Interconnect customization for a hardware fabric
| Autor: | Alex K. Jones, Justin Stander, Mustafa Baz, Brady Hunsaker, Gayatri Mehta |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Interconnection
Computer science Design flow Parallel computing Energy consumption computer.software_genre Computer Graphics and Computer-Aided Design Multiplexer Computer Science Applications Cardinality Computer Aided Design Electrical and Electronic Engineering computer Row Energy (signal processing) |
| Zdroj: | ACM Transactions on Design Automation of Electronic Systems. 14:1-32 |
| ISSN: | 1557-7309 1084-4309 |
| DOI: | 10.1145/1455229.1455240 |
| Popis: | This article describes several multiplexer-based interconnection strategies designed to improve energy consumption of stripe-based coarse-grain reconfigurable fabrics. Application requirements for the architecture as well as two dense subgraphs are extracted from a suite of signal and image processing benchmarks. These statistics are used to drive the strategy of the composition of multiplexer-based interconnect. The article compares interconnects that are fully connected between stripes, those with a cardinality of 8:1 to 4:1, and extensions that provide a 5:1 cardinality, limited 6:1 cardinality, and hybrids between 5:1 and 3:1 cardinalities. Additionally, dedicated vertical routes are considered replacing some computational units with dedicated pass-gates. Using a fabric interconnect model (FIM) written in XML, we demonstrate that fabric instances and mappers can be automatically generated using a Web-based design flow. Upon testing these instances, we found that using an 8:1 cardinality interconnect with 33% of the computational units replaced with dedicated pass-gates provided the best energy versus mappability tradeoff, resulting in a 50% energy improvement over fully connected rows and 20% energy improvement over an 8:1 cardinality interconnect without dedicated vertical routes. |
| Databáze: | OpenAIRE |
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