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2059785 comment

Comment Re:Time for vector processing again (Score 2, Insightful) 251

by ipoverscsi on Friday December 05, 2008 @10:58AM (#26002699) Attached to: IEEE Says Multicore is Bad News For Supercomputers

Faster computation doesn't help communication-limited tasks. Faster communication doesn't help computation-limited tasks.

Computation is communication. It's communication between the CPU and memory.

The problem with multicore is that, as you add more cores, the increased bus contention causes the cores to stall making so they cannot compute. This is why many real supercomputers have memory local to each CPU. Cache memory can help, but just adding more cache per core yields diminishing returns. SMP will only get you so far in the supercomputer world. You have to go NUMA for performance, which means custom code and algorithms.

501694 submission

Submission + - Components, Builds and Configuration Management

Submitted by command.com on Sunday February 03, 2008 @01:14AM

command.com writes: I've recently been placed in charge of configuration management for a modest programming team in a Fortune 500. As a software engineer, I've used version control software before, but I've never had to do it for 100 projects. The repository contains multiple products managed by different development teams on independent release schedules, and some products used shared components (DLLs). The current repository is a mess — you basically have to check out everything in order to build some products because there's no telling what dependencies it's pulled in — and it needs to get reorganized to allow us to achieve CMMI compliance. Best practices on managing repositories of this size and complexity are hard to come by, so I'm looking for some some real world experience on how other people have tackled this problem. How did you organize project folders (e.g. src, bin, include directories per project)? How was the nightly build affected by shared components? How did you track and manage dependencies? If you had to make deployment packages (MSI), how did you manage the shared components?

1488455 story

Bad Password Allowed Swedish Watergate 248

Posted by CmdrTaco on Wednesday September 06, 2006 @11:17AM from the thats-why-my-password-is-swordfish dept.

fredr1k writes "The Swedish Watergate reported earlier this week was possible because of the usage of terrible weak passwords (Swedish) and a not functional IT policy. The Swedish newspaper Göterborgs-Posten reports the source of the password was a partymember who's account was "sigge" with password "sigge" and was "stolen" in march this year. Seasoned Slashdot readers would call it "a-not-so-hard-to-crack-password". "

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