Barry Pangrle

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Barry Pangrle is a power architect. He is based in Silicon Valley.

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Shaking Up The Green500
By Barry Pangrle - 17 Jan, 2013 - Comments: 0

Barry Pangrle Last September, I wrote about the efficiency of IBM’s Power7+ architecture in my blog. IBM’s Sequoia supercomputer (a BlueGene/Q system) this past June had just shot to the top of the Supercomputing Top500 chart, clocking in at 16.32 petaflop/s on the Linpack benchmark. Other systems built around the IBM BlueGene/Q, Power BQC 16C 1.60GHz, Custom were also dominating the top o... » read more

Thinking Small
By Barry Pangrle - 06 Dec, 2012 - Comments: 0

By Barry Pangrle “But I am not afraid to consider the final question as to whether, ultimately—in the great future—we can arrange the atoms the way we want; the very atoms, all the way down! What would happen if we could arrange the atoms one by one the way we want them (within reason, of course; you can't put them so that they are chemically unstable, for example). — Richard Feynman, ... » read more

ARM’s big.LITTLE Concept
By Barry Pangrle - 08 Nov, 2012 - Comments: 0

By Barry Pangrle ARM EVP Simon Segars gave the opening keynote address at last week’s ARM TechCon in Santa Clara, California. The big announcement was the new ARM Cortex-A53 and Cortex-A57 processors that will operate in ARM’s “big.LITTLE” configuration. I wrote a bit about big.LITTLE in my blog last year on Innovation at the Core. ARM’s big.LITTLE concept is based on using a smal... » read more

Return To Claremont
By Barry Pangrle - 11 Oct, 2012 - Comments: 0

By Barry Pangrle Intel’s Gregory Ruhl gave an update presentation on Intel’s Claremont IA-32 near-threshold voltage (NTV) and wide dynamic range processor at Hot Chips 24. (I’ve also written an earlier article about Claremont here.) There are many challenges in building a part that operates across a broad range of voltages and Intel listed reduced ratios of on-current vs. off-current, re... » read more

IBM’s Power7+ Processor
By Barry Pangrle - 12 Sep, 2012 - Comments: 0

By Barry Pangrle Hot Chips 24 was held Aug. 27-29 with tutorials on the first day and 30-minute technical presentations plus keynote addresses on the second and third days. There were a lot of great presentations and Hot Chips is definitely one of my favorite conferences. So out of all of the presentations, why did I choose IBM’s Scott Taylor’s on Power7+? Well, it’s likely that I’l... » read more

AMD’s Bobcat Processor
By Barry Pangrle - 09 Aug, 2012 - Comments: 0

Barry Pangrle The International Symposium on Low Power Electronics and Design (ISLPED) was held last week in Redondo Beach, California. There were many good presentations and keynote addresses and a topic that’s near to my heart, near-threshold voltage computing, was often discussed along with how best to (or not) handle variability. One paper out of many that caught my attention was The ... » read more

Dealing With Variability
By Barry Pangrle - 12 Jul, 2012 - Comments: 0

By Barry Pangrle Process, voltage and temperature, a.k.a. PVT, are well known to designers who are working to complete “signoff” for their designs. In order for a design to be production-ready, it’s necessary to ensure that the design is going to yield parts at a sufficiently high percentage for profitability and that it will still operate within the expected variation of the process and... » read more

Efficiency Vs. Accuracy
By Barry Pangrle - 14 Jun, 2012 - Comments: 0

By Barry Pangrle If all you have is a hammer, everything looks like a nail. I wrote an article, Power vs. Accuracy, last year that discussed tradeoffs between power and accuracy for different applications. It turns out that for a number of processing applications, if every bit isn’t perfect, the impact on the final result might not be all that great. Anyone performing financial analytical... » read more

Intel’s Hot New Tri-Gate Processors
By Barry Pangrle - 10 May, 2012 - Comments: 0

By Barry Pangrle Intel announced its newest third-generation Core processors on April 23rd. There has been much anticipation surrounding these new chips from Intel, largely because of their new 22nm tri-gate process technology used to fabricate these devices. Figure 1, from the presentation entitled, “Intel’s Revolutionary 22nm Transistor Technology,” by Mark Bohr and Kaizad Mistry, s... » read more

FinFET Vs. Tri-Gate
By Barry Pangrle - 05 Apr, 2012 - Comments: 0

By Barry Pangrle A large portion of the Common Platform Technology Forum, recently held in Santa Clara, was dedicated to presentations about 14nm process technologies and FinFETS. If you missed the event and are interested, many of the presentations are available from a link off of the Common Platform home page. Dick James wrote a nice article about GlobalFoundries’ claim that its FinFETS ar... » read more

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