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Routability has become a challenging issue with designs scaling down. Recently, global-routing-based routing congestion estimators (GRCEs) are widely used to detect the routability problems in the early VLSI design stages. To make GRCEs fast, using parallel routing approaches to speed up GRCEs is a promising direction. However, integrating existing parallel routing approaches into a GRCE may degrade...
To address the routability issue, routing congestion estimators (RCE) become essential in industrial design flow. Recently, several RCEs [1–4] based on global routing engines are developed, but they typically ignore the effects of routing on timing so that the identified routing paths may be overlong and thus impractical. To be aware of the timing issues, our proposed global-routing-based RCE obeys...
Routability has become a critical issue in VLSI design flow. To avoid producing an unroutable design, many placers [4–7] invoke global routers to get a congestion map and then move cells to reduce congestion based on this map. However, as cells move, the accuracy of the congestion map degrades, thereby affecting the effectiveness of the placer in minimizing congestions. Moreover, most global routers...
The increasing complexity of interconnection designs has enhanced the importance of research into global routing when seeking high-routability (low overflow) results or rapid search paths that report wirelength estimations to a placer. This work presents two routing techniques, namely circular fixed-ordering monotonic routing and evolution-based rip-up and rerouting using a two-stage cost function...
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