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Ecma TC38 – TG2May 2007

Kevin Fisher – Intel Corp

TC38 – TG2 Convenor

Ecma/TC38-TG2/2007/024Ecma/TC38/2007/034

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Background

2003: Ecma issued the world’s first environmentally conscious design standard (ECMA-341) for the ICT & CE industries

• Aimed at the designer, provides pragmatic advice on how to reduce the environmental footprint of a product at design stage.

ECMA-341 is incomplete when it comes to the energy efficiency section

• A significant gap for the ICT & CE industry is how to measure the true energy efficient performance of a given product.

• ECMA-341 now adopted by IEC TC108 as IEC 62075 (FDIS in the summer). EE part still incomplete.

TC38-TG2 formed with a scope of “Energy Efficiency”

• The initial focus of the Ecma work is at a system level for desktop and notebook (in AC mode) computers.

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Measuring Energy Efficient Performance

Fridge Energy Efficient Performance =

Cubic Capacity

Energy used to get it cold + energy use to sustain temperature over a given time

Computer Energy Efficient Performance

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Definitions

Energy Efficient Performance (EEP)• The intersection of product performance, capabilities and energy

efficiency

Performance• Compute throughput and responsiveness at a component or

system level.  

Capabilities• Is a feature or set of features that enhances usability and/or

experience of a Product

Energy Efficiency• The AC Energy consumed while executing a duty cycle measured

in KW-Hr.• Use power more efficiently during periods of activity

• Use as little power as possible when not active

• Components/devices should drop into low power modes as often and as deep as possible

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Car Analogy

Energy Efficiency = Litres/Kilometre

Capabilities = How many seats, A/C, electric windows, heated seats etc

Classifications: A motorbike and a Smart car are very energy efficient, but not great for sales people (unless selling pizzas!) or a family of six

A 4 X 4 is great for off road, butinefficient for the school run

Performance = How fast it accelerates & how fast it goes.

The Information Super Highway has no speed limit. Performance is even more relevant

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Today’s energy regulation for computers

Puts arbitrary limits on energy consumed in different power states

• Sleep state

• Idle mode

Is this good for

• Innovation? Limits technology to do more while in sleep

• The environment? Does it really encourage more efficient designs and user behaviour? Fails to account for 2 out of the 3 tenets of energy efficiency.

A more holistic approach is required

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Concept

Pow

er

Time

off sleep

idle

active

offsleep

idle

active

Which one is more energy efficient?Hint: Add up the total area of the graphs

Note: This is simplified conceptual example and represents a sum of activities in each state

Today Future

Max power

regulated

Max power

regulated

Metric on the total energy consumed

in all states, adjusted for performance

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TC38-TG2 Details

Membership

• Industry: AMD, Apple, Dell, HP, IBM, Intel, Lexmark, Microsoft, NVIDIA, Sony, Toshiba, VIA Technologies

• EU Gov: AEA Technology (UK), EC consultant

• EPA Consultants: ECOS, ICF, LBNL, Terra Novum

Meetings

• Every two weeks via teleconference

• Ad hoc FTF. Next planned June 19 / 20 in Washington DC

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TC38 – TG2 Standard

Three components to the standard

• System classification

• Compute performance and capability measurements

• Energy consumption over a defined workload / duty cycle per classification

Overview of the Ecma Standard

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Benchmark and Milestones

BAPCo (http://www.bapco.com/) selected as vendor for Benchmark Software

• EECoMark™ under development

Ecma standard provides criteria for BM to comply + approval process

Milestones

• Standard ready for approval at December General Assembly

• Energy Star Tier II January 2009

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Users of Methodology

Ecma developing the test methodology

• Standardises test process and results reporting enables comparison of results

• Does not provide pass / fail criteria (e.g. limits)

Users

• US EPA for Energy Star (ES has partnership agreements with Asian, N. & S. American and European nations)

• EU for EuP directive

• Other countries: Japan Top-runner?

• End users (IT managers etc)

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Conclusions

Measuring the EEP of a computer is exponentially more complicated than that of a fridge

• Ecma developing test methodology supported by a benchmark (BAPCo developing EECoMark in parallel)

• EPA is initially the primary target for the work, but is just one user

• Broad industry and regulator (EPA and EC) support for the work

Imagine: A computer that goes to sleep in-between key strokes!

This may not be possible, however the Ecma methodology is designed to give the innovative power

back to the designer to at least allow him to try!