Name
Title | ||
|---|---|---|
Boomerang: Reducing Power Consumption of Response Packets in NoCs with Minimal Performance Impact |
Abstract | ||
|---|---|---|
Most power reduction mechanisms for NoC channel buffers rely on on-demand wakeup to transition from a low-power state to the active state. Two drawbacks of on-demand wakeup limit its effectiveness: 1) performance impact caused by wakeup delays, and 2) energy and area cost of sleep circuitry itself. What makes the problem harder to solve is that solutions to either problem tend to exacerbate the other. For example, faster wakeup from a power-gated state requires greater charge/discharge current for the sleep transistors while using nimbler sleep transistors implies long wakeup delays. As a result, powerdowns have to be conservatively prescribed, missing many power-saving opportunities. We propose Boomerang, a novel power-saving method that overcomes the above drawbacks. Specifically, based on the observation that a response is always preceded by a request, we let the request trigger wakeup of the buffer that is to be used by its response in the (near) future, instead of using on-demand wakeups. Hiding the wakeup delay completely, Boomerang allows us to employ aggressive sleep policies and use low-cost power gating circuits on response buffers. |
Year | DOI | Venue |
|---|---|---|
2010 | 10.1109/L-CA.2010.15 | Computer Architecture Letters |
Keywords | Field | DocType |
active state,response packets,power-gated state,request trigger wakeup,minimal performance impact,low-power state,sleep circuitry,power consumption,sleep transistor,on-demand wakeups,on-demand wakeup,aggressive sleep policy,wakeup delay,transistors,network on chip,system on a chip,switches,routing,mobile communication | System on a chip,Computer science,Network packet,Communication channel,Network on a chip,Real-time computing,Power gating,Electronic circuit,Transistor,Mobile telephony | Journal |
Volume | Issue | ISSN |
9 | 2 | 1556-6056 |
Citations | PageRank | References |
1 | 0.37 | 0 |
Authors | ||
8 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Zhen Fang | 1 | 91 | 7.62 |
| Erik Hallnor | 2 | 1 | 0.37 |
| Bin Li | 3 | 208 | 8.64 |
| Mike Leddige | 4 | 1 | 0.37 |
| Donglai Dai | 5 | 109 | 7.90 |
| Seung Eun Lee | 6 | 224 | 22.34 |
| Srihari Makineni | 7 | 600 | 37.89 |
| Ravishankar K. Iyer | 8 | 1119 | 75.72 |