Kristoffer Robin Stokke
Håkon Kvale Stensland
Pål Halvorsen
ABSTRACT
Energy consumption is an important concern for mobile devices, where the evolution in battery storage capacity has not followed the power usage requirements of modern hardware. However, innovative and flexible hardware platforms give developers better means of optimising the energy consumption of their software. For example, the Tegra K1 System-on-Chip (SoC) offers two CPU clusters, GPU offloading, frequency scaling and other mechanisms to control the power and performance of applications. In this demonstration, the scenario is live video encoding, and participants can experiment with power usage and performance using the Tegra K1's hardware capabilities. A popular power-saving approach is a "race to sleep" strategy where the highest CPU frequency is used while the CPU has work to do, and then the CPU is put to sleep. Our own experiments indicate that an energy reduction of 28 % can be achieved by running the video encoder on the lowest CPU frequency at which the platform achieves an encoding frame rate equal to the minimum frame rate of 25 Frames Per Second (FPS).
- L. V. Agostini, I. S. Silva, and S. Bampi. Pipelined fast 2d dct architecture for jpeg image compression. In Integrated Circuits and Systems Design, 2001, 14th Symposium on., pages 226--231. IEEE, 2001. Google Scholar
Digital Library
- A. Castagnetti, C. Belleudy, S. Bilavarn, and M. Auguin. Power consumption modeling for dvfs exploitation. In Digital System Design: Architectures, Methods and Tools (DSD), 2010 13th Euromicro Conference on, pages 579--586. IEEE, 2010. Google ScholarDigital Library
- J. Flinn and M. Satyanarayanan. Powerscope: A tool for profiling the energy usage of mobile applications. In Mobile Computing Systems and Applications, 1999. Proceedings. WMCSA'99. Second IEEE Workshop on, pages 2--10. IEEE, 1999. Google ScholarDigital Library
- K. Lahiri, S. Dey, D. Panigrahi, and A. Raghunathan. Battery-driven system design: A new frontier in low power design. In Proceedings of the 2002 Asia and South Pacific Design Automation Conference, page 261. IEEE Computer Society, 2002. Google ScholarDigital Library
- NVIDIA. Jetson-TK1 Embedded Development Platform., 2014. http://www.nvidia.com/object/jetson-tk1-embedded-dev-kit.html.Google Scholar
- NVIDIA. Tegra K1 Next-Get Mobile Processor., 2014. http://www.nvidia.com/object/tegra-k1-processor.html.Google Scholar
- NVIDIA. Tegra K1 Whitepaper., 2014. www.nvidia.com/content/PDF/tegra_white_-papers/Tegra-K1-whitepaper-v1.0.pdf.Google Scholar
- NVIDIA. Variable SMP., 2014. www.nvidia.com/content/PDF/tegra_white_-papers/Variable-SMP-A-Multi-Core-CPU-Architecture-for-Low-Power-and-High-Performance.pdf.Google Scholar
- Texas Instruments. INA219 Power Rail Monitor., 2014. http://www.ti.com/product/ina219.Google Scholar
Index Terms
- Energy efficient video encoding using the tegra K1 mobile processor
Recommendations
Energy efficient continuous multimedia processing using the Tegra K1 mobile SoC
MoVid '15: Proceedings of the 7th ACM International Workshop on Mobile VideoEnergy consumption is an important issue for mobile devices, as the technological development in battery technology has not kept pace with the power requirements of mobile hardware. In this paper, we use a video rotation filter to study the effects of ...
Energy and Power Characterization of Parallel Programs Running on Intel Xeon Phi
ICPPW '14: Proceedings of the 2014 43rd International Conference on Parallel Processing WorkshopsIntel's Xeon Phi coprocessor has successfully proved its capability by being used in Tianhe-2 and Stampede, two of the top ten most powerful supercomputers today. It is almost certain that the popularity of Xeon Phi in heterogeneous computing will grow ...
Load Balancing of Multimedia Workloads for Energy Efficiency on the Tegra K1 Multicore Architecture
MMSys'17: Proceedings of the 8th ACM on Multimedia Systems ConferenceEnergy efficiency is a timely topic for modern mobile computing. Reducing the energy consumption of devices not only increases their battery lifetime, but also reduces the risk of hardware failure. Many researchers strive to understand the relationship ...
Comments