Green Computing

Green Computing

Johan Lilius

January 19, 2012

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Introduction

Contents

1 Introduction

2 The economics of Data-Centers: Why Power Matters

3 Energy-proportional computing

4 Servers built on mobile processors

5 Summary

6 Bibliography

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Introduction

What is Green-Computing (Green-ICT)?

Green Computing refer to 2 different things

1

2

Reducing energy consumption of ICT

Using ICT to reduce energy consumption

Goal: reduce carbon footprint

This presentation : Reducing energy consumption of ICT

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Introduction

Green-Computing aspects [11]

Start

1992 EPA Energy star rating

5 issues (2009)

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2

3

4

5

Johan Lilius

E-Waste

Data-centers and Servers

PCs, Monitors and Workstations

Software

Telecommuting

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Introduction

E-Waste

Recycling issue

estimates that over 25 billion computers, televisions, cell

phones, printers, gaming systems, and other devices

have been sold since 1980,

2 million tons of unwanted electronic devices in 2005

alone,

with only 15 to 20 percent being recycled

Material is transfered to developing countries

Clear environmental hazards

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Introduction

Data centers & Servers

Energy efficiency

• 

Power draw of computing clusters is becoming an increasing fraction of

their cost1

Power consumption is an issue

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9/3/10&

Johan Lilius

The density of the datacenters that house them is in turn limited by

Driver money, not and cool 10–20 kW of power per rack and up to

their ability to supply environmental aspects :-(

10–20 MW per datacenter

Future datacenters may require as much as 200 MW, and datacenters

are being constructed today with dedicated electrical substations to

feed them.

1Kenneth

G. Brill: “The Invisible Crisis in the Data Center: The Economic...