Skip to main content

Home/ Aasemoon'z Cluster/ Group items tagged scaling

Rss Feed Group items tagged

Filter: All | Bookmarks | Topics Simple Middle
Aasemoon =)

Amazon Web Services Blog: AWS For High Performance Cloud Computing - NASA, MATLAB - 0 views

aws.typepad.com/...oud-computing-nasa-matlab.html

technology math MATLAB computing computer science

shared by Aasemoon =) on 20 Sep 10 - No Cached
  • The MATLAB team at MathWorks tested performance scaling of the backslash ("\") matrix division operator to solve for x in the equation A*x = b. In their testing, matrix A occupies far more memory (290 GB) than is available in a single high-end desktop machine—typically a quad core processor with 4-8 GB of RAM, supplying approximately 20 Gigaflops. Therefore, they spread the calculation across machines. In order to solve linear systems of equations they need to be able to access all of the elements of the array even when the array is spread across multiple machines. This problem requires significant amounts of network communication, memory access, and CPU power. They scaled up to a cluster in EC2, giving them the ability to work with larger arrays and to perform calculations at up to 1.3 Teraflops, a 60X improvement. They were able to do this without making any changes to the application code. Here's a graph showing the near-linear scalability of an EC2 cluster across a range of matrix sizes with corresponding increases in cluster size for MATLAB's parallel backslash operator:
Aasemoon =)

Carnegie Mellon's Incredible Robot Snake Climbs a Real Tree | Singularity Hub - 0 views

singularityhub.com/...snake-climbs-a-real-tree-video

electronics technology engineering robots robotics mechatronics mechanics

shared by Aasemoon =) on 07 Sep 10 - No Cached
  • Carnegie Mellon has taught its robotic snake to climb trees, though one hopes it won’t start offering your spouse apples. “Uncle Sam” (presumably named for its red, white, and blue markings) is a snake robot built from modular pieces. The latest in a line of ‘modsnakes’ from Carnegie Mellon’s Biorobotics Lab, Uncle Sam can move in a variety of different ways including rolling, wiggling, and side-winding. It can also wrap itself around a pole and climb vertically, which comes in handy when scaling a tree. You have to watch this thing in action. There is something incredibly life-like, and eerie, about the way it scales the tree outdoors and then looks around with its camera ‘eye’. Projects like Uncle Sam show how life-mimicking machines could revolutionize robotics in the near future.
Aasemoon =)

Holograms from the Nano Cosmos - 1 views

www.azonano.com/news.asp

holograms nanotechnology technology cosmos

shared by Aasemoon =) on 20 Feb 10 - Cached
  • Everyone knows holograms from their everyday life, for instance the ones applied to credit cards as security indicators. Unlike a photography of an object which only records the amplitude of the light wave coming from the object, the hologram also includes local information about the light wave's phase. In appropriate lighting, the initial wave front is reconstructed in proper phase and the spectator has a three dimensional sensation of the object. But it is not this characteristic of holography that is central when it comes to the imaging of small structures, but the fact that for the recording of a hologram no lenses are required at all. In order to conduct research on nanometer scaled objects, light of an equally small wave length is needed (soft X-rays). The only lenses working in this wave spectrum (so-called Fresnel zone plates) are very sophisticated in design and still yield a quality of imaging one scale inferior then lenses for visible light. The modus operandi of recording holograms without the use of lenses is to superimpose the light wave having radiated the object at the time of recording with a reference wave having a known and stable (coherent) phase.
Aasemoon =)

Scientists use nanotechnology to try building computers modeled after the brain - 0 views

www.nanowerk.com/...spotid=14495.php

technology nanotechnology science brain synapses

shared by Aasemoon =) on 23 Feb 10 - Cached
  • Scientists have great expectations that nanotechnologies will bring them closer to the goal of creating computer systems that can simulate and emulate the brain's abilities for sensation, perception, action, interaction and cognition while rivaling its low power consumption and compact size. DARPA for instance, the U.S. military's research outfit known for projects that are pushing the envelope on what is technologically possible, has a program called SyNAPSE that is trying to develop electronic neuromorphic machine technology that scales to biological levels. Started in late 2008 and funded with $4.9 million, the goal of the initial phase of the SyNAPSE project is to "develop nanometer scale electronic synaptic components capable of adapting the connection strength between two neurons in a manner analogous to that seen in biological systems, as well as, simulate the utility of these synaptic components in core microcircuits that support the overall system architecture."
Aasemoon =)

Facebook Developers | HipHop for PHP: Move Fast - 0 views

developers.facebook.com/news.php

programming php facebook hiphop coding technology scaling

shared by Aasemoon =) on 03 Feb 10 - Cached
  • Today I'm excited to share the project a small team of amazing people and I have been working on for the past two years; HipHop for PHP. With HipHop we've reduced the CPU usage on our Web servers on average by about fifty percent, depending on the page. Less CPU means fewer servers, which means less overhead. This project has had a tremendous impact on Facebook. We feel the Web at large can benefit from HipHop, so we are releasing it as open source this evening in hope that it brings a new focus toward scaling large complex websites with PHP. While HipHop has shown us incredible results, it's certainly not complete and you should be comfortable with beta software before trying it out. HipHop for PHP isn't technically a compiler itself. Rather it is a source code transformer. HipHop programmatically transforms your PHP source code into highly optimized C++ and then uses g++ to compile it. HipHop executes the source code in a semantically equivalent manner and sacrifices some rarely used features — such as eval() — in exchange for improved performance. HipHop includes a code transformer, a reimplementation of PHP's runtime system, and a rewrite of many common PHP Extensions to take advantage of these performance optimizations.
Aasemoon =)

Diode propulsion could power microbots - tech - 15 March 2007 - New Scientist - 0 views

www.newscientist.com/...ion-could-power-microbots.html

electronics engineering technology robotics robots microbots mechanics mechatronics

shared by Aasemoon =) on 07 Mar 11 - No Cached
  • A new form of propulsion that could allow microrobots to explore human bodies has been discovered. The technique would be used to power robots and other devices such as microfluidic pumps from a distance. Finding a propulsion mechanism that works on the microscopic scale is one of the key challenges for developing microrobots. Another is to find a way to supply such a device with energy because there is so little room to carry on-board fuel or batteries. Now a team lead by Orlin Velev at North Carolina State University in Raleigh, US, has found that a simple electronic diode could overcome both these problems. Velev and Vesselin Paunov from the University of Hull, UK, floated a diode in a tank of salt water and zapped the set-up with an alternating electric field.
  • A new form of propulsion that could allow microrobots to explore human bodies has been discovered. The technique would be used to power robots and other devices such as microfluidic pumps from a distance. Finding a propulsion mechanism that works on the microscopic scale is one of the key challenges for developing microrobots. Another is to find a way to supply such a device with energy because there is so little room to carry on-board fuel or batteries. Now a team lead by Orlin Velev at North Carolina State University in Raleigh, US, has found that a simple electronic diode could overcome both these problems. Velev and Vesselin Paunov from the University of Hull, UK, floated a diode in a tank of salt water and zapped the set-up with an alternating electric field.
Aasemoon =)

Universal property of music discovered - 1 views

www.sciencedaily.com/...110325102008.htm

music science mathematics discovery

shared by Aasemoon =) on 25 Apr 11 - No Cached
  • Researchers at the Institute for Logic, Language and Computation (ILLC) of the University of Amsterdam have discovered a universal property of musical scales. Until now it was assumed that the only thing scales throughout the world have in common is the octave.
Aasemoon =)

IEEE Spectrum: IBM Makes 3-Nanometer Nanowire Silicon Circuits - 0 views

spectrum.ieee.org/...eter-nanowire-silicon-circuits

technology ieee electronics nanotechnology IBM

shared by Aasemoon =) on 09 Jul 10 - Cached
  • A test circuit built with nanowires of silicon could point the way to much smaller transistors, say the IBM researchers who created it. Researchers from IBM’s Thomas J. Watson Research Center announced today at the annual Symposium on VLSI Technology, in Honolulu, that they have built a ring oscillator out of field-effect transistors (FETs) based on nanowires with diameters as small as 3 nanometers. The oscillator—is composed of 25 inverters using negative- and positive-channel FETs. The device, which demonstrated a delay of just 10 picoseconds per stage, shows that engineers can build a working circuit from transistors with much shorter channel lengths than today’s devices. Current flows through an FET’s channel under the control of the device’s gate. Scaling down the channel length will be critical if the dimensions of circuits on silicon chips are to continue to shrink, says Jeffrey Sleight, a senior technical staff member at IBM.
Aasemoon =)

Signal processing library speeds up video analytics deployment - 0 views

www.eetasia.com/0614408_499489_NP_24d4f7c7.HTM

DSP digital signal processing electronics FPGAs video processing

shared by Aasemoon =) on 01 Aug 10 - Cached
  • Pico Computing has developed a signal processing library which is made up of a set of FPGA firmware components and related tools that speed the development and deployment of advanced video and network analytics for security, defense and aerospace applications.The library, which includes flexible components for signal analysis, feature detection, scale-space generation, correlation and filtering, has been validated and optimized for Pico Computing platforms based on the latest-generation Xilinx Virtex-5 and Virtex-6 FPGA devices.
Aasemoon =)

DNA-assisted solution processing for high-performance thin-film transistors - 0 views

www.nanowerk.com/...spotid=17920.php

technology science nano technology transistors electronics

shared by Aasemoon =) on 14 Sep 10 - No Cached
  • Single-walled carbon nanotube (SWCNT)-based thin film transistors (TFTs) could be at the core of next-generation flexible electronics – displays, electronic circuits, sensors, memory chips, and other applications that are transitioning from rigid substrates, such as silicon and glass, to flexible substrates. What's holding back commercial applications is that industrial-type manufacturing of large scale SWCNT-based nanoelectronic devices isn't practical yet because controlling the morphology of single-walled carbon nanotubes is still causing headaches for materials engineers.
Aasemoon =)

WebP Home - 0 views

code.google.com/webp

technology web google

shared by Aasemoon =) on 26 Oct 10 - No Cached
  • WebP is a method of lossy compression that can be used on photographic images. WebP offers compression that has shown 39.8% more byte-size efficiency than JPEG for the same quality in a large scale study of 900,000 images on the Web. The degree of compression is adjustable so a user can choose the trade-off between file size and image quality.
  • Aasemoon =) on 26 Oct 10
     
    Well this is interesting!
Aasemoon =)

･HRP-2FX - 1 views

www.plasticpals.com/?p=25836&utm_source=feedburner&utm_medium=Google+Reader&utm_campaign=Feed%3A+PlasticPals+%28Plastic+Pals%29&utm_content=Google+Reader

technology electronics robotics mechanics mechatronics AI humanoids engineering robots

shared by Aasemoon =) on 15 Nov 10 - No Cached
  • Bipedal humanoid robots can step over obstacles and negotiate stairs where their wheeled counterparts cannot, but this comes with the risk of falling down.  Naturally, humanoid robots will never be accepted in society if they break when they fall down.  The bigger the robot, the more likely it is that it will damage itself during a fall and be unable to get up. In 2003 the HRP-2P was the first full-scale humanoid that could fall over safely and get back up, and so far remains alone; not even Honda’s ASIMO can do this.  As soon as it detected that it was falling, the HRP-2P would bend its knees and back, which helped to reduce the ground impact.  This motion, called “UKEMI”, is quite similar to how the SONY QRIO would react when falling over to reduce the risk of damaging its components.
Aasemoon =)

SRI International's Electroadhesive Robots - 0 views

www.sri.com/...electroadhesion.html

technology electronics engineering robots mechanics robotics science

shared by Aasemoon =) on 10 Nov 10 - No Cached
  • Events such as natural disasters, military actions, and public safety threats have led to an increased need for robust robots — especially ones that can travel across complex terrain in any dimension. The ability to scale vertical building surfaces or other structures offers unique capabilities in military applications such as urban reconnaissance, sensor deployment, and setting up urban network nodes. SRI's novel clamping technology, called compliant electroadhesion, has enabled the first application of this technology to wall-climbing robots that can help with these situations.  As the name implies, electroadhesion is an electrically controllable adhesion technology. It involves inducing electrostatic charges on a wall substrate using a power supply connected to compliant pads situated on the moving robot. SRI has demonstrated robust clamping to common building materials including glass, wood, metal, concrete, etc. with clamping pressures in the range of 0.5 to 1.5 N per square cm of clamp (0.8 to 2.3 pounds per square inch). The technology works on conductive and non-conductive substrates, smooth or rough materials, and through dust and debris. Unlike conventional adhesives or dry adhesives, the electroadhesion can be modulated or turned off for mobility or cleaning. The technology uses a very small amount of power (on the order of 20 microwatts/Newton weight held) and shows the ability to repeatably clamp to wall substrates that are heavily covered in dust or other debris.
Aasemoon =)

Scientists Combine Optics and Microfluidics to Make Lab-on-a-Chip More Practical - 0 views

www.azonano.com/news.asp

Optics Microfluids Lab-on-a-chip nanotechnology

shared by Aasemoon =) on 18 Feb 10 - Cached
  • The marriage of high performance optics with microfluidics could prove the perfect match for making lab-on-a-chip technologies more practical. Microfluidics, the ability to manipulate tiny volumes of liquid, is at the heart of many lab-on-a-chip devices. Such platforms can automatically mix and filter chemicals, making them ideal for disease detection and environmental sensing. The performance of these devices, however, is typically inferior to larger scale laboratory equipment. While lab-on-a-chip systems can deliver and manipulate millions of liquid drops, there is not an equally scalable and efficient way to detect the activity, such as biological reactions, within the drops.
Aasemoon =)

The Blue Talkz...: Winduino II - 4 views

blog.aasemoon.com/...winduino-ii.html

music electronics technology

shared by Aasemoon =) on 22 Jan 10 - Cached
  • This is really kool. I mean REALLY REALLY. Based on the ancient Aeolian harp, and made out of Adruino BT Bluetooth board, this little instrument plays with wind. Oh, and it’s solar powered. More info can be found here.  
  • François Dongier on 22 Jan 10
     
    Very interesting idea, but I'm not really impressed by the music it generates.
  • Jack Logan on 23 Jan 10
     
    Thanks for the tip, Aasemoon - I liked it so much - http://www.jackdlogan.com/music/winduino_II.html - surely, the Aeolian harp must have been the way humans first learned about pitched sound; in its original form - "Aeolian harps in literature and music Aeolian harps are featured in at least two Romantic-era poems, "The Aeolian Harp" and "Dejection, an Ode", both by Samuel Taylor Coleridge. In William Heinesen's novel The Lost Musicians set in Tórshavn, Kornelius Isaksen takes his three sons to a little church where, in the tower, they sit listening to the 'capriciously varying sounds of an Aeolian harp', which leads the boys into a lifelong passion for music. Aeolian harps are mentioned in Vladimir Nabokov's classic Lolita. A lyre is mentioned in Percy Bysshe Shelley's "Ode to the West Wind" which is another name for an Aeolian Harp. An aeolian harp is featured in Ian Fleming's 1964 children's novel Chitty Chitty Bang Bang to make a cave seem haunted. Henry Cowell's Aeolian Harp (1923) was one of the first piano pieces ever to feature extended techniques on the piano which included plucking and sweeping the pianist's hands directly across the strings of the piano. The Etude in A flat major for piano (1836) by Frédéric Chopin (Étude Op. 25, No. 1 (Chopin)) is sometimes called the "Aeolian Harp" etude, a nickname given it by Robert Schumann. The piece features a delicate, tender, and flowing melody in the fifth finger of the pianist's right hand, over a background of rapid pedaled arpeggios. One of Sergei Lyapunov's 12 études d'exécution transcendante, Op.11 No.9, is named by the author "Harpes éoliennes" (aeolian harps). In this virtuoso piece, written between 1897 and 1905, the tremolo accompaniment seems to imitate the sounding of the instrument. Young Thomas at work on his harp. In 1972, Chuck Hancock and Harry Bee recorded a giant 30 foot
  • Aasemoon =) on 24 Jan 10
     
    Cool... glad you like this Jack! =) It amazed me quite a bit too...
Aasemoon =)

NVIDIA and University of Illinois Join Forces To Release World's First Textbook On Prog... - 1 views

www.nvidia.com/...io_1264656303008.html

technology electronics programming coding parallel processors books nvidia

shared by Aasemoon =) on 29 Jan 10 - Cached
  • The first textbook of its kind, Programming Massively Parallel Processors: A Hands-on Approach launches today, authored by Dr. David B. Kirk, NVIDIA Fellow and former chief scientist, and Dr. Wen-mei Hwu, who serves at the University of Illinois at Urbana-Champaign as Chair of Electrical and Computer Engineering in the Coordinated Science Laboratory, co-director of the Universal Parallel Computing Research Center and principal investigator of the CUDA Center of Excellence. The textbook, which is 256 pages, is the first aimed at teaching advanced students and professionals the basic concepts of parallel programming and GPU architectures. Published by Morgan Kaufmann, it explores various techniques for constructing parallel programs and reviews numerous case studies. With conventional CPU-based computing no longer scaling in performance and the world’s computational challenges increasing in complexity, the need for massively parallel processing has never been greater. GPUs have hundreds of cores capable of delivering transformative performance increases across a wide range of computational challenges. The rise of these multi-core architectures has raised the need to teach advanced programmers a new and essential skill: how to program massively parallel processors.
  • Aasemoon =) on 29 Jan 10
     
    This, I want to read....
Aasemoon =)

IEEE Spectrum: Design Challenges Loom for 3-D Chips - 0 views

spectrum.ieee.org/...n-challenges-loom-for-3d-chips

technology electronics engineering microchip chip 3-d chips GPU

shared by Aasemoon =) on 14 Mar 10 - Cached
  • Three-dimensional microchip designs are making their way to market to help pack more transistors on a chip as traditional scaling slows down. By stacking logic chips on top of one another other or combining logic chips with memory or RF with logic, chipmakers hope to sidestep Moore's Law, increasing the functionality of smartphones and other gadgets not by shrinking a chip's transistors but the distance between them. "There's a big demand for smaller packages in the consumer market, especially for the footprint of a mobile phone, or for improving the memory bandwidth of your GPU," says Pol Marchal, a principal scientist of 3-D integration at European microelectronics R&D center Imec. On 9 February, at the IEEE International Solid-State Circuits Conference (ISSCC), in San Francisco, Imec engineers presented some key design challenges facing 3-D chips made by stacking layers of silicon circuits using vertical copper interconnects called through-silicon vias (TSVs). These design constraints will have to be dealt with before TSVs can be widely used in advanced microchip architectures, Marchal says.
Aasemoon =)

Image stabilizers | Video/Imaging DesignLine - 0 views

www.videsignline.com/...RTBXLK5QW0ZQE1GHOSKHWATMY32JVN

programming coding technology electronics engineering dsp video imaging

shared by Aasemoon =) on 06 Mar 10 - Cached
  • Image stabilization remains a major challenge for video cameras, from high-end cinema and broadcast units down through consumer camcorders. Although a variety of technologies now exist to stabilize images, they are typically complex and come at a steep price, making them impractical for most applications. Yet some end users often swallow that cost simply because the alternative can be more expensive. For example, an intricate shot on a movie set could cost hundreds of thousands of dollars to recreate if the first take can't be used because it turned out to be too shaky. Of course, not every end user can justify that expense. So what's needed is a solution that can scale from the low end to the high end, with no trade-offs along the way in terms of price and performance. That's a tall order, but meeting it creates a huge market opportunity. For example, besides applications such as broadcast, cinema and consumer cameras, the technology also could be used in verticals such as government and security.
Aasemoon =)

Assembling nanocubes with a molecular 'Lego' toolkit - 0 views

www.nanowerk.com/...newsid=15378.php

technology nanotechnology science nano molecules

shared by Aasemoon =) on 18 Mar 10 - Cached
  • (Nanowerk News) Scientists at the University of Glasgow have devised a molecular 'LEGO toolkit' which can be used to assemble a vast number of new and functional chemical compounds. Using molecules as building blocks they have been able to construct a molecular scaffold based on tiny (nano-scale) storage cubes. This new ‘designer route’ opens the door to many new compounds that, potentially, are able to act as the ion sensors, storage devices, and catalysts of the future. Researchers within the Department of Chemistry created hollow cube-based frameworks from polyoxometalates (POMs) – complex compounds made from metal and oxygen atoms – which stick together like LEGO bricks meaning a whole range of well-defined architectures can be developed with great ease ("Face-directed self-assembly of an electronically active Archimedean polyoxometalate architecture").
Aasemoon =)

Announcing our new, free, open API | face.com - 0 views

blog.face.com/api

programming coding face recognition recognition API

shared by Aasemoon =) on 06 May 10 - Cached
  • Today face.com is proud to announce the opening of our platform APIs! After scanning billions of photos and tagging over 50 million users through Photo Tagger and Photo Finder, we’re moving ahead with our goal of making face recognition approachable and available to all. In this open alpha stage, we’re letting any developer tap into our face detection and face recognition tech through simple REST API calls. Whether you’re looking to build a cool photo tagging application, create personalized e-cards or campaigns, or any other sci-fi idea that comes to mind, we’re here to serve. A friend of the company, world-famous programmer, developer and founder of Technorati David Sifry got an early look at our API.  In David’s own words: “I’ve been impressed with Face.com’s API, and their plan for working closely with developers to build great applications that incorporate face detection and face recognition. Open platforms like this one will enable the creation of exciting new applications that we’ve never seen before at scale.”
1 - 20 of 22 Next ›
Showing 20▼ items per page