding the best Monte Carlo simulation samples for use as design corners for all design specifications to substitute for a full circuit design verification. Embodiments calculate a corner target value matching an input variation level by modeling the circuit performance with verified accuracy, estimate the corner based on a response surface model such that the corner has the highest probability density (or extrapolation from the worst sample if the model is inaccurate), and verify and/or adjust the corner by performing a small number of additional simulations. Embodiments also estimate the probability that a design already meets the design specifications at a specified variation level. Composite multimodal and non-Gaussian probability distribution functions enhance model accuracy. The extracted design corners may be of particular utility during circuit design iterations. A potential twenty-fold reduction in overall design specification verification time may be achieved.
A processor-implemented method for finding Monte Carlo simulation samples for use as corners of a design for a circuit, to facilitate the provision of a manufacturable description of the circuit, the method comprising:
A system for finding Monte Carlo simulation samples for use as corners of a design for a circuit, to facilitate the provision of a manufacturable description of the circuit, the system comprising:
A non-transitory computer readable medium storing instructions that, when executed by a processor, perform a method for finding Monte Carlo simulation samples for use as corners of a design for a circuit, to facilitate the provision of a manufacturable description of the circuit, the method comprising:
Dependencies are inferred from the claim text.