Palestra: Rede de Sensores sem fio para Monitorar o meio Ambiente.
Document Actions
Palestra: Power Management Approaches in Multi-Core Processor Systems
Palestra do Dr. Reinaldo A. Bergamaschi, na Série de Seminários 2008 da Pós-Graduação dia 20/06/2008 às 16h na sala 85 do IC2.
| What | Palestra |
|---|---|
| When |
20/06/2008 from 16:00 to 18:00 |
| Where | sala 85 - IC2 |
| Add event to calendar |
vCal
iCal
|
RESUMO Power has become the most dominant design constraint in advanced processor systems. Although power is ultimately dissipated in the processors, communications, and all remaining hardware devices (e.g., caches, memories, peripherals), the responsibility for overall power management is distributed across many layers through software and hardware. At the top-most level, the application layer has a direct impact on power. Depending on how it is coded and compiled, the application may benefit, or defeat lower-level power management schemes. Below the application, lie the Middleware and Operating System (OS) software. These two layers can also have a significant impact on power through either user-controlled knobs (e.g., power-saving modes in a laptop PC), or autonomic algorithms that keep track of the power and temperature of the chip. Below these layers sit the hardware layer, containing the processors and peripheral devices. In advanced systems, the hardware layer manages power both autonomically (in emergency cases) and under the control of the OS, Middleware, or Firmware running on on-chip embedded controllers. The knobs available to the hardware for controlling power are mainly voltage and frequency (dynamic voltage and frequency scaling - DVFS), but also microarchitectural knobs such as fetch and dispatch throttling. This talk will present an overview of power management techniques at these various layers, with special emphasis on those applicable on the hardware layer. It will present details on DVFS techniques used in multi-core processor systems for managing power under a power budget, as well as in thermal emergency cases. Reinaldo A. Bergamaschi is currently a consultant on computer-aided design and embedded systems. Prior to that, for 18 years he was a Research Staff Member at the IBM T. J. Watson Research Center, Yorktown Heights, NY, where he lead various projects on design automation, including high-level synthesis, RTL sign-off techniques, systems-on-chip, and power management tools. He graduated in Electronics Engineering from the Aeronautics Institute of Technology (ITA), São José dos Campos, Brazil, in 1982; he received a Master's degree from the Philips International Institute, Eindhoven, The Netherlands, in 1984; and a Ph.D. Degree in Electronics and Computer Science from the University of Southampton, Southampton, England, in 1989. Reinaldo is a Fellow of the IEEE and a Distinguished Member of the ACM.
VII WTD do IC 2012
