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
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.
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
Sandia Labs' MegaDroid project simulates 300,000 Android phones to fight wireless catastrophes (video) originally appeared on Engadget on Wed, 03 Oct 2012 17:24:00 EDT. Please see our terms for use of feeds.
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