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Early iPhone 6 Benchmark Results Show Only Modest Gains For A8

wchin Re:First 64bit (207 comments)

Many make the wrong assumption that 64 bit processor means only increasing the memory pointers to 64 bit. This is not the case with the transition from the A6 to the A7. The instruction set changed from ARMv7s to ARMv8 (or ARM64). There are performance gains to be made moving to a new, revised ISA for which 64 bit is but one of the characteristics. Further, Apple has been working on their toolchain and they can leverage certain software compiler improvements especially within the Objective C runtime, like tagged pointers and inline reference counting that are made possible with 64 bit pointers.

See: https://www.mikeash.com/pyblog...

about two weeks ago
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Does Learning To Code Outweigh a Degree In Computer Science?

wchin Coding vs. Degree is not Theory vs. Practice (546 comments)

Absolutely, to be a top notch software developer, learning to code trumps a CS degree. After all, you can get a degree but who knows how much attention you really paid in class. Further, learning to code goes beyond what is taught in a CS degree.

However, this isn't an issue of theory vs. practice. It's like saying, would you rather have a surgeon that learned surgery the traditional route with 4 year degree heavy in science, specifically biology classes and then went to med school, etc, or a self taught surgeon that learned at a field hospital during a war? Obviously, both would have to learn the basics of surgery itself, that is the actual cutting, the sewing, etc. The former is likely to have a far better grounding in a wider range of subjects to treat the patient, even if the a particular of the latter might be better at the actual cutting and sewing.

When one graduates with a CS degree, they might not have yet learned how to code, especially in a professional setting in a group. A coder can learn everything that a person with a CS degree learned, but that is basically going to each of the CS classes. Sometimes the hinderance to getting the degree isn't the CS classes, it's the other classes required for an undergraduate degree. In either case, to be a very good coder, you basically have to master both the theory and the practice.

about three weeks ago
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California In the Running For Tesla Gigafactory

wchin Re:Nevada is the only candidate (172 comments)

Lithium is probably under 4% of the total mass of the battery. Tesla's battery is primarily composed of lithium, nickel, aluminum, cobalt, and graphite. Nickel and aluminum are the big constituents by mass of the battery. Total lithium mass per battery is probably around 20kg. For 1,000,000 cars, that's about 22,000 tons. That might be enough to start production in the U.S., but more likely, Canada will supply most of the initial amounts of raw materials including the nickel and lithium.

about 2 months ago
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Tesla Model S Hacking Prize Claimed

wchin Poor password selection (59 comments)

This "hack" sounds like they brute forced a weak password on the service that that provides access to the Model S mobile apps. That password is shared with the "My Tesla" owner's website. It is possible to set that password to a far longer and complex password, certainly far longer than 6 characters. I suspect this contest was rigged and someone set the password to "111111" or something like that.

The car itself talks to Tesla using an OpenVPN session over 3G or Wifi.

about 2 months ago
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A Skeptical View of Israel's Iron Dome Rocket Defense System

wchin Re:I've always thought that the best way for Israe (379 comments)

This reasoning, on the face of it, is absolutely ridiculous.

Because one side is very advanced militarily and the other side is not, then the side that is very advanced needs to let the other side have a fairer fight? No. Not at all.

A mugger comes at you with a knife. If you have a gun, that's not fair, you need to let the mugger with the knife stab you a few times before you pull the trigger?

Or let's say the other side has a stone, and is perfectly happy to hit you over the head repeatedly with it until you are dead. You have a M240 light machine gun. Very asymmetrical. You can take out the guy with the stone and a few of his buddies with a burst. But no! Unfair! They should be given machine guns too to make this fair. You should wait until they are given machine guns. Matter of fact, you can watch them get machine guns. So you wait to make sure they get all set up with their new donated machine guns, make sure they get the right training so that they know how to kill you with it, since it is only fair, right? No. If this were you, you would kill them if they are trying to kill you, no matter what weapons they possess, no matter how asymmetrical the military technology.

We are in very twisted times, as Hamas knows it can't really hurt Israel militarily with these tactics, but is very willing to provoke the situation such that they get pummeled. Each time Hamas provokes a pummeling, they get more funding and better weaponry from outside sources and more sympathy from both within and around the world. In the short term, Hamas has no hope of winning militarily. However, they hope that in the long term, they can grow strong enough to take on Israel militarily and wipe them out.

about 2 months ago
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Tesla: A Carmaker Or Grid-Storage Company?

wchin Re:Panasonic (151 comments)

At the cell level, Tesla is probably already paying under $250/kWh. Maybe even just under $200/kWh. That's below most lithium iron phosphate battery costs which are already competitive with lead acid batteries for total life cycle costs in an off-grid solar battery setup. So this "too expensive" comment is probably not right. Further, if they recycle battery cells from transportation use to grid storage use, then the costs could be far lower.

about 5 months ago
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Samsung Fudging Benchmarks Again On Galaxy Note 3

wchin Re:If this was Apple... (258 comments)

I think you are lying. Sources?

Approximately the same way would be deliberately checking for a benchmark and artificially boosting performance to do well on that particular benchmark which is un-producable outside of that benchmark.

That is not the same thing as choosing benchmarks your product is good and and highlighting those benchmarks in your marketing material. That's just highlighting your strengths.

about a year ago
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Apple Offers Refund To Stiffed Breaking Bad Season Pass Customers

wchin Re:That's not a refund. (215 comments)

Bashing Apple has become a favorite past time for some people. Yes, AMC is at fault here. Apple did the right thing - I'm curious if AMC is going to reimburse Apple for the loss.

about a year ago
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Nokia Insider On Why It Failed and Why Apple Could Be Next

wchin Re:Link Baiting This? (420 comments)

I have a Nokia 770 Internet Tablet. It was an interesting idea. Apple would never have shipped a product in that state of development. This was certainly not a marketing failure. It was a product creation failure. It wasn't usable - instead, it was a glimpse at something that might be interesting if they iterated on the software. At least when Microsoft ships utter crap 1.0, they usually follow up with not so crappy 2.0 and halfway decent 3.0. Nokia's follow ons were not so interesting in the primary area that mattered - the software. Same problem with the Sharp Zaurus.

1 year,16 days
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At Current Rates, Tesla Could Soon Suck Up Worldwide Supply of Li-Ion Cells

wchin Re:Perspective is important (351 comments)

There is an issue for Tesla that a lot of the capacity you are mentioning is not applicable to solving Tesla's requirements. Between different chemistries and form factors, Tesla will require different plants to ramp up. We also don't know the battery specifics for anything beyond the Model S/X. However, Panasonic alone was expecting to make 600 million 18650 cells in the Suminoe Plant through phase 2. So Panasonic will probably be able to supply Telsa through 2017, but it's through 2020 that becomes the issue. Of course, that's a lot of time to ramp.

As for demand, there are almost 6 million households that have an annual income of $150k+ in the U.S. alone. So there is likely roughly 1 million of these households looking to buy a car in any particular year.

1 year,19 days
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At Current Rates, Tesla Could Soon Suck Up Worldwide Supply of Li-Ion Cells

wchin Perspective is important (351 comments)

The lithium ion 18650 cylindrical cell production has been dropping as laptop demand has dropped and as laptops are moving to lithium polymer flat pack batteries.

Panasonic/Sanyo has had to close factories. Originally, Panasonic's plants that were acquired from Sanyo were supposed to be able to produce 300 million cells in their Suminoe plant in Osaka, Japan in just stage 1.

http://www.eetasia.com/ART_8800603184_765245_NT_5f784554.HTM

That plant alone, running at full stage 1 capacity could produce enough batteries for 40,000 85kWh Model S's. The demand from Tesla is strong enough that they are expanding production again:

http://articles.economictimes.indiatimes.com/2013-08-21/news/41433228_1_lithium-ion-batteries-production-line#

However, it really isn't the Model S or Model X that will have the issue, or even the initial production of whatever Gen 3 car that is coming. The big issue is making enough batteries for millions of EVs, and that will take some planning for the necessary expansion.

1 year,19 days
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My most frequent OS migration path?

wchin blending (413 comments)

For my primary system:
UCSD P System -> DOS -> Windows -> OS/2 -> NeXTstep -> OPENSTEP -> Mac OS 8/9, Mac OS X Server -> Mac OS X

For servers:
OS/2 -> NeXTstep -> OPENSTEP -> Mac OS X Server/Linux/Windows/FreeBSD/Solaris

For virtualization:
VMware -> Parallels Server -> VirtualBox -> XenServer/VMware

For tablets/mobile:
Newton -> Palm -> Sharp Zaurus (Linux) -> Nokia 770 (Linux) -> Windows Mobile -> iOS/Android (mostly iOS)

Never did get BeOS/Haiku running for more than an hour to poke around, never did dabble with Amiga, C64, or Plan9.

about a year ago
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Tesla Motors Loses Appeal Against BBC's Top Gear

wchin Re:Tesla is nasty! (385 comments)

That article has been completely debunked because of outlandish starting assumptions. The amount of metal they modeled for a car electric motor was orders of magnitude off. Even a brief scan of that study reveals just complete and utter incompetence that I wonder if it was a high school project.

As for electricity generation, the beauty is that the mix of energy sources for electricity generation can change over time. It can be oil, coal, natural gas, nuclear, geothermal, hydro, solar, biogas, tide, wind, or more. For a gasoline car, it's basically oil + a bit of ethanol for the entire lifespan of the car. Even as it stands, where coal and natural gas are the primary sources of fuel, electric vehicles have lower pollution levels and lower greenhouse gas emissions (mainly due to a shift to natural gas as the predominate producer). It also matter where the pollution occurs, and power plants are typically not downtown. Further, in the U.S., a larger percentage of the energy mix for electricity is domestically produced and not subject to the pricing whims of other governments that are not friendly to the U.S.

about a year and a half ago
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Tesla Motors Loses Appeal Against BBC's Top Gear

wchin Re:Tesla is nasty! (385 comments)

Slander/defame anyone, and they might sue! Including you! I bet there are scenarios where you would be willing to go to court for redress. No need to pretend you wouldn't do the same thing in a similar situation.

Your embarrassment and association is completely in your head. Whether or not someone is a jackass is their problem - there are plenty of jackasses out there with any number of issues. It might even be you at times.

about a year and a half ago
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CNN Replicates John Broder's Drive In the Tesla Model S

wchin Re:Problem with egos really (525 comments)

As a journalist, we have high expectations that Mr. Broder would reports impartial facts. Since he wrote it in the New York Times, we have expectations about the journalistic integrity of the writer and the facts within the article. The article at best, is misleading and plays loose with the facts. At worst, it is a hatchet job just on the side of possibly escaping legal culpability.

First of all, he has to decide what he was trying to accomplish. He if is trying to test Tesla's supercharger network and that is the primary motivation, then Mr. Broder exceeded the test parameters. It is not that hard to successfully travel where he went using only the superchargers. However, if he wants to exceed the test parameters, then by all means he could have chosen to plug in at any number of other EV charging locations, had chosen to charge fully, or chosen to plug in overnight. The closest analogy I can think of is if a journalist is trying to verify mileage claims of say, a Prius. The mileage claim is provided given certain test parameters. If you drive too fast, you won't get that mileage. If it is too cold or too hot, it won't get the same mileage. So if you want to see if you can get that mileage, restrict yourself to only fueling near the limits of that resulting range, and then drive fast *and* choose to not fuel all the way up, then yeah, you didn't get the mileage. Whose fault is that?

Mr. Broder on several occasions noted temperatures and speeds that were not indicative of what he actually experienced throughout the drive. His writing clearly exaggerates the situation, most of which is his own doing. Further, it's nearly impossible to not see the ability to charge further. As a long time energy reporter for the New York Times, can we reasonably expect that he is this incompetent? Mr. Broder didn't need to be so loose with the facts, since the current generation of BEVs are not really ready for most people. They do need to be plugged in. They are fantastic for those that can afford it as a daily driver, mostly commuting and 2 hour round trips. Cost of ownership has dropped to roughly equivalent of gasoline power cars (battery replacement costs gas costs, probably less repair needed for BEV vs. gasoline car over time). But for road-tripping where multiple back to back full energy transfers are necessary, it isn't as convenient as a gasoline car at the moment. Mr. Broder, as a journalist writing a piece that is expected to accurately portray the facts, could have pointed this out while sticking to the facts and competently operating/handling the vehicle and he failed to do so.

about a year and a half ago
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Apple Kills a Kickstarter Project - Updated

wchin 3rd party lightning cables (471 comments)

I've already purchased several 3rd party Lightning cables that work well for less than $10. I know there are some awful ones out there, but the ones I bought are pretty good. This project could have just bundled those cables, which probably cost less than $6 in bulk.

As usual, there are a bunch of people spazzing about Apple... and perfectly willing to cozy up to a number of different megacorps that behave just as badly or oftentimes even worse. A number of these megacorps have more questionable patent practices, proprietary connectors, labor practices, environmental policies, and so forth. That's before you get to the damning emails in the Samsung trial after the illegal purging of a slew of relevant evidence. Sigh. I guess as long as you believe your favorite megacorp is better, than so be it, but you are likely just kidding yourself in an exercise in self validation for the product choice you made.

BTW, both mini-usb and micro-usb are very failure prone and do not provide enough charging current. Apple has never been afraid to stake new ground when they see a technical or user advantage.

about 2 years ago
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Microsoft To Apple: Don't Take Your Normal 30% Cut of Office For iOS

wchin Re:With Regard to Microsoft? I Have One Bit of Adv (724 comments)

Wow... you are completely insane. Do you not know Microsoft's very sketchy history? Where were you picketing Microsoft for their developer policies over the decades? Do you have any idea how much it cost to develop for and deploy on various consumer computing platforms like Xbox, Nintendo Wii, Playstation, Windows, etc? Have ever sold any software through a publisher? Obviously not.

about 2 years ago
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Intel To Build Next Gen Processor For iOS Devices

wchin Re:architecture change (255 comments)

You do realize that iOS already runs on x86, right? The simulator that is provided with Xcode is running iOS for x86... and the binary of the app tested in the simulator is an x86 binary, built for iOS.

more than 3 years ago
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22 Million Missing Bush White House Emails Found

wchin Re:Wait (326 comments)

Cut the size of government and its power and you cut the opportunity for mischief and mayhem.

If only it were that simple. If the functions that a particular government organization is performing are cut and then are merely transferred to private enterprise, then the opportunity for mischief and mayhem remain, at best, the same. In addition, private enterprise is by many metrics less transparent, less accountable, and more profit driven than government. If that function was for the public good, then going private enterprise means less accountability and more mischief and mayhem... but at least with less transparency, you and I might know less about it.

I am not advocating bigger government or smaller government. In the end, there are no easy solutions which makes public policy and the business of government very boring and unsuited to 30 second soundbites. Our system is still very flawed and the way our politicians play the game these days just makes it worse. But of course, it is the people that lets this happen and the people in the end have to decide as collective to fix it.

more than 4 years ago
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The Myth of the New India

wchin Re:Cultural Problems (378 comments)

Ah... you should check your history on the American Revolutionary War. The Americans lost engagement after engagement and was on the brink of destruction for most of the war. The French helped a lot - Ambassador Benjamin Franklin was instrumental in getting England's primary rival involved. The Americans also pioneered assymetrical warfare and fought "unfairly" (in the eyes of the British) - helping to make it unpalatable to continue to occupy (note to the American occupiers today, ironically).

Now, the Americans did hang tough... against all odds, against all conventional reason, against a vastly superior military force for a stand on liberty, freedom, and justice. For that, we should be very proud of our forefathers. But make no mistake, Americans did not kick Britain's ass almost the entire time, and certainly not by ourselves.

more than 8 years ago

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