1. Exploring The Green Blade Ken Lutz University of California, Berkeley LoCal Retreat, June 8, 2009

2. Motivation 2 To Realize An Energy Responsive Blade and Cluster –Consolidate Load within the cluster –Turn OFF Underutilized Blades –Explore a smaller unit of replication –Run on Battery providing Demand Response Platform for System Level Experiments

3. 3 Server Power Consumption Maybe we can explore a new data point

4. ATOM Blade Explore a New Building Block Inexpensive ($100) and Low Power (25W) Based on the Intel ATOM 330 CPU –Dual Core – 45nm –8W MAX Smaller Unit of Replication so expect a cluster will have more units to do the same work Fine Grain Control 4

5. Energy Responsive Node 5 Node On/OFF AC ON/OFF Battery Backup UPS Controller ATOM

6. LoCal ATOM Cluster (4) ATOM Motherboards – Almost 1U –160MB Disk Drive –10/100 Ethernet –2GB DRAM –USB etc –DC-DC converter with UPS switch and Battery Where is the power going? (4) ATOM Motherboards – Almost 1U –160MB Disk Drive –10/100 Ethernet –2GB DRAM –USB etc –DC-DC converter with UPS switch and Battery Where is the power going? 6

7. Room for Improvement… 7 TV Encoder Clock Generator Audio Codec Dc-DC Converter Bridge Chip Intel I/O controller hub Chip ATOM CPU

8. No Heat Sinks 8 Not Steady State

9. Idle Power 9 CPU Power Control Schemes may have a limited effect

10. Conclusion The goal is to explore a new data point in cluster design Small nodes allow fine grained load distribution Ability to turn nodes off Explore limited but distributed energy storage Learn about the system level problems 10