For all the money and effort poured into supercomputers, their lifespans can be brutally short. See IBM's Roadrunner as a textbook example: the 116,640-core cluster was smashing records just five years ago, and yet it's already considered so behind the times that Los Alamos National Laboratory is taking it out of action today. Don't mourn too much for the one-time legend, however. The blend of Opteron and Cell processors proved instrumental to understanding energy flow in weapons while also advancing the studies of HIV, nanowires and the known universe. Roadrunner should even be useful in its last gasps, as researchers will have a month to experiment with the system's data routing and OS memory compression before it's dismantled in earnest. It's true that the supercomputer has been eclipsed by cheaper, faster or greener competitors, including its reborn Cray arch-nemesis -- but there's no question that we'll have learned from Roadrunner's brief moment in the spotlight.

Filed under: Science

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Via: NBC

Source: Los Alamos National Laboratory

When the Xserve joined the great server farm in the sky, Mac-minded datacenters everywhere were left without a true rackmountable computer; even the current Mac mini wasn't designed for those kinds of tight spaces. Enter the purposefully anonymous Steve, who just filled the gap with one of the cleverer solutions we've seen yet. He and vendors have developed custom 1U shelving, cooling from car radiators and four-in-one power cables that, combined, fit 160 Mac minis (and a managing Xserve) into one enclosure without cooking the machines to death. With each Mac mini carrying a quad Core i7 and an SSD, Steve now has twice as many cores (640) as an equivalent Xserve cluster despite lower power consumption and a 45-second, network-controlled reboot -- all big helps to his unnamed employer's software development, even with the lack of built-in redundancy for Apple's tiny desktop. As many gritty details as Steve can share are available at the source.

Filed under: Desktops, Apple

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Via: Hack A Day

Source: Steve's Blog

We've seen some large-scale simulations, including some that couldn't get larger. Simulated cellular networks are still a rare breed, however, which makes Sandia National Laboratories' MegaDroid project all the more important. The project's cluster of off-the-shelf PCs emulates a town of 300,000 Android phones down to their cellular and GPS behavior, all with the aim of tracing the wider effects of natural disasters, hacking attempts and even simple software bugs. Researchers imagine the eventually public tool set being useful not just for app developers, but for the military and mesh network developers -- the kind who'd need to know how their on-the-field networks are running even when local authorities try to shut them down. MegaDroid is still very much an in-progress effort, although Sandia Labs isn't limiting its scope to Android and can see its work as relevant to iOS or any other platform where a ripple in the network can lead to a tidal wave of problems.

Filed under: Cellphones, Wireless, Mobile, Alt, Google

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Via: New York Times

Source: Sandia National Laboratories

If you're a computational engineer, there's no question about what you do with the Raspberry Pi: you make a supercomputer cluster. Researchers at the University of Southampton have followed their instincts and built Iridis-Pi, a tiny 64-node cluster based on the Raspberry Pi's usual Debian Wheezy distribution and linked through Ethernet. While no one would mistake any one Raspberry Pi for a powerhouse, the sheer number of networked devices gives the design both some computing grunt and 1TB worth of storage in SD cards. Going so small also leads to some truly uncommon rackmounting -- team lead Simon Cox and his son James grouped the entire array in two towers of Lego, which likely makes it the most adorable compute cluster you'll ever see. There's instructions to help build your own Iridis-Pi at the source link, and the best part is that it won't require a university-level budget to run. Crafting the exact system you see here costs under £2,500 ($4,026), or less than a grown-up supercomputer's energy bill.

Filed under: Desktops

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Via: TechEye.net

Source: University of Southampton

Radio telescope operators have as much of a problem coping with the avalanche of data as getting that information in the first place. The Victoria University of Wellington is all too aware and is leaning on IBM for a powerful (if very tongue-tying) iDataPlex dx360 M3 compute cluster to sift through the deluge at the upcoming Murchison Widefield Array. Combined, the 4,096 array antennas probing deep space and solar atmospherics will have the Xeon-based cluster tackling signal data to the tune of 8GB per second, and about 50TB per day -- that's a Nexus 7's worth of astronomy faster than you can sneeze, folks. A 10Gbps network connection will feed the results to Perth to save scientists a roughly 435-mile trek. Construction is still in mid-stride, but the $51 million Australian ($52.2 million US) being spent on the Murchison array may be worthwhile if it helps solve the riddles of star formation and solar flares.

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Michael Larabel already had a 12-core PandaBoard-based mini-cluster under his belt. Clearly, the only way to outdo that is to go bigger, better and greener. The Phoronix founder took 48 of the OMAP 4460-powered boards, got them up and running on Ubuntu 12.04 and chained them together in a massive ARM cluster of Linux goodness. Even with 96 cores chugging along at 1.2GHz the cabinet of tiny computers used only 200 watts -- a threshold Larabel was able to meet with a solar panel strapped to a handtruck. Sadly we don't have any performance figures yet, but MIT, where the little ARM experiment was conducted, should be releasing benchmarks and video soon enough. In the meantime, hit up the source link for some more details and photos of this 96-core, solar-powered wonder.

Filed under: Alt

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Filed under: Gaming

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Filed under: Desktops, Gaming

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