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Power management

Early and accurate power analysis: myth or reality?

April 16, 2012 | Preeti Gupta | 222904444
Preeti Gupta, Director RTL Product Management, Apache Design explains some of the key advantages why RTL delivers the best trade-offs between accuracy and the ability to design for low-power.
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Power is receiving a mounting share of attention. Innovation, fueled by the information and internet age, poses new challenges for electronic systems across a spectrum of applications. Mobile devices continue to break new frontiers of functional integration. Phones are now your email, social networking interface, video and music player, gaming device, camera, GPS, and more all rolled into one. Yet the smart phone must survive through the day, and hopefully longer, without having to recharge the battery. Data centers and cloud computing grapple with power and carbon footprints as they move and process incredible amounts of data back and forth, consuming electricity to the order of 1-2% of the total that the entire world consumes. Advances in fabrication technology have made it possible for processors and system-on-chips (SoCs) to boast of over three-billion transistors, also pushing the limits of power density, integrity and reliability.

To address these challenges, power related design decisions are now being made throughout the product development cycle. Yet it is the early decisions that primarily govern the power and energy profile of a product. It is not surprising that key choices include how the design is partitioned into hardware versus software, the design architecture, and even to determine how the software controls the hardware. Once the design architecture is locked in, the most power-efficient implementation may lose out to an alternative more power-efficient architecture, even if the alternative is implemented half as well.

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