Transcript ECMA-383

ECMA-383
• Kevin Fisher, Convenor Ecma TC38-TG2
Representing BSI UK
Employee Intel Corp
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Agenda
• Background / History
• ECMA-383 1st edition (Plan A)
• Issues with Plan A
• Plan B proposal
• Challenges with Plan B
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Background and History
• Ecma International: an industry association
founded in 1961, dedicated to standardization of
ICT & CE products
 http://www.ecma-international.org/
 Organisation membership from Asia, Europe and America
 Companies, Research institutes, Single person companies
• 2003: Ecma issued the world’s first
environmentally conscious design standard
(ECMA-341)
 Aimed at the designer, provides pragmatic advice on how to
reduce the environmental footprint of an ICT/CE product at
the design stage.
 ECMA-341 now available as IEC 62075.
• Neither of these standards provide energy
measurement criteria
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Ecma TC38-TG2
•
In Q4/05, Ecma set up Task Group 2 within Technical Committee 38
to create energy [efficiency] standards
 Initial scope was desktop and notebook computers
 Kevin Fisher of Intel is the convenor
•
In order to ensure maximum transparency and a wide adoption of the
work, Ecma agreed to the participation of non-Ecma member companies
•
Participants include:
 IBM, HP, Dell, Toshiba, Gateway, Sony
 Apple, Microsoft, Novell
 Lexmark, Ricoh, Océ
 Intel, AMD, nVidia, VIA technologies
 Ecos, ICF, ITI, LBNL, Terra Novum
•
Observers include:
 EPA (US), EC (EU), CSC (China)
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Energy environment for
Computers
• Voluntary and regulatory
 Energy Star, TopRunner, EuP Lot 6 etc.
• IEC 62301 exists today for measuring off mode.
• The goal for Ecma TC38-TG2 was from the outset to determine a
more holistic approach to measuring energy [efficiency] of
computers.
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Plan A
• Ecma TC38-TG2 embarked on Plan A
• Three vectors required:
 Energy consumption (annualised)
 Capabilities
 Performance
• Require a benchmark to:
 measure performance
 enumerate capabilities
 run workloads for measuring Active energy consumption
• Require a set of criteria for compliant benchmarks
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Rational for the 3 vectors
in Plan A
The Computer vs. the Motorbike
Performance = How fast it accelerates & how fast it goes.
• Energy Efficiency = Litres/Kilometre
• Capabilities = How many seats, A/C, electric
windows, heated seats etc
Fitness for purpose and informed choice
A motorbike is very energy efficient, but not great for sales
people (unless selling pizzas!) or a family of six
Which vehicle has the highest quality: A hybrid energy efficient
family saloon or a Land Rover when driving off road?
A 4 X 4 is great for off road, but inefficient for the school run
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Measuring Energy,
Performance and Capabilities
• Classifications:
 Computer type: Notebook or Desktop
 Workloads: Office productivity or Media Rich (others such as
3D or HD to be defined)
• Duty cycle: How long is the machine doing work
vs. idle or sleep?
• Two key vectors: Power and Time
 Historical emphasis has been on Power. The new concept was
to place more emphasis on Time.
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Which one is more energy efficient?
Hint: Add up the total area of the graphs
Power
Today
Max
power
regulated
Future
Metric on the total
energy consumed
in all states,
adjusted for
performance
active
Max
power
regulated
off
idle
sleep
active
idle
sleep
off
Time
Note: This is simplified conceptual example and represents a sum of activities in each state
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Summary of the 1st edition
ECMA-383
•
Initial focus on Desktop and Portable Computers
•
Provides a consistent test methodology and reporting
structure
•
In support of the standard a benchmark is required
•
Three components:

UUT workload classification: Rich media or office productivity

Performance and capability measurement

Energy consumption per workload and defined duty cycle
1. Select the
appropriate
benchmark tool (6.3
and Annex A)
4. Select the
appropriate meter
(6.6 and Annex B)
2. Decide on the
classification of the
product (5.2 and 6.4)
5. Set up and run the
test (6.7 and Annex
C)
3. Decide on the Duty
Cycle to be used (6.5)
6. Record the results
(6.8 and Annex D)
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Benchmark Criteria
•
The 1st edition of the Ecma Standard does not specify THE benchmark.

•
It provides criteria that a self declared benchmark must comply with
“Criteria for a benchmark that can be self declared by its developer to
be used in support of the Ecma Standard: ECMA-383 1st Edition”
 A benchmark developer would self declare compliance, inform Ecma
who would add a link to their benchmark on the Ecma web site.
 ECMA-383 provides the relevant Ecma url’s
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Problems with Plan A
•
The link with a benchmark has been problematic

Criteria for BM compliance complicated

Approval process open to criticism
•
Overheads to run the standard and benchmark high

Costs associated with BM purchase and renewal

Test time in excess of 1 hour
•
Performance vector complicated

How do you define Performance?

Difficulty in reaching agreement on performance measurement vector
(e.g. the benchmark score)

Performance benchmarks already exist today
•
Simple enumeration of Capabilities does not allow for
product to product comparisons
•
Three vectors as output: How do they all relate?
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Plan B required
• Goals of plan B
 Find replacement criteria for Performance to enable energy consumption
comparisons of like machines
 Reduce / remove the link to a benchmark
 Provide a standard that can be used to measure power consumption in
all energy states and report energy consumption over a given period of
time (e.g. annualised)
• Timescales for Plan B
 Be ready for Ecma GA in December 2009
 Work in parallel with IEC TC108 WG Environment
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Plan B: The proposal
• Replace the Capability and Performance vectors used in Plan A
with a Categorisation vector
 Enable the comparison of energy consumption of like for like machines
 Categorisation details need to be defined. Examples would be:
• Processor: # cores, # physical processors, cache etc
• Audio: s/n ratio, # channels etc.
• Graphics: size of memory, GPU capabilities etc
• Memory: How big, how fast
• Storage: Number and size of devices
• Enable the standard to measure power in any or all power states:
e.g. Off, Sleep, idle, active
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Plan B: The Benefits
• Removed the link with a BM (however see next slide for Active
power discussions)
• The standard becomes simpler, faster and cheaper for user
• More holistic standard for energy measurement
 User can choose to measure power / energy in any power state, or:
 Report overall energy consumption over a given period of time, and:
 Compare like machines
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Plan B: The challenges
• Categorisation: Not a new concept but will require much debate
and comparison of ideas
• Energy consumption in Active mode, two arguments:
 On an annualised basis, the energy consumed in active is negligible
therefore it could be considered as idle
 In the coming years, idle time will reduce and so active energy will
become more important
• If active energy mode included: What workload to run to
demonstrate real world active mode energy consumption?
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Plan B: Next steps
• Define a roadmap for December completion
 Categorisation and Active energy are risk factors
• Solicit ideas from all members on Categorisation
techniques
• Agree how to handle Active power
• Start basics of the standard (definitions, test flow
etc)
• Agree a working process between IEC and Ecma
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Comparison Plan A to B
Plan A
Benchmark
Criteria
Performance
score
ECMA-383 Standard
1st Edition
Benchmark
Energy
consumption
Problems
Benchmark
Test time
Performance definition
Three outputs
Capabilities
Plan B
Workload for
Active*
Plan B
ECMA-383 Standard
2nd Edition
System
Categorised
Energy
consumption in
any or all
power states
*If we include Active energy consumption in the 2nd edition
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Address
4.
?????
Ecma is driven purely by the will of its members
Thank you!
It is run by industry for industry, and is aware of your time and cost constraints
Proven system for getting things done right and on time
The know-how of the secretariat, GA and CC guides technical experts through
international standardization jungle
The Ecma process filters out non-commercial interests, resolves competitive
clashes which are not productive
The “fast track” by Ecma saves you time and money.
If you get three members together for a project, it can not be stopped by other
members
Ecma works readily on several competing solutions to the same problem
The development of an Ecma Standard takes (typically) no more than half the
time required
to develop a similar standard in any competing forum.
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