A 3D physical design flow based on Open Access

3D IC technologies have recently attracted great attention due to the potential performance improvement, power consumption reduction and heterogeneous integration. In this paper we present a 3D physical design flow based on OpenAccess (named 3D-Craft) to facilitate the rapid adoption of 3D technology. The OpenAccess extension for 3D-craft is discussed, and the key components including the 3D placer mPL-3D and the 3D router TMARS are presented. We also demonstrate the application of 3D-craft for the 3D physical design of an open-source processor, and show that the 3D implementation can reduce both the half-perimeter wirelength and the routed wirelength by about 30% compared to the 2D implementation.