How do you design a clock mesh network?

Clock mesh distributes clock through grid structure instead of tree. Benefits: Lower skew (multiple paths average out variations), Better OCV tolerance, and Inherent redundancy. Design: Pre-mesh tree distributes clock to mesh vertices, mesh spreads clock across chip, taps from mesh to flip-flops. Challenges: Higher power (mesh constantly driven), complex analysis (multiple paths), and careful mesh design for balance. Hybrid approaches use mesh for critical regions, tree elsewhere. Analysis requires mesh-aware CTS tools and timing models. Used in high-performance processors where skew must be minimized despite large die sizes.