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Yeah Frank, it says here that it's the same kind of work, but closer to the ground. | |
KurzweilAI points this morning to an interesting article on 3D computer chip designs (a subject Phil and I spoke about in our latest edition of Fast Forward Radio).
The reason that manufacturers would be interested in 3D computer chips is that Moore's Law (which predicted the exponential improvement of the 2D integrated circuit) will soon fail. Gordon Moore himself said earlier this year that the law will soon fail as transistors reach the limits of miniaturization at atomic levels.
Just as civil engineers of the 1880s began building skyscrapers in crowded cities, [James] Lu is pioneering chip real estate by developing high-rise, 3-D chips to alleviate congestion in integrated circuits.
This may seem too obvious. You run out of room at the bottom of your beige box for a single layer of integrated chips, just install a second board above it, right?
Well, getting more 2D integrated circuits into your beige box by installing a second board above the first is not an answer to the problem. The key to greater and greater performance of integrated circuits has been a shrinking of the distance between transistors on the chip. The limits of the integrated circuit are not overcome by the sort of 3D computing that is really just 2D computing "folded over" to fit in a box.
What Lu is attempting to do is get the transistors on the second floor working directly with the transistors directly below them on the first floor - as well as the transistors on all sides.
In addition to keeping the computation level of Mr. Spock's chess set on its exponential track after Moore's Law has failed, 3D computing could allow other innovations, many that haven't been imagined yet.
Wafer-level stacking also allows for short connections between different types of chips. “Particularly today the industry is trying to combine memory with the processor, and more than half of the chip is taken up by memory,” Lu explains. “When we stack layers, we have a processor on the bottom and layer the memory on top, with a short access time between them.” Lu says the reduction of memory access time would be a huge advancement for large-scale computer clusters calculating nuclear reactions and weather broadcasting, for example.
And what would be a huge improvement for the big iron guys becomes a huge improvement for we PC users a cycle or two later.
“You are also creating new functionality,” says Nalamasu. “Such technology has vast implications, for example, integrating biochips with silicon chips.
If this would allow different types of computers to work well together, I wonder if this technology could also allow quantum computers to work closely with traditional computers. Quantum computers theoretically offer unimaginable power for a certain class of problems, but are, apparently, useless for other things. This might allow the best of both types of computing.
Kurzweil reports this encouraging development:
Hitachi Global Storage Technologies plans to announce on Monday a record for storage density on a disk drive: 230 billion bits per square inch, which would make possible a desktop computer drive capable of storing a terabyte of information.
The technology is known as perpendicular recording because the tiny magnets that represent digits are placed upright, not end to end.
I remember when I was working for a computer magazine years ago getting to try out a hard disk with an almost unimaginable size of 300 megabytes. Imagine trying to get by on so little now.
I wonder how long it will be before a terabyte seems cramped?
More details here (link requires annoying registration).
Here's an important development:
...(S)cientists from the Max Planck Institute for Quantum Optics in Garching and the Niels Bohr Institute in Copenhagen have proposed a scheme to transfer the quantum state of a pulse of light onto a set of atoms and have demonstrated it experimentally.
The current experiment paves the way for new experiments in which the information contained in light can be mapped onto atomic clusters and then back into the light again. In this way, one could not only store the state of light in an atomic clusters, but also retrieve it. This process will be necessary if we want to build quantum repeaters, that is, devices which will allow the extension of quantum communication far beyond the distances (of the order of 100 km) which are achieved nowadays.
Hmmm...long-range quantum communication. That should come in quite handy. As Seth Shostak pointed out a while back, quantum communication provides the means of sending interstellar signals with caller ID turned off. Just in case, you know, some of the folks turn out to be more like their movie counterparts than we would hope they would be.
(via Kurzweil AI)

A mere 29 days ago IBM announced that it's Blue Gene/L system was the world's fastest computer capable of a sustained speed of 36.01 teraflops (a teraflop is a trillion calculations per second).
Yesterday, NASA announced that its Project Columbia Beowulf cluster achieved a sustained performance of 42.7 teraflops. The $50 million dollar system will be used "to speed up spacecraft design, environmental prediction and other research."
Remarkably, this system was built in only 120 days.
This rivalry isn't over yet. Neither Blue Gene nor Project Columbia is operating at its top theoretical speed. Only 16 of Project Columbia's 20 computer units were operational at the time it was tested.
Via Kurzweil
AI, check out this modest proposal made at the Web
2.0 conference in San Franciso:
Universal access to all human knowledge could be had for around $260m, a
conference about the web's future has been told.
The idea of access for all was put forward by visionary Brewster Kahle, who
suggested starting by digitally scanning all 26 million books in the US Library
of Congress.
In his speech, Mr Kahle pointed out that most books are out of print most
of the time and only a tiny proportion are available on bookshop shelves.
He estimated that the scanned images would take up about a terabyte of space
and cost about $60,000 (£33,000) to store. Instead of needing a huge
building to hold them, the entire library could fit on a single shelf.
This is a tremendous idea; and the cost of doing it is only going to go down.
The initial scanning work is the only part of the plan that's likely to present
much of an expense factor. According to Moore's
Law, that $60,000 price tag for storage should be somewhere around $2,000
eight years from now. If the estimate for the robot scanner is accurate, and
it follows a less robust drop in price say halving once every four years
we would be looking at a price tag of around $65 million in the same
period of time. Pretty doable, I'd say.
Unfortunately, the legal concept of public domain is rapidly
diminishing, while copyright terms are lengthened and controls are made
more expansive. As John Bloom observed
a while back in The New Republic:
In the name of Mickey Mouse and other American icons, we have gradually lengthened
that 14-year limit on copyrights. At one time it was as much as 99 years,
then scaled back to 75 years, then in one of the most anti-American
acts of the last century suspended entirely in 1998. The Sonny Bono
Copyright Term Extension Act of that year says simply that there will be no
copyright expirations for 20 years, meaning that everything published between
1923 and 1943 will not be released into the public domain. Presumably they'll
take up the matter again in 2018 and decide whether any of these books, movies,
or songs are ever set free. There are 400,000 of them.
So Kahle's observation that few of these books are still on the shelf will
be beside the point. A scanned-in Library of Congress could conceivably serve
as a back-up to the print archive, providing an excellent disaster recover resourse,
but it would probably not be possible to distribute the whole archive. Only
those parts created before 1923.
Of course, there's hope that, when the copyright issue is reviewed again by
Congress (presumably in 2018) the public will be more aware of what's going
on and will not stand for any more expansions of copyright controls. Failing
that, maybe we could get an exception to copyright law into place. Perhaps we
could make this backup of the Library of Congress exempt from all copyright
restrictions as long as it's used by schools and public libraries.
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By 2018, the storage for a copy of the entire Library of Congress
online should cost less than $1000; even the cost of creating the archive
would be $15 million or less. We could put the entire Library of Congress
in every school in America. |

What a comeback! Last May we reported that the United States was poised to regain the title of "World's Fastest Supercomputer."
It's happened. On Tuesday IBM announced that it's Blue Gene/L system beat the Earth Simulator's maximum sustained speed of 35.86 teraflops with a sustained speed of 36.01 teraflops.
That's a speed differential of less than one-half of one percent. But how IBM did this is more impressive:
BlueGene/ L is one-hundredth the physical size of the Earth Simulator and consumes one twenty-eighth the power per computation, IBM said...
"It's again an exciting time to be involved in high-performance computing," said Jack Dongarra, a computer scientist at the University of Tennessee who ranks the 500 fastest computers. "For some computational scientists, it's like a Hubble telescope."
Paul Hsieh on the new version six of the Internet Protocol:
The new IPv6 internet naming and number protocol will make it possible for every person (or device) on Earth to have their own IP address.
Well, er, yeah...and then some. The linked article repeats the same modest claim before getting to heart of the matter:
Vinton Cerf of the Internet Corp. for Assigned Names and Numbers (ICANN) said the next-generation protocol, IPv6, had been added to its root server systems, making it possible for every person or device to have an Internet protocol address.
Cerf said about two-thirds of the 4.3 billion Internet addresses currently available were used up, adding that IPv6 could magnify capacity by some "25,000 trillion trillion times."
I heard our friend Alex Lightman talking about this a while back. He estimates that IPv6 will provide enough IP addresses so that every atom in the known universe can have one.
Now that oughta hold us for a while.
Original Comments
Not long back I heard that we are running out of phone numbers. A four digit area code would help for awhile, but even that wouldn't be enough in a few years.
I speculate that in the near future our IP address(es) will replace phone numbers as telephones become just another internet device.
Does the address contain permutations of every number and letter in the alphabet? Does this repeat within each section of the address? I drive along the road trying to figure out the patterns of auto license plates and such, but I never did any math study that "addressed" how long it takes to run out of these patterns. I'd love to hear from people who know...
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Not long back I heard that we are running out of phone numbers. A four digit area code would help for awhile, but even that wouldn't be enough in a few years.
I speculate that in the near future our IP address(es) will replace phone numbers as telephones become just another internet device.
Posted by: Stephen Gordon at July 22, 2004 09:16 AM