Welcome To The
Third Workshop on Energy Efficient Design
Karthick Rajamani and John Carter
San Jose, California
© 2011 IBM Corporation
Program Committee
Murali Annavaram, USC
Pradip Bose, IBM
David Brooks, Harvard
Jichuan Chang, Hewlett-Packard
Trishul Chilimbi, Microsoft
Xiaobo Fan, Google
Sudhanva Gurumurthi, Virginia
Benjamin Lee, Duke
Tao Li, UFL
Vijay Reddi, AMD
Karsten Schwan, GATech
Xiaorui Wang, Tennessee
Thomas Wenisch, Michigan
Program Chairs
John Carter, IBM
Karthick Rajamani, IBM
Additional Reviewers
Liqun Cheng
Marisabel Guevara
Mark Hennecke
Michael Lyons
David Meisner
Steven Pelley
Seng Oon Toh
Weidan Wu
© 2011 IBM Corporation
10 talks from reviewed papers in 4 sessions
Open-mike discussion on Green Computing
© 2011 IBM Corporation
Welcome and Introduction
Memory System
• Janani Mukundan – EASE: Energy-Aware Self-Optimizing DRAM
Chang Bae – Energy-aware Memory Management through Database Buffer Control
Group discussion
• Kevin Skadron – Reducing Power and Area by Interconnecting Memory Controllers to
Memory Ranks with RF Coplanar Waveguides on the Same Package
Amirali Baniasadi – Time-based Snoop Filtering in Chip Multiprocessorsynamic Power
Redistribution in Failure Prone CMPs
Ciprian Seiculescu – CCNoC: On-Chip Interconnects for Cache-Coherent Manycore Server
Group discussion
Break for Lunch
© 2011 IBM Corporation
Agenda Continued
Open-Mike Discussion: Green Computing Challenges
Data Center
Christopher Stewart – Power Provisioning for Diverse Datacenter Workloads
Ozlem Bilgir – Exploring the Potential of CMP Core Count Management on Data Center
Energy Savings
Group Discussion
Technology and Systems
• Timothy Miller - Mitigating the Effects of Process Variation in Ultra-low Voltage Chip
Multiprocessors using Dual Supply Voltages and Half-Speed
Youhuizi Lee – The Seventh Cell of a Six-Cell Battery
Andrew Targhetta - An Energy Efficient Datapath for Asymmetric Cryptography
© 2011 IBM Corporation
Green Computing Challenges
© 2011 IBM Corporation
Green Computing Challenges
 Demand for computing capability only growing => Peta->Exa, Ubiquitous computing,
Energy cost rivals IT equipment cost
Server energy expense grew 31% over last five years
 Challenge to lower power but maintain reliable operations
CMOS scaling limitations
Availability vs Efficiency
 Productivity vs Efficiency
Software bloat – modularity for rapid development over efficiency
Loss of insight into physical resource usage
 Barriers to new technology adoption
Widespread deployment of and dependence on current technologies
Cost of technology development - fewer players with consolidation?
 Challenge to utilize renewable energy sources to power IT
Variability in energy availability and energy storage technology limitations
Inefficiencies in and higher cost of renewable energy production
© 2011 IBM Corporation
Have a great week !
© 2011 IBM Corporation