Name
Title | ||
|---|---|---|
Accurate modeling and calculation of delay and energy overheads of dynamic voltage scaling in modern high-performance microprocessors |
Abstract | ||
|---|---|---|
Dynamic voltage and frequency scaling (DVS) has been studied for well over a decade, and even commercial systems widely support DVS nowadays. Nevertheless, existing DVS transition overhead models do not accurately reflect modern DVS architectures including modern DC-DC converters, PLL (Phase Lock Loop), and voltage and frequency change policies. Incorrect DVS overhead models prevent one from achieving the maximum energy gain, by misleading the DVS control policies. This paper introduces an accurate DVS overhead model, in terms of both energy consumption and time penalty, through detailed observation of modern DVS setups and voltage and frequency change guidelines from vendors. We introduce new major contributors to the DVS overhead including the performance underdrive loss of the DVS-enabled microprocessor, additional inductor IR loss, and so on, as well as consideration of power efficiency from discontinuous-mode DC-DC conversion. Our DVS overhead model enhances the DVS overhead model accuracy from 86% to 238% for Intel Core2 Duo E6850 and LTC3733. |
Year | DOI | Venue |
|---|---|---|
2010 | 10.1145/1840845.1840938 | ISLPED |
Keywords | Field | DocType |
dvs control policy,dynamic voltage,frequency change guideline,incorrect dvs overhead model,dvs transition overhead model,modern high-performance microprocessors,dynamic voltage scaling,pll,accurate dvs overhead model,energy overhead,modern dvs setup,modern dvs,dvfs,dvs overhead model,dvs overhead model accuracy,accurate modeling,dc-dc converter,phase locked loops,phase lock loop,inductors,capacitors,power efficiency | Electrical efficiency,Dynamic voltage scaling,Phase-locked loop,Computer science,Voltage,Microprocessor,Converters,Real-time computing,Electronic engineering,Frequency scaling,Energy consumption,Embedded system | Conference |
ISBN | Citations | PageRank |
978-1-4244-8588-8 | 63 | 1.97 |
References | Authors | |
12 | 4 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Jaehyun Park | 1 | 490 | 59.69 |
| Donghwa Shin | 2 | 396 | 32.34 |
| Naehyuck Chang | 3 | 1985 | 185.85 |
| Massoud Pedram | 4 | 7801 | 1211.32 |