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In this paper, we address the problem of individual wire-length prediction and demonstrate its usefulness in timing-driven placement. Many researchers have observed that different placement algorithms produce different individual wire lengths. We postulate that to obtain accurate results, individual wire-length prediction should be coupled with the placement flow. We embed the wire-length prediction into the clustering step of our fast placer implementation (FPI) framework . The predicted wire lengths act as constraints for the simulated annealing refinement stage, which guides the placement toward a solution fulfilling them. Experimental results show that our prediction process yields accurate results without loss of quality and incurs only a small cost in placement effort. We successfully apply the wire-length prediction technique to timing-driven placement. Our new slack assignment algorithm with predicted wire lengths (p-SLA) gives on average an 8% improvement in timing performance compared with the conventional modified zero-slack algorithm (m-ZSA).