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Antenna effect is an important issue that needs to be considered in the routing stage for modern design. In this paper, we study a layer assignment problem that arises during multi-layer global routing and takes antenna avoidance into account. The problem asks to transform a given 2-dimensional global routing result into a 3-dimensional one (i.e., a multi-layer one) and to minimize the amount of antenna...
We present in this paper a fast and stable global router called NTHU-Route 2.0 that improves the solution quality and runtime of a state-of-the-art router, NTHU-Route, by the following enhancements: (1) a new history based cost function, (2) new ordering methods for congested region identification and rip-up and reroute, and (3) two implementation techniques. The experimental results show that NTHU-Router...
In this paper, we present a new global router, NTHU-Route, for modern designs. NTHU-Route is based on iterative rip-ups and reroutes, and several techniques are proposed to enhance our global router. These techniques include (1) a history based cost function which helps to distribute overflow during iterative rip-ups and reroutes, (2) an adaptive multi-source multi-sink maze routing method to improve...
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