Title
Timing-driven nonuniform depopulation-based clustering
Abstract
Low-cost FPGAs have comparable number of Configurable Logic Blocks (CLBs) with respect to resource-rich FPGAs but have much less routing tracks. For CAD tools, this situation increases the difficulty of successfully mapping a circuit into the low-cost FPGAs. Instead of switching to resource-rich FPGAs, the designers could employ depopulation-based clustering techniques which underuse CLBs, hence improve routability by spreading the logic over the architecture. However, all depopulation-based clustering algorithms to this date increase critical path delay. In this paper, we present a timing-driven nonuniform depopulation-based clustering technique, T-NDPack, that targets critical path delay and channel width constraints simultaneously. T-NDPack adjusts the CLB capacity based on the criticality of the Basic Logic Element (BLE). Results show that T-NDPack reduces minimum channel width by 11.07% while increasing the number of CLBs by 13.28% compared to T-VPack. More importantly, T-NDPack decreases critical path delay by 2.89%.
Year
DOI
Venue
2010
10.1155/2010/158602
Int. J. Reconfig. Comp.
Keywords
DocType
Volume
basic logic element,low-cost fpgas,targets critical path delay,depopulation-based clustering algorithm,date increase critical path,configurable logic blocks,critical path delay,underuse clbs,clustering technique,comparable number,timing-driven nonuniform
Journal
2010,
Citations 
PageRank 
References 
6
0.47
14
Authors
2
Name
Order
Citations
PageRank
Hanyu Liu160.47
Ali Akoglu215729.40