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Businesses

Ask Slashdot: Do You Trust When a Vendor Tells You To Buy New Parts? 156

Posted by timothy
from the don't-clench dept.
Nerval's Lobster writes "Roughly 85 percent of IT managers polled by Forrester said they would hold onto networking infrastructure longer, but vendors retire products prematurely in an effort to force customers to upgrade. In a response that may seem familiar to anyone who's ever been pressured into buying a maintenance contract—either by an enterprise vendor or a major electronics retailer—over 80 percent of the 304 respondents said they don't like the misrepresented cost savings, new fees, and inflexible pricing models—but buy the products anyway. One of the survey's interesting points is that IT decision makers aren't willing to contradict the vendor. The uncertainty seems to come from the fact that the vendor may in fact be right—and a customer who contradicts what they're saying may end up shouldering the blame if the equipment goes south. It's the 'you never got fired for buying IBM' argument, applied to the networking space. The problem, of course, is that the vendor often works for its own agenda. Do you upgrade when the vendor (or reseller) suggests you do so? Or do you stick to your own way of doing things?"
Hardware

Ask Slashdot: Building a Cheap Computing Cluster? 160

Posted by timothy
from the when-freecycle-just-doesn't-make-sense dept.
New submitter jackdotwa writes "Machines in our computer lab are periodically retired, and we have decided to recycle them and put them to work on combinatorial problems. I've spent some time trawling the web (this Beowulf cluster link proved very instructive) but have a few reservations regarding the basic design and air-flow. Our goal is to do this cheaply but also to do it in a space-conserving fashion. We have 14 E8000 Core2 Duo machines that we wish to remove from their cases and place side-by-side, along with their power supply units, on rackmount trays within a 42U (19", 1000mm deep) cabinet." Read on for more details on the project, including some helpful pictures and specific questions.

Comment: No, not SHA-256 (Score 1) 84

by jonabbey (#43037279) Attached to: Australian Tax Office Stores Passwords In Clear Text

You don't want to use SHA-256 by itself, because that's a high speed unsalted hash algorithm.

Ulrich Drepper created a good password crypt algorithm which incorporates SHA-256 or SHA-512, but the features that make it resistant to dictionary attack are the salt and the massive iterations over SHA to slow down the algorithm.

BCrypt uses the same techniques to slow down dictionary attacks.

Comment: BCrypt or SHACrypt256/SHACrypt512 (Score 1) 84

by jonabbey (#43037207) Attached to: Australian Tax Office Stores Passwords In Clear Text

The OP is right that there's no point in using a high speed naked hash algorithm, but BCrypt isn't the only good alternative.

There's also SHACrypt-256 and SHACrypt-512, which have been supported in GNU LibC since October 2007.

Wikipedia has a pretty thorough discussion of the various password hash routines that are in use on Unix/Linux systems, for that matter.

Comment: Re:NOT (Score 1) 105

by jonabbey (#42889333) Attached to: Oracle Open Sourcing JavaFX, Including iOS and Android Ports

I do know the difference between a Java stack trace and a VM which crashes with a dump of the CPU registers. Platform was Ubuntu 10 LTS and the Oracle JVM.

I also checked the PDF parser. I does not use any native stuff.

Well, I took you at your word about crashing the VM. I was just curious how long ago it was, whose VM you were using, etc.

Comment: Re:JavaFX replaces Swing? (Score 1) 105

by jonabbey (#42887949) Attached to: Oracle Open Sourcing JavaFX, Including iOS and Android Ports

Huh, who knew. Last I checked, JavaFX was built on top of Swing. Apparently that may have changed with 2.0.

Or maybe not. I can't tell.

But one thing seems pretty clear from screenshots: your JavaFX applications will fit in with the native desktop just about as well as your Swing applications did. Which is to say, "not at all."

JavaFX is its own thing, but they've made it possible to include JavaFX panels in Swing apps.

Comment: Re:JavaFX 2 nice evolution for Swing (Score 1) 105

by jonabbey (#42887621) Attached to: Oracle Open Sourcing JavaFX, Including iOS and Android Ports

Swing is definitely functional, and Nimbus doesn't make me want to gouge my eyes out, but it's legacy as a cancerous outgrowth of AWT hurts it too much. It's amazing what they were able to do with that kind of foundation, but it's past time for something better.

The Internet

Why You'll Pay For Netflix — Even If You Don't Subscribe To Netflix 292

Posted by Soulskill
from the enforced-infrastructure-enhancement dept.
Velcroman1 writes "At the 2013 Consumer Electronics Show, Netflix announced Super HD, an immersive theatrical video format that looks more lifelike than any Web stream, even competing with Blu-Ray discs. But there's a costly catch. To watch the high-definition, 1080p movies when they debut later this year, you'll need a specific Internet Service Provider. Those on Cablevision or Google Fiber are in; those served by Time Warner or a host of smaller providers will be out of luck. But regardless of whether you subscribe to Netflix, you may end up paying for it, said Fred Campbell, a former FCC legal adviser who now heads The Communications Liberty & Innovation Project think tank. 'Instead of raising the price of its own service to cover the additional costs, Netflix wants to offload its additional costs onto all Internet consumers,' Campbell said. 'That's good for Netflix and bad for everyone else in the Internet economy.'"
Programming

Ask Slashdot: What Practices Impede Developers' Productivity? 457

Posted by Soulskill
from the mitten-mondays dept.
nossim writes "When it comes to developers' productivity, numerous controversial studies stress the differences between individuals. As a freelance web developer, I've worked for a lot of companies, and I noticed how some companies foster good practices which improve individual productivity and some others are a nightmare in that regard. In your experience, what are the worst practices or problems that impede developers' productivity at an individual or organizational level?"
Republicans

Congressman Introduces Bill To Ban Minting of Trillion-Dollar Coin 1059

Posted by Unknown Lamer
from the supervillians-gather-in-protest dept.
Dainsanefh writes with news that the new Congress isn't wasting any time getting back to work. From the article: "Lawmakers are still positioning themselves for a debt ceiling fight in a few months, but one Republican congressman wants to snuff out a particular idea immediately: the U.S. Treasury minting $1 trillion platinum coins to avert a debt ceiling showdown. Rep. Greg Walden (R-Ore.) has introduced a bill to specifically ban President Barack Obama from minting the coins. The trillion-dollar coin has been previously discussed on Slashdot:"
Google

Google Wants To Be a Wireless Carrier 151

Posted by samzenpus
from the google-calling dept.
zacharye writes "Google has already conquered the software side of smartphones and now the technology giant is reportedly in talks to take over the air waves. A report on Thursday claims that Google has held talks with satellite television provider Dish Network regarding the possibility of a venture that would see Google launch its own cellular network and compete directly with the likes of Verizon and AT&T."
Science

Volcano May Have Killed Off New Bioluminescent Cockroach 108

Posted by samzenpus
from the shine-on-you-crazy-beetle dept.
terrancem writes "A newly discovered light-producing cockroach, Lucihormetica luckae, may have already been driven to extinction by a volcanic eruption in Ecuador. The species, only formally described by scientists this year, hasn't been spotted since the Tungurahua Volcano erupted in July 2010. The new species was notable because it represented the only known case of mimicry by bioluminescence in a land animal. Like a venomless king snake beating its tail to copy the unmistakable warning of a rattlesnake, Lucihormetica luckae's bioluminescent patterns are nearly identical to the poisonous click beetle, with which it shares (or shared) its habitat."

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