Please create an account to participate in the Slashdot moderation system

 



Forgot your password?
typodupeerror
Networking

MIT May Have Just Solved All Your Data Center Network Lag Issues 83

Posted by Unknown Lamer
from the hierarchy-beats-anarchy dept.
alphadogg (971356) writes A group of MIT researchers say they've invented a new technology that should all but eliminate queue length in data center networking. The technology will be fully described in a paper presented at the annual conference of the ACM Special Interest Group on Data Communication. According to MIT, the paper will detail a system — dubbed Fastpass — that uses a centralized arbiter to analyze network traffic holistically and make routing decisions based on that analysis, in contrast to the more decentralized protocols common today. Experimentation done in Facebook data centers shows that a Fastpass arbiter with just eight cores can be used to manage a network transmitting 2.2 terabits of data per second, according to the researchers.

Comment: Re:Car driver ethics: What do I hit? (Score 2) 800

by scdeimos (#46937695) Attached to: Autonomous Car Ethics: If a Crash Is Unavoidable, What Does It Hit?

Not necessarily. A larger car can have bigger crumple zones. If its crumple zones are twice the size of the small car, then the acceleration that you'll experience in the collision is a lot less and so there's a greater chance everyone will survive (assuming that the relative impact speeds will be the same).

Don't let facts get in the way of a good story. :) While survivability is about equal for SUV vs SUV and car vs car impacts, studies have shown that in SUV vs car impacts the passengers of the car are 7.6 times more likely to die.

Armed with this information an autonomous vehicle trying to protect everybody should: (a) choose the impact with the least inertia for all concerned (i.e.: go for the car travelling in almost the same direction as the autonomous vehicle as opposed a car travelling in an opposite direction) and (b) for a choice of head-on impacts, prioritize impacting the car with a mass closest to its own. An autonomous vehicle biased towards protecting its own driver should target the smaller vehicle... but this will inevitably lead to "I've got the biggest autonomous vehicle" wars with people trying to protect themselves from other vehicles as we've seen happen with SUVs.

REF: http://www.consumerreports.org.../p

Comment: Re:Stop (Score 1) 349

by scdeimos (#46457971) Attached to: Crowdsourcing Confirms: Websites Inaccessible on Comcast

"Stop using your ISP's DNS" is not always the right answer.

If I use Google's public DNS servers it breaks content distribution networks like Akamai. For example, if I use Google Public DNS then *.phobos.apple.com addresses for iOS and OSX updates resolve to IPs inside NTT (Tokyo, Japan) and downloads are exceedingly slow (high latency, dropped packets, etc.). If I use my ISP's DNS server it just so happens they host a set of Akamai nodes and the *.phobos.apple.com addresses will resolve to IPs only 2 or 3 hops away, so downloads will saturate my SDSL connection.

Comcast should just acknowledge that they've fucked up and fix their servers.

Crime

South Carolina Woman Jailed After Failing To Return Movie Rented Nine Years Ago 467

Posted by samzenpus
from the beyond-the-late-fee dept.
An anonymous reader writes "Could you imagine being arrested for failing to return a movie you rented 9-years earlier? Well that's just what happened to one South Carolina woman. 'According to a Feb 13 arrest report, 27-year-old Kayla Finley rented Monster-in-Law in 2005 from now defunct video store Dalton video. The woman failed to return the video within the 72 hour rental limit, eventually leading up to her arrest 9 years later.'"

Comment: Re:So everybody here was confused? (Score 1) 251

by scdeimos (#46240813) Attached to: 'CandySwipe' Crushed: When Game Development Turns Nasty
Just a casual browsing of the iTunes App Store makes me wonder what the real story is. If you click on Show All Versions for each of the free/paid iPhone/iPad versions of CandySwipe they were first published in May 2012 (not even close to 2010), abandoned, then there were updates to all of them around 27/28 Jan 2014, and now there is all this debate. Was there a PC/Android version published earlier?

Comment: Re:Big deal. (Score 1) 65

by scdeimos (#46240645) Attached to: Australian Police Deploy 3D Crime Scene Scanner

Yeah, describing it as "handheld" is kind of misleading. The photo in TFA shows *just* the handheld part, there's a much larger piece of equipment attached via cable and worn backpack-style...

http://research.ict.csiro.au/events/event-gallery/cebit-germany/cebit-germany-2012/DSC_3736.JPG/image_view_fullscreen

Comment: Bad analogy (Score 1) 76

by scdeimos (#46240549) Attached to: China's Jade Rabbit Fights To Come Back From the Dead

Should Jade Rabbit make a full recovery, it would cap another success for space exploration, which has seen NASA's Opportunity Mars rover, currently exploring the red planet, far outlast its expected lifespan."

Opportunity far outlived its projected 90 day operational lifetime. Jade Rabbit was supposed to go 3 months and has already gone belly-up just a month into it.

Comment: Re:Code. (Score 1) 111

by scdeimos (#45823185) Attached to: Intel Releases 5,000 Pages of Open-Source Haswell Documentation

Put a hardware driver author in front of a documentation pack and a compiler, and tell him to write a driver, and he'll tell you to fuck off.

My how things have changed. I remember being handed register documentation for StarPort 16-, 32- and 64-port serial cards and being asked to write FOSSIL drivers for them. And I had to supply my own compiler and logic analyser.

Imagination is more important than knowledge. -- Albert Einstein

Working...