Wire congestion aware synthesis for a dynamically reconfigurable processor

This paper presents two iterative synthesis techniques between a high-level synthesizer (HLS) and the place and route tool to shorten the prolonged wire delay for a dynamically reconfigurable processor. At first, we use feedback wire delays for each context to a scheduler in the HLS. The experimental results showed that a critical-path delay was shorten 21% on average for applications with timing closure problems. Second, we skip the routing and estimate wire delays based on their congestions. The synthesis time was cut by 1/3 with only four points down on delay improvement rate.