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User: Fordiman

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Comments · 2,105

  1. Re:Major changes to automation on Airbus Plans to Expand Cockpit Automation · · Score: 0, Offtopic

    I dunno, but I'd like to have airbus expand _my_ cockpit.

    That was unnecessary.

  2. Re:Uhh.. on High performance FFT on GPUs · · Score: 1

    1) You're confusing the rubes. The generic was applicable for this explanation.
    2) Does not the port of FFT to a GPU mean that it's possible to do a similar thing to the DCT, and thus obtain the gains I mentioned?

  3. Re:Any 64 bit GPU's? on High performance FFT on GPUs · · Score: 1

    oops. I was thinking my times from the bigint lib.

    Though, the floating point trig table can be converted to fractional and - oh, wait.. fractional is pretty process heavy too.

    Ok, GP. The answer is quite a definitive 'No'.

  4. Re:Not Quite on One Small Breath For Man · · Score: 1

    Almost forgot. If you've gotten farming to work on the moon, you've also got plantlife to help with the CO2 removal process.

  5. Re:Not Quite on One Small Breath For Man · · Score: 1

    Removing the CO2 is relatively easy process. Get a SCUBA diver to tell you about the way oxygen scrubbers work. I think it involves a zeolite (quartz crystal is a zeolite) of one or another composition - which, by the way, can be synthesized out of silicon and hydrocarbons.

  6. Re:Not Quite on One Small Breath For Man · · Score: 1

    Wow. Heat the air up to insane temps then cool it down to LOx temps.

    Someone thinks they've got heat transfer physics down better than they do: Sure sure, it's eay to concentrate sunlight, but where does one expel the heat to cool the resulting oxygen?

    *blinks*

    Oh, nevermind. You can use the hot side of the radiator to preheat the feedstock (which would be coming from the now-cooler ring of lens shadow).

    Or, the process could be done is cycles based on the lunar day; during the night, the lunar surface is damned cold - more than enough to cool a compressor's radiator. The lens-shadow area would be even colder.

  7. Re:Isn't energy enough? on One Small Breath For Man · · Score: 1

    It's kinda like, the human race went to the moon, and said, "Man. This place is DULL."

  8. Re:Water on One Small Breath For Man · · Score: 1

    Homan breathing produces CO2. It contains H2O, but it doesn't produce it.

  9. Re:Any 64 bit GPU's? on High performance FFT on GPUs · · Score: 2, Informative

    No.

    Implementing 'big numbers', or numbers larger than the proccessor's spec, is actually quite computationally heavy when compared to the operations you're replacing. As such, a 4x increase in the speed of computation can translate to a (to pull a number from my arse) 0.25x loss of performance when dealing with larger floats.

    However...

    With CPU/GPU cooperation, the floating gap can be handled by using the CPU to generate a lookup table of high-precision trig as, say, a texture, and treating the numbers as mere pointers to an array. Addition is a relatively light bignum math, and with the FFT, you could implement the addition and lookup math quite speedily on the GPU side.

    Of course, from reading in, I'm pretty sure that's what's in-process for higher precision.

  10. Re:Uhh.. on High performance FFT on GPUs · · Score: 5, Informative

    an FFT is a transform that turns a signal (like an audio file) into its frequency components (like a spectrograph). It's used for MP3 compression, sound EQs, jpeg compression, mpeg4 compression, and a number of other things (I use FFTW for tuning my guitar).

    FFTW is the 'Fastest Fourier Transform in the West', a cute name for the work of a number of graduate students who use several techniques to turn the FFT from 'Numerical Recipes in C' into a freaking speed daemon.

    GPUFFTW is much the same thing, but ported to your video card's GPU - which is generally more optimized for doing the 'apply a floating point matrix to an array' thing - thus speedin the FFTW up even more while relieving the main processor from doing the work.

    If you don't have a high-powered video card, this means nothing for you. If you do, it means the above operations (compression, spectrum analysis, etc) can be done faster and without eating up processes.

  11. Re:WTF? Who are the suckers? on Infinium Tries 'Phantom' Name Change · · Score: 1

    Hmph.

    Given a month, some parts, and a soldering iron, *I* can design a 'next gen' console. These guys have scammed nearly $70 billion and, aside from their CEO, I'd be completely nonplussed to find out they have dodged out to the caymans somewhere, where they 'telecommute' by responding to emails from venture capitalists.

  12. Re:Not necessarily on Space Elevator An Impossible Dream? · · Score: 1

    "For example, if a cult released a retroviral pandemic that altered everyone's DNA to make people (and their offspring) incurious, then people wouldn't want to question or to do science. "

    I could have sworn that sort of thing happens in every RPG before I get a chance to play. The people in those games are so... static...

  13. Re:Damaged by Oxygen? on Space Elevator An Impossible Dream? · · Score: 1

    Therefore any coating or protection from whatever may be hazardous for our lift needs also to be developed and is a topic for the future. But may be in far future...

    Nanotubes are conductive, yes? Would zincing at the base not work?

  14. Re:Another way? on Space Elevator An Impossible Dream? · · Score: 1

    The cable will be held taut by its own weight, mostly; the stresses on it will be such that much of its strength will be used in holding itself together against tidal forces. As such, making redundant cables, while allowing a higher payload at the space end, would not improve the strength of a ground-to-space cable.

  15. Re:It's total hogwash on BSA Claims 35% of Software is Pirated · · Score: 2, Interesting

    I had a pirate copy of photoshop. The I noticed the Gimp was near as good. Had a pirate of MS Visual Studio - until I picked up Dev C++. Sure, the open source stuff is sometimes a bit less functional than the commercial - but me? I implement the features I want.

  16. Re:Ummmm why? on MS Proposes JPEG Alternative · · Score: 1

    Look, I realize all that. I'm just saying it's rare and appreciated to see a comment posted by someone with somewhat more than Calc I under their belt (though, to be honest, I moved kinda directly into crypto, and only touched on fourier transforms in college).

    Meanwhile, as a tit-for-tat, my first introduction to an actual fourier transform algorithm was when I was investigating how spectrum analysis is done (I do some sound tech work and some programming, and I was learning to combine the two). The conclusion that any signal can be built from sine waves of disparate frequencies seemed obvious from the perspective of someone who has been looking at spectrum analyses all day, but the transformation from ineffable signal to recognizable spectrum seemed a magical process.

    I'm still not sure how it's done. I went through and assembly-optimized a base-2 DFT from 'Numerical Recipes in C', but I still don't exactly understand how the math works (though I will read through the link). Still, the output is invaluable for everything from computer-assisted music transcription to guitar tuning to my little stock-market paper experiments.

  17. Re:But on MPAA Being Sued For Allegedly Hacking Torrentspy · · Score: 1

    Better than most copyright licensing. You can't redistribute it at all.

    Which brings us to te crux of this purile argument:

    Why do piracy advocates like and rabidly protect the GPL while disrespecting others' copyrights?

    Read your EULA. Do you think anyone who expects garbage like that deserves your respect?

  18. Re:Ummmm why? on MS Proposes JPEG Alternative · · Score: 1

    Not too many people here actually have something intelligent to say, and you went and said it.

    No, no arguing. You're getting friended.

  19. Re:Ummmm why? on MS Proposes JPEG Alternative · · Score: 1

    *snort*

    What a little bitch. How about you stop policing other people's comments and waste a mod point or two instead?

  20. Re:Ummmm why? on MS Proposes JPEG Alternative · · Score: 3, Interesting

    I can confirm that PNG and MNG both work properly in IE7 Beta.

  21. Re:But on MPAA Being Sued For Allegedly Hacking Torrentspy · · Score: 1

    "It's wrong for the MPAA to dare sue or do anything at all to prevent rampant unauthorized copying of its materials, even though it owns the copyrights to all of them."

    Not wrong, just annoying.

    "It's perfectly okay for torrent piracy groups to sue the MPAA, because it's funny and ironic! Ha ha! Take that, MPAA!"

    Different kind of suit.. This one's a privacy issue; they ring more loudly with more people.

    "It's also perfectly okay to sue when GPL code gets ripped off, because stealing GPL code is wrong. Even though we say "piracy isn't theft," we call it "stealing" when the GPL is violated."

    Unrelated, but here's the thing: the GPL is not a copyright. It's a license restriction that says the licensed material must have no other license restrictions. Copyright's a convenient place for it to reside, but not the basis of its workings.

    "Piracy is only okay when we're stealing from a group we've been told to hate on Slashdot."

    Close. Piracy is only okay when I find it convenient and not morally objectionable. And please, please say something about the feds and breaking down my doors.. those are the funniest, most mislead comments I get to see on slashdot that don't come from creationists and apple fanboys.

  22. Re:But on MPAA Being Sued For Allegedly Hacking Torrentspy · · Score: 1

    Sheep.

  23. Re:There's a point to be made on Pact Not to Use Image Constraint Token Until 2010? · · Score: 1

    4-5 hours is a lot of time for a simple operation. #1 is infeasable for anyone who resides completely in Linux (I would, for example, have over 70G of backing up to do). The freedos/ReactOS (or BartPE, since I have a copy laying around) option would be best.

  24. Re:There's a point to be made on Pact Not to Use Image Constraint Token Until 2010? · · Score: 1

    I was going to suggest #4, actually.

  25. Re:Sweet! on Trolltech Going Public · · Score: 1

    Unfortunately, that file is broken (ie: in a propietary format) - which is kinda weird for its subject matter.