<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"
	xmlns:content="http://purl.org/rss/1.0/modules/content/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:atom="http://www.w3.org/2005/Atom"
	xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
		>
<channel>
	<title>Comments for Editor&#039;s Note</title>
	<atom:link href="http://chipdesignmag.com/lpd/sperling/comments/feed/" rel="self" type="application/rss+xml" />
	<link>http://chipdesignmag.com/lpd/sperling</link>
	<description>Making Semiconductor Architectures More Efficient</description>
	<lastBuildDate>Mon, 21 May 2012 22:00:50 +0000</lastBuildDate>
	<sy:updatePeriod>hourly</sy:updatePeriod>
	<sy:updateFrequency>1</sy:updateFrequency>
	<generator>http://wordpress.org/?v=</generator>
	<item>
		<title>Comment on Technology Crossover Ahead by Qi Wang</title>
		<link>http://chipdesignmag.com/lpd/sperling/2012/05/18/technology-crossover-ahead/comment-page-1/#comment-4310</link>
		<dc:creator>Qi Wang</dc:creator>
		<pubDate>Mon, 21 May 2012 22:00:50 +0000</pubDate>
		<guid isPermaLink="false">http://chipdesignmag.com/lpd/sperling/?p=584#comment-4310</guid>
		<description>Nice write-up. Most people will not link the recent news on NVM to low power but this article is able to bring people&#039;s attention on the right angle. There will also be a crossover from design philosophy point of view in that a small number of people may be interested in low power if it is only for environmental concerns but if economics is involved it will quickly become a different story. Having said that, nobody wants to see the cloud get heated up. It won&#039;t be comfortable for sure.</description>
		<content:encoded><![CDATA[<p>Nice write-up. Most people will not link the recent news on NVM to low power but this article is able to bring people&#8217;s attention on the right angle. There will also be a crossover from design philosophy point of view in that a small number of people may be interested in low power if it is only for environmental concerns but if economics is involved it will quickly become a different story. Having said that, nobody wants to see the cloud get heated up. It won&#8217;t be comfortable for sure.</p>
]]></content:encoded>
	</item>
	<item>
		<title>Comment on What Needs To Be Fixed by Qi Wang</title>
		<link>http://chipdesignmag.com/lpd/sperling/2012/04/20/what-needs-to-be-fixed/comment-page-1/#comment-4123</link>
		<dc:creator>Qi Wang</dc:creator>
		<pubDate>Mon, 23 Apr 2012 20:35:02 +0000</pubDate>
		<guid isPermaLink="false">http://chipdesignmag.com/lpd/sperling/?p=570#comment-4123</guid>
		<description>Very interesting article. This is becoming a very real challenge. It is like someone is given a pile of tools or tricks but without manuals on how to use it. All those &quot;power smart&quot; access of memories, IOs, functional units in firmware and software requires deep understanding of the hardware.</description>
		<content:encoded><![CDATA[<p>Very interesting article. This is becoming a very real challenge. It is like someone is given a pile of tools or tricks but without manuals on how to use it. All those &#8220;power smart&#8221; access of memories, IOs, functional units in firmware and software requires deep understanding of the hardware.</p>
]]></content:encoded>
	</item>
	<item>
		<title>Comment on What Needs To Be Fixed by Dan B</title>
		<link>http://chipdesignmag.com/lpd/sperling/2012/04/20/what-needs-to-be-fixed/comment-page-1/#comment-4097</link>
		<dc:creator>Dan B</dc:creator>
		<pubDate>Fri, 20 Apr 2012 20:26:39 +0000</pubDate>
		<guid isPermaLink="false">http://chipdesignmag.com/lpd/sperling/?p=570#comment-4097</guid>
		<description>As a long-time embedded developer trying to extend runtime on battery-powered systems, I have been continually frustrated with microcontroller kernels that don&#039;t support all the low power modes the device makers claim in their data sheets.  Actually realizing these microampere capabilities is very difficult to realize in actual practice--a lot of digging around under the hood, trying to make the compiler actually reach down and toggle that control register bit...and more often than not having to move on to the next module, and live with the poorer power spec.</description>
		<content:encoded><![CDATA[<p>As a long-time embedded developer trying to extend runtime on battery-powered systems, I have been continually frustrated with microcontroller kernels that don&#8217;t support all the low power modes the device makers claim in their data sheets.  Actually realizing these microampere capabilities is very difficult to realize in actual practice&#8211;a lot of digging around under the hood, trying to make the compiler actually reach down and toggle that control register bit&#8230;and more often than not having to move on to the next module, and live with the poorer power spec.</p>
]]></content:encoded>
	</item>
	<item>
		<title>Comment on Finite Math by Allan Campbell</title>
		<link>http://chipdesignmag.com/lpd/sperling/2012/04/13/finite-math/comment-page-1/#comment-4063</link>
		<dc:creator>Allan Campbell</dc:creator>
		<pubDate>Fri, 13 Apr 2012 21:05:14 +0000</pubDate>
		<guid isPermaLink="false">http://chipdesignmag.com/lpd/sperling/?p=564#comment-4063</guid>
		<description>The branch of mathematics that deals with large finite numbers best is discrete mathematics. Discrete mathematics can deal with large finite numbers but not with infinte numbers such as may arise in a divide-by-zero software interrupt routine. So, how to deal with this? Well, there is no year zero in Christian years, the numbering of Christian years goes directly back from the nominal one AD to one BC with no paradoxical year zero inbetween.

So, scrapping zero from the number line potentially surgically removes a potent cause of confusion and paradox.

Allan Campbell</description>
		<content:encoded><![CDATA[<p>The branch of mathematics that deals with large finite numbers best is discrete mathematics. Discrete mathematics can deal with large finite numbers but not with infinte numbers such as may arise in a divide-by-zero software interrupt routine. So, how to deal with this? Well, there is no year zero in Christian years, the numbering of Christian years goes directly back from the nominal one AD to one BC with no paradoxical year zero inbetween.</p>
<p>So, scrapping zero from the number line potentially surgically removes a potent cause of confusion and paradox.</p>
<p>Allan Campbell</p>
]]></content:encoded>
	</item>
	<item>
		<title>Comment on Performance Plus Lower Power by Gary Smith</title>
		<link>http://chipdesignmag.com/lpd/sperling/2011/10/06/performance-plus-lower-power/comment-page-1/#comment-3368</link>
		<dc:creator>Gary Smith</dc:creator>
		<pubDate>Sun, 09 Oct 2011 00:31:00 +0000</pubDate>
		<guid isPermaLink="false">http://chipdesignmag.com/lpd/sperling/?p=503#comment-3368</guid>
		<description>Ed,

Power isn&#039;t the problem, it&#039;s the specification.  Frequency (or gate count) is the problem.  Microprocessor companies that are bragging about the speed (multiple GHz) of their mobile processors are laughed at by the cell phone designers.</description>
		<content:encoded><![CDATA[<p>Ed,</p>
<p>Power isn&#8217;t the problem, it&#8217;s the specification.  Frequency (or gate count) is the problem.  Microprocessor companies that are bragging about the speed (multiple GHz) of their mobile processors are laughed at by the cell phone designers.</p>
]]></content:encoded>
	</item>
	<item>
		<title>Comment on The 3D Power Factor by Steve DB</title>
		<link>http://chipdesignmag.com/lpd/sperling/2011/08/26/the-3d-power-factor/comment-page-1/#comment-3276</link>
		<dc:creator>Steve DB</dc:creator>
		<pubDate>Fri, 26 Aug 2011 19:18:04 +0000</pubDate>
		<guid isPermaLink="false">http://chipdesignmag.com/lpd/sperling/?p=480#comment-3276</guid>
		<description>Ed,
the power problem will be alleviated to some extent because the amount of parasitics between die are greatly reduced. Less parasitics means that you need less drive current and that means less switching consumption. A recent paper given by Ansys shows that this will be one of the great benefits of TSV stacking.</description>
		<content:encoded><![CDATA[<p>Ed,<br />
the power problem will be alleviated to some extent because the amount of parasitics between die are greatly reduced. Less parasitics means that you need less drive current and that means less switching consumption. A recent paper given by Ansys shows that this will be one of the great benefits of TSV stacking.</p>
]]></content:encoded>
	</item>
	<item>
		<title>Comment on Regenerative Economics by ed</title>
		<link>http://chipdesignmag.com/lpd/sperling/2011/03/17/regenerative-economics/comment-page-1/#comment-3028</link>
		<dc:creator>ed</dc:creator>
		<pubDate>Mon, 21 Mar 2011 14:28:30 +0000</pubDate>
		<guid isPermaLink="false">http://chipdesignmag.com/lpd/sperling/?p=385#comment-3028</guid>
		<description>Lauro, as a number of systems engineers and architects have accurately pointed out, at 45nm and below all chips are low power. Almost all are multicore, as well, and an increasing number use multiple processors. Trying to deal with those implementations without emulation is much more time-consuming. What&#039;s particularly interesting is the trajectory for software engineers to use emulation, as well. The question now is whether they&#039;ll actually pay for it up front, which they haven&#039;t done in the past, or create a business model for cloud-based emulation services. --Ed</description>
		<content:encoded><![CDATA[<p>Lauro, as a number of systems engineers and architects have accurately pointed out, at 45nm and below all chips are low power. Almost all are multicore, as well, and an increasing number use multiple processors. Trying to deal with those implementations without emulation is much more time-consuming. What&#8217;s particularly interesting is the trajectory for software engineers to use emulation, as well. The question now is whether they&#8217;ll actually pay for it up front, which they haven&#8217;t done in the past, or create a business model for cloud-based emulation services. &#8211;Ed</p>
]]></content:encoded>
	</item>
	<item>
		<title>Comment on Regenerative Economics by Lauro Rizzatti</title>
		<link>http://chipdesignmag.com/lpd/sperling/2011/03/17/regenerative-economics/comment-page-1/#comment-3021</link>
		<dc:creator>Lauro Rizzatti</dc:creator>
		<pubDate>Thu, 17 Mar 2011 22:23:15 +0000</pubDate>
		<guid isPermaLink="false">http://chipdesignmag.com/lpd/sperling/?p=385#comment-3021</guid>
		<description>Ed,

can you, please, clarify your statement &quot;Emulation, which has been used for developing low-power chips...&quot;

&quot;Low-power&quot;?

Thanks,lauro</description>
		<content:encoded><![CDATA[<p>Ed,</p>
<p>can you, please, clarify your statement &#8220;Emulation, which has been used for developing low-power chips&#8230;&#8221;</p>
<p>&#8220;Low-power&#8221;?</p>
<p>Thanks,lauro</p>
]]></content:encoded>
	</item>
	<item>
		<title>Comment on Bad Posture: Icahn And Mentor by Kevin Cameron</title>
		<link>http://chipdesignmag.com/lpd/sperling/2011/02/09/bad-posture-icahn-and-mentor/comment-page-1/#comment-2982</link>
		<dc:creator>Kevin Cameron</dc:creator>
		<pubDate>Tue, 22 Feb 2011 03:38:20 +0000</pubDate>
		<guid isPermaLink="false">http://chipdesignmag.com/lpd/sperling/?p=373#comment-2982</guid>
		<description>I&#039;m with Icahn, the EDA business needs a shake-up. Mostly they seem to behave like Microsoft and Apple trying to trap users into inefficient and expensive methodologies that they can&#039;t break out of. I don&#039;t know where the R&amp;D money is going, but I have not seen anything very radical from any of the big EDA companies for years (maybe never).</description>
		<content:encoded><![CDATA[<p>I&#8217;m with Icahn, the EDA business needs a shake-up. Mostly they seem to behave like Microsoft and Apple trying to trap users into inefficient and expensive methodologies that they can&#8217;t break out of. I don&#8217;t know where the R&amp;D money is going, but I have not seen anything very radical from any of the big EDA companies for years (maybe never).</p>
]]></content:encoded>
	</item>
	<item>
		<title>Comment on Bad Posture: Icahn And Mentor by Brittany</title>
		<link>http://chipdesignmag.com/lpd/sperling/2011/02/09/bad-posture-icahn-and-mentor/comment-page-1/#comment-2879</link>
		<dc:creator>Brittany</dc:creator>
		<pubDate>Wed, 09 Feb 2011 23:10:11 +0000</pubDate>
		<guid isPermaLink="false">http://chipdesignmag.com/lpd/sperling/?p=373#comment-2879</guid>
		<description>Ed:
 
Your commentary on Carl Icahn and his interest in Mentor is way off base. &quot;So what’s really behind Icahn’s charges? Are they legitimate?&quot; Yep, they sure are.
 
&gt;&gt; “First, Icahn claims that Mentor’s expenses are high compared to the company’s revenue. He’d be correct in many industries, but EDA and other highly complex technology sectors require huge R&amp;D efforts.”  Way to ignore the facts, Ed -- Icahn was complaining about Mentor&#039;s spending on SG&amp;A (Sales, General and Administration).  He said nothing about R&amp;D -– but since you did, Mentor spent 30 percent on R&amp;D, less than all the other public EDA companies, with Cadence at 39 percent,  Magma at 35 percent and Synopsys at 34 percent.  Whereas Mentor at 44 percent spent more on SG&amp;A than Cadence (42 percent) and Synopsys (35 percent), although less than Magma&#039;s 47.

&gt;&gt; “Second, Icahn said that Mentor’s management has done nothing to promote shareholder value. So why has he continued to buy up Mentor stock? Apparently no one on Icahn’s staff understands just how complex a new rev of a DFM tool suite or a high-level synthesis tool can be. The market does, though. Mentor’s share price is up 70% in the last year and it grew about 50% in 2009.” I have no idea why you mentioned DFM in this paragraph, but the fact is Mentor stock is up 70 percent precisely BECAUSE Icahn has been buying.  Go back and take note of when it became public that he’d taken an interest and then map what’s happened. And as for the last couple days, the market is probably reacting positively to the fact someone FINALLY has an interest in getting full shareholder value out of MENT.

&gt;&gt; “Icahn doesn’t necessarily want to see Mentor sold whole, although he would never admit that publicly. If it raised Mentor’s stock price, Icahn would get a big piece of the action. But the better scenario from Icahn’s standpoint would be to see lucrative pieces of the company sold off individually.” Yes, that’s a better scenario for Icahn. As it would be for all Mentor shareholders. And I suspect he wouldn’t give a hoot about saying it publicly.

&gt;&gt; “One way to do that is to keep top executives off balance and say they’re padding their own pockets with huge profits and living lavish lifestyles. That hardly jibes with the practice of CEO Wally Rhines and president Greg Hinckley to fly coach, despite the millions of miles in frequent flier accounts. And with nearly 9 million frequently flier miles under his belt, Rhines doesn’t really have any time for the ‘country club’ life that Icahn accuses him of living.” Ha. Wally and Greg fly first class (there are witnesses – ask around). I don’t begrudge them that at all but get your facts right.

&gt;&gt; “Business is business, of course. People with good business instincts, lots of money and a team of fast-talking investors and lawyers have a good success rate in twisting corporations to run in their own direction. But this is a business they clearly do not understand, and they will have a very tough time getting a buyer for technology that is integrated across a flow of highly integrated tools or a built-in self test product suite that applies to a small but very important set of customers needing ever more complicated technology.” Really? Why? There was a buyer for this very company willing to pay more than the current share price a couple years ago. Name of Cadence Design Systems – perhaps you’ve heard of them.

&gt;&gt; “… it’s a sure bet that Icahn has no idea what the real value is of those pieces [of Mentor] and to whom. It’s unlikely that anyone does, until a buyer offers a price.” Yes, Ed, true. That’s the whole point. Icahn would like to find out.

Your final comment is perhaps the most troubling, suggesting that Icahn is posturing. I don’t exactly know what you mean by that (or why you care) but despite your characterization of his press announcement as “impromptu” it was in fact very prompted: by an underhanded attempt on the part of Mentor management to manipulate the mechanics of board nominations so as to prevent anyone from taking control of that group and do exactly what Icahn and others have asked for and what Wally and Greg fear: replacement of current management with someone who will manage the company in the interest of those who actually own the company. As a former shareholder in Mentor I can say only that it is high time.</description>
		<content:encoded><![CDATA[<p>Ed:</p>
<p>Your commentary on Carl Icahn and his interest in Mentor is way off base. &#8220;So what’s really behind Icahn’s charges? Are they legitimate?&#8221; Yep, they sure are.</p>
<p>&gt;&gt; “First, Icahn claims that Mentor’s expenses are high compared to the company’s revenue. He’d be correct in many industries, but EDA and other highly complex technology sectors require huge R&amp;D efforts.”  Way to ignore the facts, Ed &#8212; Icahn was complaining about Mentor&#8217;s spending on SG&amp;A (Sales, General and Administration).  He said nothing about R&amp;D -– but since you did, Mentor spent 30 percent on R&amp;D, less than all the other public EDA companies, with Cadence at 39 percent,  Magma at 35 percent and Synopsys at 34 percent.  Whereas Mentor at 44 percent spent more on SG&amp;A than Cadence (42 percent) and Synopsys (35 percent), although less than Magma&#8217;s 47.</p>
<p>&gt;&gt; “Second, Icahn said that Mentor’s management has done nothing to promote shareholder value. So why has he continued to buy up Mentor stock? Apparently no one on Icahn’s staff understands just how complex a new rev of a DFM tool suite or a high-level synthesis tool can be. The market does, though. Mentor’s share price is up 70% in the last year and it grew about 50% in 2009.” I have no idea why you mentioned DFM in this paragraph, but the fact is Mentor stock is up 70 percent precisely BECAUSE Icahn has been buying.  Go back and take note of when it became public that he’d taken an interest and then map what’s happened. And as for the last couple days, the market is probably reacting positively to the fact someone FINALLY has an interest in getting full shareholder value out of MENT.</p>
<p>&gt;&gt; “Icahn doesn’t necessarily want to see Mentor sold whole, although he would never admit that publicly. If it raised Mentor’s stock price, Icahn would get a big piece of the action. But the better scenario from Icahn’s standpoint would be to see lucrative pieces of the company sold off individually.” Yes, that’s a better scenario for Icahn. As it would be for all Mentor shareholders. And I suspect he wouldn’t give a hoot about saying it publicly.</p>
<p>&gt;&gt; “One way to do that is to keep top executives off balance and say they’re padding their own pockets with huge profits and living lavish lifestyles. That hardly jibes with the practice of CEO Wally Rhines and president Greg Hinckley to fly coach, despite the millions of miles in frequent flier accounts. And with nearly 9 million frequently flier miles under his belt, Rhines doesn’t really have any time for the ‘country club’ life that Icahn accuses him of living.” Ha. Wally and Greg fly first class (there are witnesses – ask around). I don’t begrudge them that at all but get your facts right.</p>
<p>&gt;&gt; “Business is business, of course. People with good business instincts, lots of money and a team of fast-talking investors and lawyers have a good success rate in twisting corporations to run in their own direction. But this is a business they clearly do not understand, and they will have a very tough time getting a buyer for technology that is integrated across a flow of highly integrated tools or a built-in self test product suite that applies to a small but very important set of customers needing ever more complicated technology.” Really? Why? There was a buyer for this very company willing to pay more than the current share price a couple years ago. Name of Cadence Design Systems – perhaps you’ve heard of them.</p>
<p>&gt;&gt; “… it’s a sure bet that Icahn has no idea what the real value is of those pieces [of Mentor] and to whom. It’s unlikely that anyone does, until a buyer offers a price.” Yes, Ed, true. That’s the whole point. Icahn would like to find out.</p>
<p>Your final comment is perhaps the most troubling, suggesting that Icahn is posturing. I don’t exactly know what you mean by that (or why you care) but despite your characterization of his press announcement as “impromptu” it was in fact very prompted: by an underhanded attempt on the part of Mentor management to manipulate the mechanics of board nominations so as to prevent anyone from taking control of that group and do exactly what Icahn and others have asked for and what Wally and Greg fear: replacement of current management with someone who will manage the company in the interest of those who actually own the company. As a former shareholder in Mentor I can say only that it is high time.</p>
]]></content:encoded>
	</item>
</channel>
</rss>

