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Power-aware control speculation through selective throttling

J.L. Aragon, J. Gonzalez, A. Gonzalez
The Ninth International Symposium on High-Performance Computer Architecture, 2003. HPCA-9 2003. Proceedings.  
We propose Selective Throttling as an effective way of triggering different power-aware techniques (fetch throttling, decode throttling or disabling the selection logic).  ...  This work focuses on reducing the power dissipated by mis-speculated instructions.  ...  power-aware heuristic.  ... 
doi:10.1109/hpca.2003.1183528 dblp:conf/hpca/AragonGG03 fatcat:zd7qutg3effhbj3nyecumpsahi

Instruction flow-based front-end throttling for power-aware high-performance processors

Amirali Baniasadi, Andreas Moshovos
2001 Proceedings of the 2001 international symposium on Low power electronics and design - ISLPED '01  
We present a number of power-aware instruction front-end (fetch/decode) throttling methods for high-performance dynamically-scheduled superscalar processors.  ...  Our methods reduce power dissipation by selectively turning on and off instruction fetch and decode.  ...  POWER-AWARE FRONT-END THROTTLING Conventional front-end designs rely heavily on control flow speculation to forge ahead into the dynamic instruction stream.  ... 
doi:10.1145/383082.383088 dblp:conf/islped/BaniasadiM01 fatcat:nbagrpjzqbdcjmkf4wlhuvuujq

Control speculation for energy-efficient next-generation superscalar processors

J.L. Aragon, J. Gonzalez, A. Gonzalez
2006 IEEE transactions on computers  
We propose Selective Throttling, which triggers different power-aware techniques (fetch throttling, decode throttling, or disabling the selection logic) depending on the branch prediction confidence level  ...  branch mispredictions cause the processor to fetch useless instructions that are eventually squashed, increasing front-end energy and issue queue utilization and, thus, wasting around 30 percent of the power  ...  Power-Aware Knobs Various throttling knobs with different potential impact on performance are used: .  ... 
doi:10.1109/tc.2006.32 fatcat:ruxmn7s7m5hn5h2ewkwi5ljnam

Performance-aware Speculative Resource Oversubscription for Large-scale Clusters

Renyu Yang, Chunming Hu, Xiaoyang Sun, Peter Garraghan, Tianyu Wo, Zhenyu Wen, Hao Peng, Jie Xu, Chao Li
2020 IEEE Transactions on Parallel and Distributed Systems  
throttle.  ...  Node agents of those machines can however avoid any excessive resource oversubscription by means of a mechanism for admission control using multi-resource threshold control and performance-aware resource  ...  ROSE compacts the resource utilization by aggressively dispatching latency-agnostic tasks and reactively coordinates shared resources through QoS-aware throttling.  ... 
doi:10.1109/tpds.2020.2970013 fatcat:2tftu6ehofcqflyfhumaytry7u

Compiling for energy efficiency on timing speculative processors

John Sartori, Rakesh Kumar
2012 Proceedings of the 49th Annual Design Automation Conference on - DAC '12  
An exploration of targeted and standard compiler optimizations demonstrates that significant energy benefits are possible from TS-aware binary optimization.  ...  In this paper, we advocate that binaries for timing speculative processors should be optimized differently than those for conventional processors to maximize the energy benefits of timing speculation.  ...  through binary optimizations. • We demonstrate that the energy efficiency of timing speculative processors can be improved by altering their activity distributions through binary optimizations, without  ... 
doi:10.1145/2228360.2228602 dblp:conf/dac/SartoriK12 fatcat:anfejuhrcrfl7agwqpiykggskm

Performance Profiling of Embedded ConvNets under Thermal-Aware DVFS

Valentino Peluso, Roberto Giorgio Rizzo, Andrea Calimera
2019 Electronics  
Power management schemes, like voltage lowering and frequency scaling, are common knobs to control the thermal stability.  ...  Our study covers the behavior of two control policies, namely reactive and proactive, implemented through the Dynamic Voltage-Frequency Scaling (DVFS) mechanism available on commercial embedded CPUs.  ...  It is possible to observe different trends across the selected benchmarks. For instance, Inception v4 presented the first thermal throttling event 2.3× later than MobileNets v2 (2.93 s vs. 1.27 s).  ... 
doi:10.3390/electronics8121423 fatcat:rcit2h3ei5eadp6yoeadvwsc2m

Combining compiler and runtime IPC predictions to reduce energy in next generation architectures

Saurabh Chheda, Osman Unsal, Israel Koren, C. Mani Krishna, Csaba Andras Moritz
2004 Proceedings of the first conference on computing frontiers on Computing frontiers - CF'04  
Overall, static IPC based resource throttling alone can save up to 14% energy in the processor with less than 5% IPC degradation.  ...  We have found that static IPC-based fetch-throttling works very well, in most cases performing similarly or better than hardware-only runtime IPC-based schemes.  ...  Although the impact of true dependencies can be mitigated through the use of value speculation, the energy overhead of value speculation hardware has been found to be prohibitively high.  ... 
doi:10.1145/977091.977125 dblp:conf/cf/ChhedaUKKM04 fatcat:uvtrfe22hfe6pkkjg5tmzgtuiq

RAFT: A router architecture with frequency tuning for on-chip networks

Asit K. Mishra, Aditya Yanamandra, Reetuparna Das, Soumya Eachempati, Ravi Iyer, N. Vijaykrishnan, Chita R. Das
2011 Journal of Parallel and Distributed Computing  
As enablers for these techniques, we exploit Dynamic Voltage and Frequency Scaling (DVFS) and the imbalance in a generic router pipeline through time stealing.  ...  NoCs have a significant impact on the system's performance, power and reliability.  ...  Hence, it throttles the frequency/voltage of selected routers using DVFS.  ... 
doi:10.1016/j.jpdc.2010.09.005 fatcat:dvhpez5scfguxdqjkm6m7eqosq

Recent thermal management techniques for microprocessors

Joonho Kong, Sung Woo Chung, Kevin Skadron
2012 ACM Computing Surveys  
Microarchitectural techniques include both static and dynamic thermal management techniques that control hardware structures.  ...  Floorplanning covers a range of thermal-aware floorplanning techniques for 2D and 3D microprocessors.  ...  Decode throttling and speculation control restrict the decode width and the number of unresolved branches, respectively.  ... 
doi:10.1145/2187671.2187675 fatcat:bsvvqax2rbftxivi555mzzc7uy

Capabilities of in-flight thrust reversing

1969 Journal of Aircraft  
An effort was made to use the bang-bang control with full thrust reversal selected; the throttle was then used as a vernier for speed.  ...  In addi- tion, wave-off could be hazardous since, with the thrust re- verser selected, an instinctive advance of throttle would slow the airplane.  ... 
doi:10.2514/3.44046 fatcat:3fcr5qpsi5dovmdyual23vodfa

Energy-efficient and high-performance instruction fetch using a block-aware ISA

Ahmad Zmily, Christos Kozyrakis
2005 Proceedings of the 2005 international symposium on Low power electronics and design - ISLPED '05  
This paper presents a block-aware instruction set architecture (BLISS) that defines basic block descriptors in addition to the actual instructions in a program.  ...  Confidence prediction and throttling [16] has been proposed as a way to control over-speculation to limit energy wasted on misspeculated instructions.  ...  RELATED WORK Several researchers have worked on reducing power and energy consumption in or through the front-end.  ... 
doi:10.1145/1077603.1077614 dblp:conf/islped/ZmilyK05 fatcat:hgje6kudqvgkxiwlvic2qrpf7u

Energy-efficient and high-performance instruction fetch using a block-aware ISA

A. Zmily, C. Kozyrakis
2005 ISLPED '05. Proceedings of the 2005 International Symposium on Low Power Electronics and Design, 2005.  
This paper presents a block-aware instruction set architecture (BLISS) that defines basic block descriptors in addition to the actual instructions in a program.  ...  Confidence prediction and throttling [16] has been proposed as a way to control over-speculation to limit energy wasted on misspeculated instructions.  ...  RELATED WORK Several researchers have worked on reducing power and energy consumption in or through the front-end.  ... 
doi:10.1109/lpe.2005.195482 fatcat:t6ltfuvaqrhzxfg77qwqsh5gqu

Sampling in Thermal Simulation of Processors: Measurement, Characterization, and Evaluation

Ehsan K. Ardestani, Francisco J. Mesa-Martinez, Gabriel Southern, Elnaz Ebrahimi, Jose Renau
2013 IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems  
Index Terms-Infrared thermal measurement, thermal behavior characterization, thermal simulation, thermal-aware statistical sampling.  ...  Power densities in modern processors induce thermal issues that limit performance. Power and thermal models add complexity to architectural simulators, limiting the depth of analysis.  ...  This tradeoff is controlled by selecting the sampling parameters, as mentioned in Section V-A2 and explained in detail in [6] .  ... 
doi:10.1109/tcad.2013.2253156 fatcat:pv7yijd5pfcwrlvqmwcspb4qvu

Power modeling and thermal management techniques for manycores

Rajib Nath, Douglas Carmean, Tajana Simunic Rosing
2013 2013 IEEE Symposium on Computers and Communications (ISCC)  
To explore innovative thermal management techniques in such processors, we need an accurate online estimate of the power consumption.  ...  The rising number of cores in manycore architectures, along with technology scaling, results in high power densities and thermal issues on the die.  ...  Reactive DT M techniques remove the excess heat by slowing down the computation aggressively through pipeline throttling, power gating, DVFS, etc [14] .  ... 
doi:10.1109/iscc.2013.6755037 dblp:conf/iscc/NathCR13 fatcat:cqrat3dsnrf7bcgvobpkixc5nq

Experiences and challenges in deploying potentially invasive sensor systems for dynamic media applications

Nan-Wei Gong, Mathew Laibowitz, Joseph A. Paradiso
2010 2010 Cloud-Mobile Convergence for Virtual Reality Workshop (CMCVR 2010) Proceedings  
Our results provide insight into how different levels of information presentation and perceived user control can influence the user acceptance and engagement with such sensor platforms in ubiquitous deployments  ...  Extensions to this application explored the ability for wearable devices to select and control the playback of the ambient movie.  ...  Every application that ran for any significant length of time on the UMPs was opt-in, where users can opt-in with wearable sensors or through selections from touch screen inputs.  ... 
doi:10.1109/cmcvr.2010.5560610 fatcat:ieb23j2ulvcrxmaul6vmzmx2p4
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