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Programming

Revisiting Amdahl's Law 54

Posted by Soulskill from the looking-for-new-loopholes dept.
An anonymous reader writes "A German computer scientist is taking a fresh look at the 46-year old Amdahl's law, which took a first look at limitations in parallel computing with respect to serial computing. The fresh look considers software development models as a way to overcome parallel computing limitations. 'DEEP keeps the code parts of a simulation that can only be parallelized up to a concurrency of p = L on a Cluster Computer equipped with fast general purpose processors. The highly parallelizable parts of the simulation are run on a massively parallel Booster-system with a concurrency of p = H, H >> L. The booster is equipped with many-core Xeon Phi processors and connected by a 3D-torus network of sub-microsecond latency based on EXTOLL technology. The DEEP system software allows to dynamically distribute the tasks to the most appropriate parts of the hardware in order to achieve highest computational efficiency.' Amdahl's law has been revisited many times, most notably by John Gustafson."
Graphics

NVIDIA To License Its GPU Tech 111

Posted by Soulskill from the sea-change dept.
An anonymous reader writes "Today in a blog post, NVIDIA's General Counsel, David Shannon, announced that the company will begin licensing its GPU cores and patent portfolio to device makers. '[I]t's not practical to build silicon or systems to address every part of the expanding market. Adopting a new business approach will allow us to address the universe of devices.' He cites the 'explosion of Android devices' as one of the prime reasons for this decision. 'This opportunity simply didn't exist several years ago because there was really just one computing device – the PC. But the swirling universe of new computing devices provides new opportunities to license our GPU core or visual computing portfolio.' Shannon points out that NVIDIA did something similar with the CPU core used in the PlayStation 3, which was licensed to Sony. But mobile seems to be the big opportunity now: 'We'll start by licensing the GPU core based on the NVIDIA Kepler architecture, the world's most advanced, most efficient GPU. Its DX11, OpenGL 4.3, and GPGPU capabilities, along with vastly superior performance and efficiency, create a new class of licensable GPU cores. Through our efforts designing Tegra into mobile devices, we've gained valuable experience designing for the smallest power envelopes. As a result, Kepler can operate in a half-watt power envelope, making it scalable from smartphones to supercomputers.'"
Displays

Oculus Rift Raises Another $16 Million 104

Posted by Soulskill from the all-about-the-benjamins dept.
Craefter writes "It seems that the Oculus Rift virtual-reality headset caught the attention of investors after its showing at E3 this year. Spark Capital and Matrix Partners were able to push $16 million at Oculus VR in the hopes that the product will live up to the hype. The HD unit looks a bit more slick than the ski-goggles-with-a-tablet-glued-to-it prototype, but the device would look even more appealing if the next-gen consoles would commit to supporting it. (We all know how well the PS3's 'wave-stick' did as an afterthought.) That said, major titles like the 9-year-old Half-Life 2 and the 6-year-old Team Fortress 2 are getting full support for the device. Hopefully some developers are looking into support for the Oculus Rift as a launch feature, rather than an addition years after the fact. IA bit like the EAX standard from Soundblaster. That worked out well too."
Cellphones

With an Eye Toward Disaster, NYC Debuts Solar Charging Stations 115

Posted by Soulskill from the it's-always-sunny-in-new-york-city dept.
Nerval's Lobster writes "When hurricane Sandy pummeled New York City last fall, it left a sizable percentage of the metropolis without electricity. Residents had trouble keeping their phones and tablets charged, and often walked across whole neighborhoods to reach zones with power. Come the next disaster, at least a few citizens could communicate a little easier thanks to 25 solar-powered charging stations going up around the city. The stations—known as 'Street Charge' — are the result of a partnership between AT&T, Brooklyn design studio Pensa, and portable solar-power maker Goal Zero (with approval by the city's Parks Department). The first unit will deploy in Brooklyn's Fort Green Park on June 18, followed in short order by others in Union Square, Central Park, the Rockaways, and other locations. Each station incorporates lithium-ion batteries in addition to solar panels; charging a phone to full capacity could take as long as two hours, but the time necessary for a partial charge is much shorter. But a couple of charging stations also won't help very much if half the city is without power: In order to help mitigate the effects of the next hurricane, New York City major Michael Bloomberg has put forward a $20 billion plan for seawalls, levees, and dozens of other improvements. 'Sandy exposed weaknesses in the city's telecommunications infrastructure — including the location of critical facilities in areas that are susceptible to flooding,' reads one section of the plan's accompanying report. The city will harden the system 'by increasing the accountability of telecommunications providers to invest in resiliency and by using new regulatory authority to enable rapid recovery after extreme weather events.'"
Open Source

Jon 'Maddog' Hall On Project Cauã: a Server In Every Highrise 151

Posted by timothy from the cafeterias-and-slaughterhouses-too dept.
Qedward writes with an excerpt at TechWorld about a new project from Jon "Maddog" Hall, which is about to launch in Brazil: "The vision of Project Cauã is to promote more efficient computing following the thin client/server model, while creating up to two million privately-funded high-tech jobs in Brazil, and another three to four million in the rest of Latin America. Hall explained that Sao Paolo in Brazil is the second largest city in the Western Hemisphere and has about twelve times the population density of New York City. As a result, there are a lot of people living and working in very tall buildings. Project Cauã will aim to put a server system in the basement of all of these tall buildings and thin clients throughout the building, so that residents and businesses can run all of their data and applications remotely."
Television

TiVo Series 5 Coming This Fall 178

Posted by timothy from the are-there-even-six-bladed-razors-yet? dept.
WebGangsta writes "The rumor mill continues to grow closer and closer to reality, as The Verge is reporting the upcoming SERIES 5 TiVo will have 6 tuners, support OTA recording (an old TiVo feature being brought back), storage beyond the 2TB limit, and more. While some would say that TiVo today is nothing more than a Patent Holder (albeit a successful one), there's still a market for a cable box that doubles as a streaming player. Is hardware the future of TiVo, or should they go and just license their software to all? And don't get us started on those 'TiVo Buying Hulu' or 'Apple/Google buying TiVo' rumors... that's a different story for a different day."
Intel

Intel Announces New Enterprise Xeons, More Powerful Xeon Phi Cards 57

Posted by Unknown Lamer from the send-me-ten dept.
MojoKid writes "Intel announced a set of new enterprise products today aimed at furthering its strengths in the TOP500 supercomputing market. As of today, the Chinese Tiahne-2 supercomputer (aka Milky Way 2) is now the fastest supercomputer on the planet at roughly ~54PFLOPs. Intel is putting its own major push behind heterogeneous computing with the Tianhe-2. Each node contains two Ivy Bridge sockets and three Xeon Phi cards. Each node, therefore, contains 422.4GFLOP/s in Ivy Bridge performance — but 3.43TFLOPs/s worth of Xeon Phi. In addition, we'll see new Xeons based on this technology later this year, in the 22nm E5-2600 V2 family, with up to 12 cores. The new chips will be built on Ivy Bridge technology and will offer up to 12 cores / 24 threads. The new Xeons, however, aren't really the interesting part of the story. Today, Intel is adding cards to the current Xeon Phi lineup — the 7120P, 3120P, 3120A, and 5120D. The 3120P and 3120A are the same card — the 'P' is passively cooled, while the "A" integrates a fan. Both of these solutions have 57 CPUs and 6GB of RAM. Intel states that they offer ~1TFLOP of performance, which puts them on par with the 5110P that launched last year, but with slightly less memory and presumably a lower price point. At the top of the line, Intel is introducing the 7120P and 7120X — the 7120P comes with an integrated heat spreader, the 7120X doesn't. Clock speeds are higher on this card, it has 61 cores instead of 60, 16GB of GDDR5, and 352GBps of memory bandwidth. Customers who need lots of cores and not much RAM can opt for one of the cheaper 3100 cards, while the 7100 family allows for much greater data sets."
Hardware

SanDisk Focusing More On Desktop and Mobile SATA SSDs, Extreme II Series Tested 71

Posted by samzenpus from the trying-it-out dept.
MojoKid writes "Odds are, if you've purchased anything that uses Flash memory in the last 20 years or so, you already own a piece of SanDisk technology. The company has been in Flash storage since the late '80s and manufactures products used in everything from smartphones to digital cameras. Even though it enjoys a long history in the Flash memory business, SanDisk is perhaps not as well known for its Solid State Drive (SSD) solutions for desktop and mobile PCs. However, SanDisk recently expanded their product stack with new, high-performance SSDs that leverage the company's own NAND Flash memory and Marvell's popular 88SSS9187 controller. The new drives are SanDisk's Extreme II family of SSDs targeted performance enthusiasts, workstations professionals and gamers. The initial line-up of drives consists of 120GB, 240GB, and 480GB models. Performance specifications for the three drives come in at 545MB/s – 550MB/s for reads with write performance from 340MB/s to 510MB/s, depending on density. In the benchmarks, SanDisk's Extreme II SSD showed it has the chops to hang with some of the fastest drives on the market from Samsung, Corsair and OCZ."
Hardware Hacking

Helicopter Parts Make For Amazing DIY Camera Stabilization 78

Posted by timothy from the so-you'll-be-checking-luggage-then dept.
Iddo Genuth writes "Videographer Tom Antos developed an advanced DIY camera stabilizer which can hold almost any DSLR or mirrorless camera steady for video photography. Although this surely isn't as sophisticated (and super expensive) as the professional MVI M10 handheld 3-axis digital stabilized camera gimbal, its still quite impressive especially when you consider it only costs a few hundred dollars rather then tens of thousands — that is if you feel like building it yourself." Antos' design takes advantage of stabilized gimbal systems made for hanging cameras on remote-controlled helicopters, and does a very impressive job for its price.
AI

Robot Dominates Air Hockey, Adapts To Opponents' Playing Style 49

Posted by timothy from the bet-on-the-robot-kid dept.
colinneagle writes "Researchers at Chiba University in Japan have developed a robot that could frustrate teenagers worldwide with its impressive air hockey skills. What's remarkable about this air hockey-playing robot, which is not the first of its kind, is that it can sense human opponents' playing styles and adapt to defend against them. The key is how the computer controlling the robot views its opponent — at a speed of 500 frames per second. From there, the robot uses a three-layer control system to determine motion control, when it should hit the puck, defend its goal or stay still, and a third that determines how it should react to its opponent's playing style."
Transportation

Volvo's Electric Roads Concept Points To Battery-Free EV Future 216

Posted by Soulskill from the i'm-holding-out-for-mr.-fusion dept.
Zothecula writes "While quick charging technology installed at strategic points along a planned route might be a good fit for inner city buses, it's not going to be of much use to electric vehicles that stop infrequently. Volvo sees our future long-haul trucks and buses drawing the juice they need from the road itself, making large onboard batteries a thing of the past. 'The two power rails/lines run along the road's entire length. One is a positive pole, and the other is used to return the current. The lines are sectioned so that live current is only delivered to a collector mounted at the rear of, or under, the truck if an appropriate signal is detected. As an additional safety measure, the current flows only when the vehicle is moving at speeds greater than 60 km/h (37 mph). "The vehicle is equipped with a radio emitter, which the road segments can sense," explains Volvo's Per-Martin Johnansson. "If an electric vehicle passes a road segment with a proper encrypted signal, then the road will energize the segments that sense the vehicle.'"
Data Storage

Facebook's Newest Datacenter Relies On Arctic Cooling 106

Posted by samzenpus from the mountains-of-madness dept.
Nerval's Lobster writes "One year and seven months after beginning construction, Facebook has brought its first datacenter on foreign soil online. That soil is in Lulea, town of 75,000 people on northern Sweden's east coast, just miles south of the boundary separating the Arctic Circle from the somewhat-less-frigid land below it. Lulea (also nicknamed The Node Pole for the number of datacenters in the area) is in the coldest area of Sweden and shares the same latitude as Fairbanks, Alaska, according to a local booster site. The constant, biting wind may have stunted the growth of Lulea's tourism industry, but it has proven a big factor in luring big IT facilities into the area. Datacenters in Lulea are just as difficult to power and cool as any other concentrated mass of IT equipment, but their owners can slash the cost of cooling all those servers and storage units simply by opening a window: the temperature in Lulea hasn't stayed at or above 86 degrees Fahrenheit for 24 hours since 1961, and the average temperature is a bracing 29.6 Fahrenheit. Air cooling might prove a partial substitute for powered environmental control, but Facebook's datacenter still needed 120megawatts of steady power to keep the social servers humming. Sweden has among the lowest electricity costs in Europe, and the Lulea area reportedly has among the lowest power costs in Sweden. Low electricity prices are at least partly due to the area's proximity to the powerful Lulea River and the line of hydroelectric dams that draw power from it."
Hardware

Dell's Haswell-Powered Alienware X51 R2 SFF, a PC Gamer's Console Alternative 154

Posted by samzenpus from the time-to-play dept.
MojoKid writes "Dell recently introduced their Alienware X51 series of small form factor gaming PCs but until now, squeezing in components that were powerful enough for the enthusiast gamer was a significant thermal challenge. Intel's recent Haswell Core processor release, as well as NVIDIA's GeForce 670 series graphics cards have changed the game considerably though. The X51 R2 is shaped similar to to an Xbox 360 Slim, and though it's slightly larger, it would be right at home in a living room setting. Alienware is also bundling Steam Big Picture mode installations with systems as well. Performance-wise, with its latest CPU and GPU upgrades, the system is over twice as fast as the first generation X51, again thanks to Haswell and upgraded NVIDIA GeForce graphics. The console-sized PC is capable of running virtually any current gen DX11 title at full 1920X1080 HD resolution and high image quality settings."
Hardware

World's Smallest Dual-Core ARM Cortex-A9 Module? 42

Posted by timothy from the stick-it-in-your-ear dept.
DeviceGuru writes "Variscite has unveiled what it claims is the world's tiniest Cortex-A9 system-on-module, measuring 52 x 17mm. The Linux- and Android-compatible DART-4460 board is based on a 1.5GHz dual-core TI OMAP4460 SoC, is available with up to 1GB of DDR2 RAM and 8GB eMMC flash, and can run at 400MHz on just 44mA. The module provides interfaces for display (HDMI, RGB, DSI), wireless (Bluetooth, WiFi), audio, camera, USB, and more, and it consumes as little as 5mA in suspend and 44mA while running from a 3.7V battery at 400 MHz, according to Variscite. And in case you were wondering, the iconic Gumstix form-factor is 12 percent larger, at 58 x 17mm."
Upgrades

Intel Removes "Free" Overclocking From Standard Haswell CPUs 339

Posted by timothy from the first-one's-no-longer-free dept.
crookedvulture writes "With its Sandy Bridge and Ivy Bridge processors, Intel allowed standard Core i5 and i7 CPUs to be overclocked by up to 400MHz using Turbo multipliers. Reaching for higher speeds required pricier K-series chips, but everyone got access to a little "free" clock headroom. Haswell isn't quite so accommodating. Intel has disabled limited multiplier control for non-K CPUs, effectively limiting overclocking to the Core i7-4770K and i5-4670K. Those chips cost $20-30 more than their standard counterparts, and surprisingly, they're missing a few features. The K-series parts lack the support for transactional memory extensions and VT-d device virtualization included with standard Haswell CPUs. PC enthusiasts now have to choose between overclocking and support for certain features even when purchasing premium Intel processors. AMD also has overclocking-friendly K-series parts, but it offers more models at lower prices, and it doesn't remove features available on standard CPUs."
Data Storage

SSDs: The New King of the Data Center? 172

Posted by samzenpus from the feeling-solid dept.
Nerval's Lobster writes "Flash storage is more common on mobile devices than data-center hardware, but that could soon change. The industry has seen increasing sales of solid-state drives (SSDs) as a replacement for traditional hard drives, according to IHS iSuppli Research. Nearly all of these have been sold for ultrabooks, laptops and other mobile devices that can benefit from a combination of low energy use and high-powered performance. Despite that, businesses have lagged the consumer market in adoption of SSDs, largely due to the format's comparatively small size, high cost and the concerns of datacenter managers about long-term stability and comparatively high failure rates. But that's changing quickly, according to market researchers IDC and Gartner: Datacenter- and enterprise-storage managers are buying SSDs in greater numbers for both server-attached storage and mainstream storage infrastructure, according to studies both research firms published in April. That doesn't mean SSDs will oust hard drives and replace them directly in existing systems, but it does raise a question: are SSDs mature enough (and cheap enough) to support business-sized workloads? Or are they still best suited for laptops and mobile devices?"
Hardware

Computer Memory Can Be Read With a Flash of Light 69

Posted by Soulskill from the whose-bright-idea-was-this dept.
ananyo writes "A new kind of computer memory can be read 10,000 times faster than flash memory using pulses of light, taking advantage of principles used in solar panel design. Researchers built the prototype device using bismuth ferrite. In conventional computer memory, information is stored in cells that hold different amounts of electric charge, each representing a binary '1' or '0.' Bismuth ferrite, by contrast, and can represent those binary digits, or bits, as one of two polarization states, and, because of its photovoltaic properties, can switch between these states in response to visible light."
Portables

Half a Billion PCs To Ship In 2013, As Desktops and Laptops Dip But Tablets Grow 223

Posted by Soulskill from the should-keep-the-lights-on-for-another-year dept.
An anonymous reader writes "The PC market (desktops, notebooks, and tablets) is expected to see almost half a billion units ship this year, 493.1 million to be exact, representing 7 percent year-on-year growth. Unsurprisingly, the key driver behind this growth will be tablets, accounting for 37 percent of the overall market and seeing 59 percent growth to 182.5 million units. The latest estimates come from Canalys, an independent analyst firm. Nevertheless, it's worth emphasizing that these are estimates, though they do line up with what the broader industry is seeing: desktops are down, laptops are down, but tablets are up."
Data Storage

Will PCIe Flash Become Common In Laptops, Desktops? 372

Posted by Soulskill from the unless-the-singularity-gets-here-first dept.
Lucas123 writes "With Apple announcing that it is now using PCIe flash in its MacBook Air and it has plans to offer it in its Mac Pro later this year, some are speculating that the high-speed peripheral interface may become the standard for higher-end consumer laptops and workplace systems. 'It's coming,' said Joseph Unsworth, research vice president for NAND Flash & SSD at Gartner. The Mac Pro with PCIe flash is expected to exceed 1GB/sec throughput, twice the speed of SATA III SSDs. Apple claims the new MacBook Mini got a 45% performance boost from its PCIe flash. AnandTech has the Air clocked in at 800MB/s. Next year, Intel and Plextor are expected to begin shipping PCIe cards based on the new NGFF specification. Plextor's NGFF SSD measures just 22mm by 44mm in size and connects to a computer's motherboard through a PCIe 2.0 x2 interface. Those cards are smaller than today's half-height expansion cards and offer 770MB/s read and 550MB/s write speeds."
AMD

AMD Making a 5 GHz 8-Core Processor At 220 Watts 271

Posted by Soulskill from the numbers-getting-bigger dept.
Vigile writes "It looks like the rumors were true; AMD is going to be selling an FX-9590 processor this month that will hit frequencies as high as 5 GHz. Though originally thought to be an 8-module/16-core part, it turns out that the new CPU will have the same 4-module/8-core design that is found on the current lineup of FX-series processors including the FX-8350. But, with an increase of the maximum Turbo Core speed from 4.2 GHz to 5.0 GHz, the new parts will draw quite a bit more power. You can expect the the FX-9590 to need 220 watts or so to run at those speeds and a pretty hefty cooling solution as well. Performance should closely match the recently released Intel Core i7-4770K Haswell processor so AMD users that can handle the 2.5x increase in power consumption can finally claim performance parity."

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