Project GreenLight - DC Modular Direct Current Datacenters for Improved Energy Efficiency

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					Project GreenLight - DC
Modular Direct Current Datacenters for Improved Energy Efficiency

Global CyberBridges 2009 Calit2 workshop July 1st, 2009

Dr. Greg Hidley California Institute for Telecommunications and Information Technology, UCSD

IPCC Recommends 25-40% GHG Reduction Below 1990 Levels by 2020
• On September 27, 2006, Governor Schwarzenegger signed California the Global Warming Solutions Act of 2006 – Assembly Bill 32 (AB32) – Requires Reduction of GHG by 2020 to 1990 Levels
– 15% Reduction from 2008 Levels – 4 Tons of CO2-equiv. for Every Person in California

• The European Union Requires Reduction of GHG by 2020 to 20% Below 1990 Levels (12/12/2008) • Australia has Pledged to Cut by 2020 its GHG Emissions 5% from 2000 Levels via the Cap &Trade Scheme (12/15/08) • Neither the U.S. or Canada has an Official Target Yet – President Elect Obama Has Endorsed the AB32 2020 Goal – House Bill passed Friday targeting 17% below 2005 levels and 83% reductions by 2050

ICT is a Critical Element in Achieving Countries Greenhouse Gas Emission Reduction Targets
Applications of ICT could enable emissions reductions of 7.8 Gt CO2e in 2020, or 15% of business as usual emissions. But it must keep its own growing footprint in check and overcome a number of hurdles if it expects to deliver on this potential.

The Global ICT Carbon Footprint Roughly the Same as the Aviation Industry Today

But ICT is Growing at 6% Annually!

ICT Industry is Already Acting to Reduce Carbon Footprint

Electricity Usage by U.S. Data Centers: Emission Reductions are Underway

Source: Silicon Valley Leadership Group Report July 29, 2008

The NSF-Funded GreenLight Project Giving Users Greener Compute and Storage Options
UCSD Structural Engineering Dept. Conducted Sun MD Tests May 2007


Measure and Control Energy Usage:
– – – – – Sun Has Shown up to 40% Reduction in Energy Active Management of Disks, CPUs, etc. Measures Temperature at 5 Levels in 8 Racks Power Utilization in Each of the 8 Racks Chilled Water Cooling Systems

$2M NSF-Funded GreenLight Project

UCSD (Calit2 & SOM) Bought Two Sun MDs May 2008 Source: Tom DeFanti, Calit2; GreenLight PI

The GreenLight Project: Instrumenting the Energy Cost of Computational Science
• Focus on 5 Communities with At-Scale Computing Needs:
– – – – – Metagenomics Ocean Observing Microscopy Bioinformatics Digital Media

• Measure, Monitor, & Web Publish Real-Time Sensor Outputs
– Via Service-oriented Architectures – Allow Researchers Anywhere To Study Computing Energy Cost – Enable Scientists To Explore Tactics For Maximizing Work/Watt

• Develop Middleware that Automates Optimal Choice of Compute/RAM Power Strategies for Desired Greenness • Partnering With Minority-Serving Institutions Cyberinfrastructure Empowerment Coalition
Source: Tom DeFanti, Calit2; GreenLight PI

Threat to CI Deployment—CSE Research Needed on How to Deploy a Green CI MRI
• Computer Architecture
– Rajesh Gupta/CSE

• Software Architecture
– Amin Vahdat, Ingolf Kruger/CSE

• CineGrid Exchange
– Tom DeFanti/Calit2

• Visualization
– Falko Kuster/Structural Engineering

• Power and Thermal Management
– Tajana Rosing/CSE

• Analyzing Power Consumption Data
– Jim Hollan/Cog Sci

• Direct DC Datacenters
Source: Tom DeFanti, Calit2; GreenLight PI
– Tom Defanti, Greg Hidley

GreenLight Project: Putting Machines To Sleep Transparently
Rajesh Gupta, UCSD CSE; Calit2
Network interface

Secondary processor Management software Main processor, RAM, etc Laptop

Network interface

Low power domain Peripheral

IBM X60 Power Consumption
Power Consumption (Watts)
20 18 16 14 12 10 8 6 4 2 0

Somniloquy Enables Servers to Enter and Exit Sleep While Maintaining Their Network and Application Level Presence

16W (4.1 Hrs)
11.05W (5.9 Hrs)

0.74W (88 Hrs)
Sleep (S3)

1.04W (63 Hrs)
Somniloquy Baseline (Low 10 Power) Normal

Virtualization at Cluster Level for Consolidation and Energy Efficiency
Source: Amin Vadhat, CSE, UCSD

Original Service


• Fault Isolation and Software Heterogeneity, Need to Provision for Peak Leads to: – Severe Under-Utilization – Inflexible Configuration – High Energy Utilization • Usher / DieCast enable: – Consolidation onto Smaller Footprint of Physical Machines – Factor of 10+ Reduction in Machine Resources and Energy Consumption

Virtualized Service

UCSD is Installing Zero Carbon Emission Solar and Fuel Cell DC Electricity Generators
UCSD 2.8 Megawatt San Diego’s Point Loma Wastewater Treatment Plant Produces Waste Methane Fuel Cell Power Plant Uses Methane
Available Late 2009

2 Megawatts of Solar Power Cells Being Installed

One-line Diagram of Power Distribution

Zero Carbon GreenLight Experiment: Direct DC-Powered Modular Data Center
• Concept—Avoid DC to AC to DC Conversion Losses
– – – – Computers Use DC Power Internally DC Fuel Cell 2800kWatts Solar and Fuel Cells Produce DC Sun Box <200kWatt Both Plug into the AC Power Grid Can We Use DC Directly (With or Without the AC Grid)?

• DC Generation Can Be Intermittent
– Depends on Source – Solar, Wind, Fuel Cell, Hydro – Can Use Sensors to Shut Down or Sleep Computers – Can Use Virtualization to Halt/Shift Jobs

• Experiment Planning Just Starting
– Collaboration with Sun and LBNL – NSF GreenLight Year 2 and Year 3 Funds
Source: Tom DeFanti, Calit2; GreenLight PI

ARRA Funding Opportunity
• • Recovery Act: Energy Efficient Information and Communication Technology UCSD Proposal: Renewable, Bio-Fueled 400 VDC Modular Data Center
– PI Tom DeFanti, UCSD, Calit2 – CoPIs Rajesh Gupta, Tajana Rosing, Greg Hidley – Partners – NSF funded GreenLight investigators – Lawrence Berkeley National Laboratory – Sun Microsystems, Intel, Delta – EPRI, Direct Power Technologies – Coordination with UCSD Strategic Initiatives Office and Facilities Management


Goals: At UCSD East Campus Utility Plant
– – – – – Establish renewable energy facility with Fuel Cell, Biomass generator, and PVs Develop Smart Grid distribution of above DC sources providing 5 9’s reliability Develop all DC Sun MD with DC powered computers and networking equipment Develop novel cooling improvements using reduced loads and virtualization Develop novel energy efficiency improvements using reduced loads and virtualization

Energy Efficiency Improvements Anticipated
• We anticipate energy efficiency improvements as follows
– Reductions in all levels of energy chain from FC to servers using 400VDC – Fuel Cell Inverter (DC to AC) – DC-DC conversion losses (adjust to grid voltage) – 480VAC distribution line losses – 480VAC to 208VAC or 120VAC step down losses – UPS (AC to DC to charge batteries and back to AC) conversion losses – PDU’s (AC voltage stepped down to server requirements) – Inside Power Supplies (rectification and transformation) – Reduction in cooling loads given heat dissipation of conversions – Anticipate reduction of power utilization by 25% or better (power and cooling) – Anticipate DCiE of 80% or better, cooling efficiencies of 33% or better – Data Center Infrastructure Efficiency (DCiE)

– DCiE = IT (useful work) power / total facility power
– Power Usage Effectiveness (PUE, the inverse of DCiE)

– PUE = total facility power / IT (useful work) power
– DCiE of 80% is the same as PUE of 1.25 … implies

– 200kw Sun MD would use 160kw for computers and 40kw for cooling and power distribution losses

2.8MW FCE Fuel Cell Installation

Toward “Zero Carbon” ICT Green Cloud Computing and Storage
• Purchasing Green Power Locally is Expensive with Significant Transmission Line Losses
– Demand for Green Power Within Cities is Growing Dramatically – ICT Facilities Don’t Need To Be Located In Cities

• But Most Renewable Energy Sites are Very Remote and Impractical to Connect to Electrical Grid
Can be Easily Reached by an Optical Network Provide Independence from Electrical Utility Savings in Transmission Line Losses (Up To 15% Alone) Plus Carbon Offsets Can Pay for Moving ICT Facilities to Renewable Energy Site • Calit2 is Discussing Partnering with Canada – Move a GreenLight Facility to Hydro Site in British Columbia, – Link by 10Gbps Optical Fiber to Calit2—Offer to Remote Users
Source: Bill St. Arnaud, CANARIE, Canada

– – – –

Coupling AARNet - CENIC/PW - CANARIE Optical Nets: An Australian-U.S.-Canada Green Cloud Testbed

Toward Zero Carbon ICT

Application of ICT Can Lead to a 5-Fold Greater Decrease in GHGs Than its Own Carbon Footprint While the sector plans to significantly step up the energy efficiency of its products and services, ICT’s largest influence will be by enabling energy efficiencies in other sectors, an opportunity that could deliver carbon savings five times larger than the total emissions from the entire ICT sector in 2020.
--Smart 2020 Report

Major Opportunities for the United States*
– – – – Smart Electrical Grids Smart Transportation Systems Smart Buildings Virtual Meetings
* Smart 2020 United States Report Addendum

“It Will Be the Biggest Single Peacetime Project Humankind Will Have Ever Undertaken”

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