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Thermal aware clock synthesis considering stochastic variation and correlations

In this paper, we have proposed a thermal aware routing based parameterization to generate a clock model that takes the stochastic temperature variation into consideration. The worst-case skew is calculated by using the transient analysis. The proposed Thermal Aware Routing based Clock Tree Optimization (TARCO) is performed level by level via the use of sensitivities from the proposed macromodel. The experimental results show that our algorithm reduces up to 5X worst-case skew in comparison to the existing bonded-skew based Deferred Merge Embedding (DME) approach, and 1.7X worst-case skew compared to Perturbation based Clock Optimization (PECO) and 2.1X compared to Temperature Aware Clocktree Optimization (TACO).