System Profiling and CPU Frequency/Voltage Scaling Based on Hardware/Software Partitioning
Date Issued
2006
Date
2006
Author(s)
Hsu, Chia-Hsiang
DOI
en-US
Abstract
We examine the possible energy savings by mapping critical software functions from a microprocessor to configurable logics. A system-on-a-chip containing configurable logic is now commercially available. The configurable logic is typically intended to implement peripherals and co-processors without increasing chip count. We show that reduced software energy is an extra significant benefit, making such chips even more useful. We identify critical
software functions of an application and implement them in the configurable logic such that the application can complete sooner, allowing us to put the system in a low-power state for longer periods, thus reducing energy.
We use estimation-based approach for a hypothetical device having a 32-bit MIPS-extension processor plus on-chip configurable logic, yielding energy savings of 40%, increasing to 54% assuming voltage scaling.
Subjects
電源消耗
軟/硬體劃分
電壓調整
energy consumption
hardware/software partitioning
voltage scaling
SDGs
Type
thesis
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