Nonideal battery and main memory effects on CPU speed-setting for low power
نویسندگان
چکیده
This paper explores the system-level power-performance tradeoffs of dynamically varying CPU speed. Previous work in CPU speed-setting considered only the power of the CPU and only CPUs that vary supply voltage with frequency. This work takes a broader approach, considering total system power, battery capacity, and main memory bandwidth. The results, which are up to a factor of four less than ideal, show that all three must be considered when setting the CPU speed.
منابع مشابه
Balancing Batteries, Power, and Performance: System Issues in CPU Speed-Setting for Mobile Computing A DISSERTATION SUBMITTED TO THE GRADUATE SCHOOL IN PARTIAL FULFILLMENT OF THE REQUIREMENTS for the degree of DOCTOR OF PHILOSOPHY in ELECTRICAL AND COMPUTER ENGINEERING by
This thesis studies the problem of balancing power and performance in mobile computers, specifically, trading off power for performance by CPU speed-setting. The traditional approach to power-performance trade-offs assumes that batteries and memory bandwidth are ideal and focuses on lowering the energy per operation. This research, however, shows that non-ideal battery and performance behavior ...
متن کاملStudying the Effects of Most Common Encryption Algorithms
Wireless networks play critical roles in present work, home, and public places, so the needs of protecting of such networks are increased. Encryption algorithms play vital roles in information systems security. Those algorithms consume a significant amount of computing resources such as CPU time, memory, and battery power. CPU and memory usability are increasing with a suitable rates, but batte...
متن کاملOS-Directed Throttling of Processor Activity for Dynamic Power Management
Today, embedding fast processors in portable devices is infeasible because such battery operated systems cannot be supplied with enough power and cannot be kept cool for a reasonable period of time. Many processors offer the feature of reducible clock speed to save power. Reducing clock speed improves the performance-to-energy ratio for three reasons: First, the number of stall cycles that the ...
متن کاملEvaluating the Effects of Symmetric Cryptography Algorithms on Power Consumption for Different Data Types
As the importance and the value of exchanged data over the Internet or other media types are increasing, the search for the best solution to offer the necessary protection against the data thieves’ attacks. Encryption algorithms play a main role in information security systems. On the other side, those algorithms consume a significant amount of computing resources such as CPU time, memory, and ...
متن کاملUltra-Low-Energy DSP Processor Design for Many-Core Parallel Applications
Background and Objectives: Digital signal processors are widely used in energy constrained applications in which battery lifetime is a critical concern. Accordingly, designing ultra-low-energy processors is a major concern. In this work and in the first step, we propose a sub-threshold DSP processor. Methods: As our baseline architecture, we use a modified version of an existing ultra-low-power...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- IEEE Trans. VLSI Syst.
دوره 9 شماره
صفحات -
تاریخ انتشار 2001