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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Jindal, T. Alpert, C.J. Jiang Hu Zhuo Li Gi Joon Nam Winn, C.B. |
| Copyright Year | 2010 |
| Description | Author affiliation: Department of ECE, Texas A&M University, College Station, Texas (Jindal, T.) || IBM Systems and Technology Group, Essex Junction, Vermont (Gi Joon Nam) || IBM Austin Research Lab, Austin, Texas (Alpert, C.J.; Jiang Hu; Zhuo Li) |
| Abstract | This work proposes a new problem of identifying large and tangled logic structures in a synthesized netlist. Large groups of cells that are highly interconnected to each other can often create potential routing hotspots that require special placement constraints. They can also indicate problematic clumps of logic that either require resynthesis to reduce wiring demand or specialized datapath placement. At a glance, this formulation appears similar to conventional circuit clustering, but there are two important distinctions. First, we are interested in finding large groups of cells that represent entire logic structures like adders and decoders, as opposed to clusters with only a handful of cells. Second, we seek to pull out only the structures of interest, instead of assigning every cell to a cluster to reduce problem complexity. This work proposes new metrics for detecting structures based on Rent's rule that, unlike traditional cluster metrics, are able to fairly differentiate between large and small groups of cells. Next, we demonstrate how these metrics can be applied to identify structures in a netlist. Finally, our experiments demonstrate the ability to predict and alleviate routing hotspots on a real industry design using our metrics and method. |
| Starting Page | 603 |
| Ending Page | 608 |
| File Size | 708495 |
| Page Count | 6 |
| File Format | |
| ISBN | 9781424466771 |
| ISSN | 0738100X |
| e-ISBN | 9781450300025 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2010-06-13 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Association for Computing Machinery, Inc. (ACM) |
| Subject Keyword | Very large scale integration Routing Integrated circuit interconnections Engines Wiring Adders Decoding Logic design Clustering algorithms Congestion Prediction Rent Rule Clustering Tangled Logic |
| Content Type | Text |
| Resource Type | Article |
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