Post-layout OPE-predicted redundant wire insertion for clock skew minimization

Abstract

Based on the equilibrium concept of inserting load in a physical balance, the insertion of redundant wires can be used to minimize the clock skew in an OPE-predicted clock tree. For five tested benchmarks, the experimental results show that our proposed algorithm only increases 2.8% of the total load on the average for the insertion of OPE-predicted redundant wires and decreases 30.85 ps of the clock skew on the average to obtain the near zero-skew result in reasonable CPU time.