Get documents about "Ecma TC38 – TG2 May 2007
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Ecma/TC38-TG2/2007/024
Ecma/TC38/2007/034
Ecma TC38 – TG2
May 2007
Kevin Fisher – Intel Corp
TC38 – TG2 Convenor
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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
Performance = How fast it accelerates & how fast it goes.
Energy Efficiency = Litres/Kilometre
Capabilities = How many seats, A/C,
electric windows, heated seats etc
The Information Super Highway has no speed limit. Performance
is even more relevant
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, but
inefficient for the school run
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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
Which one is more energy efficient?
Hint: Add up the total area of the graphs
Max
power
Today regulated Future
Metric on the total
Power
active energy consumed active
in all states,
adjusted for
Max performance idle
power idle
regulated
sleep
off sleep off
Time
Note: This is simplified conceptual example and represents a sum of activities in each state
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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!
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