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Programming

Submission + - Sorting Algorithm Breaks Giga-sort Barrier (google.com) 2

An anonymous reader writes: Researchers at the University of Virginia have recently open sourced an algorithm capable of sorting at a rate of one billion (integer) keys per second using a GPU. Although GPUs are often assumed to be poorly suited for algorithms like sorting, their results are several times faster than the best known CPU-based sorting implementations.
The Internet

Submission + - Duke research experiment disrupts Internet (networkworld.com)

alphadogg writes: An experiment run by Duke University and a European group responsible for managing Internet resources went wrong Friday, disrupting a small percentage of Internet traffic.

The damage could have been far worse however, and the incident shows just how fragile one of the Internet's core protocols really is, security experts say.

The problem started just before 9 a.m. Greenwich Mean Time Friday and lasted less than half an hour. It was kicked off when RIPE NCC (Reseaux IP Europeens Network Coordination Centre) and Duke ran an experiment that involved the Border Gateway Protocol (BGP) — used by routers to know where to send their traffic on the Internet. RIPE started announcing BGP routes that were configured a little differently from normal because they used an experimental data format. RIPE's data was soon passed from router to router on the Internet, and within minutes it became clear that this was causing problems.

That shouldn't have happened on systems that were properly configured to support BGP, wrote RIPE NCC's Erik Romijn in a note http://www.merit.edu/mail.archives/nanog/msg11505.html posted to the NANOG (North American Network Operators Group) discussion list. But nonetheless for a brief period Friday morning, about 1 percent of all the Internet's traffic was affected by the snafu, as routers could not properly process the BGP routes they were being sent.

Comment Re:Noise Complaints (Score 1) 459

I've come across this very topic in the course of my work (I'm an aerospace engineer) and the general consensus on the issue (at least for the Hybrid Wing Body) is that having the engines mounted above the wing like most proposed designs currently do results in a drastic reduction in engine noise in an airport setting.

Comment Wrong audience (Score 5, Funny) 407

Slashdot is a great engineering community; what other insights do you have on the bridge situation?

No, Slashdot is mostly made up of computer janitors; the greatest insight you'll get out of most of the posters here is, "hurrr durr, the bridge must've been running Windoze! LOL!", with maybe a little "omg the twin towers were collapsed by EXPLOSIVES!!!!"-style conspiracy theory and "THE GOVERNMENT IS BAD!!!" braindead libertarianism thrown in for color.

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