Embedded Systems Conference
Breaking News
Comments
Newest First | Oldest First | Threaded View
siddharthguha
User Rank
Author
re: Opinion: Automated power reduction - buyer beware
siddharthguha   4/25/2012 8:48:23 PM
NO RATINGS
Hi Frank, Thanks for your opinion. Automatic power reduction solutions are capable of improvements based on the information captured in the design (and simulation. CPF/UPF etc). In addition, by analyzing power graphs, memory operation graphs, enable scorecards etc designers can make architectural level judgments and improvements, whose intent in not captured in the design. Such exploration capabilities, tied with good power estimation capabilities can help designers to do several "what if" analysis and fine tune their RTL for power very effectively. Regards Siddharth

ARanjan
User Rank
Author
re: Opinion: Automated power reduction - buyer beware
ARanjan   4/21/2012 8:04:19 AM
NO RATINGS
As Engineering Director for Calypto’s PowerPro product, I’d like to add a few comments to Siddharth's blog. Let’s not forget what the “A” stands for in EDA. Automation is what allows engineers to design faster, smaller and lower power products with less time. I do agree with Siddharth that designers want control on what to patch in their design but they also want RTL power optimizations to be presented to them versus just showing activity charts and letting them figure what to do with those numbers. Message from engineers is pretty consistent, focus on finding more opportunities for power saving automatically since this produces results in hours versus weeks for guided-only flows. Of course it’s important to have both automatic and guided flows since they both have a place in optimizing for power. A "true" automated solution should take away the need for RTL maintenance from the user by taking care of all the requirements of RTL design (ECO, verification, integration to back-end flows etc). There is a good value in RTL Power Analysis as it lets you spot places/blocks where to focus. Calypto’s products also focus on showing the engineer the specific RTL optimization which will yield possible savings, automatic then takes care of the rest. For a good read on methodology leveraging automatic and guided flows read the DATE 2012 conference paper "PowerAdviser: An RTL Power Platform For Interactive Sequential Optimizations" where the user has shown how the advice from guided mode can help drive automatic optimizations to achieve more power savings.

old account Frank Eory
User Rank
Author
re: Opinion: Automated power reduction - buyer beware
old account Frank Eory   4/17/2012 5:44:32 PM
NO RATINGS
I agree. Push button methods are great for things like automatic clock gating, but it's difficult to imagine a tool that could understand your design and its application modes well enough to recommend architectural-level things you might have missed -- for example, creating a new power domain for a chunk of logic that can be shut off in certain modes. At least for now, humans are necessary for some of those system-level trade-offs and analyses.

BrianBailey
User Rank
Author
re: Opinion: Automated power reduction - buyer beware
BrianBailey   4/17/2012 3:25:28 PM
NO RATINGS
It seems that you are also pointing out that carefully considered system-level power optimization can provide power savings that automated methods could never find.



Radio
LATEST ARCHIVED BROADCAST
As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Like Us on Facebook
Special Video Section
The LTC®6363 is a low power, low noise, fully differential ...
Vincent Ching, applications engineer at Avago Technologies, ...
The LT®6375 is a unity-gain difference amplifier which ...
The LTC®4015 is a complete synchronous buck controller/ ...
10:35
The LTC®2983 measures a wide variety of temperature sensors ...
The LTC®3886 is a dual PolyPhase DC/DC synchronous ...
The LTC®2348-18 is an 18-bit, low noise 8-channel ...
The LT®3042 is a high performance low dropout linear ...
Chwan-Jye Foo (C.J Foo), product marketing manager for ...
The LT®3752/LT3752-1 are current mode PWM controllers ...
LED lighting is an important feature in today’s and future ...
Active balancing of series connected battery stacks exists ...
After a four-year absence, Infineon returns to Mobile World ...
A laptop’s 65-watt adapter can be made 6 times smaller and ...
An industry network should have device and data security at ...
The LTC2975 is a four-channel PMBus Power System Manager ...
In this video, a new high speed CMOS output comparator ...
The LT8640 is a 42V, 5A synchronous step-down regulator ...
The LTC2000 high-speed DAC has low noise and excellent ...
How do you protect the load and ensure output continues to ...