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User: JollyFinn

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  1. One SMALL key point... on Engineers Devise Invisibility Shield · · Score: 1

    It was probably designed for RADAR avoidance technique, and visible light is more of a anomaly of the real thing. 2ndly. I'm just curious, what if we would have millions's of those small objects that are invisible to visible light, creating the aircraft frame. And any internal components would be painted black. So it would improve the camoflage of the aircraft, by making its wings invisible.

  2. Re: Algorithms, Not Stupid Processor Tricks on Optimizations - Programmer vs. Compiler? · · Score: 1

    The better O(n) algorithm runs much faster on big datasets.
    O(n) vs O(n) big difference if the n==10 000, you can count how much faster

    Easy if you KNOW that number of elements you are going to operate >20 then almost any n^2 algorithm will beat 2^n; Think. Difference between 1 million vs 400 iterations.

    There are way more shorting algorithms than bubble sort or quicksort. I personally dislike both of them, quicksort has buble sort slowness when you sort already sorted arrays, but with all the increased overhead assosiated with it. Basicly quicksort is not theoreticly superiour algorithm it was found out practicly really fast at some point of time. It beats bubble sort when done with really unordered data on large arrays, but there are algorithms that don't have such weaknesses and that can get same average case. Quick sorts WORST case is O(n^2) which is bubbleshorts complexity always.
    Quickshorts best case is O(n) And average case O(n log n) for instance mergesort and heap sort have O(n log n) Always.
    I think it was the quickshorts data dependence that got you not the weakness of recursion. It got the overhead, but without the threoretical advantage it hold. The most important to know is HOW LARGE datasets you are about to sort. How ever the code cache issues might make it simpler to use just one shorting algorithm and that makes it NOT quicksort.
    BTW: C library quickshort is not the most optimized way to do it anyway, it has overhead of additional function call for comparison operation and if you know your data type youd better do your own quicksort. Still I prefer mergesort or heapsort over quicksort, since both of them are more general purpose.

  3. Re:mysql bad at disaster recovery? on Power Outage Takes Wikimedia Down · · Score: 1

    >Is mysql the only dbase like this or does postgres get corrupted as well during unplanned downtime?
    >If I recall from using MSSQL servers , we never had a problem like this. We would simply reboot the
    >servers and not worry about tables being left in unrecoverable states.

    Okay lets put it in other words. The database designed to ONLY run on MS windows can handle system crashes FAR better than database that is designed for unix mainly. Hmmm. Is there are reason for this? Can anyone quess why its the case?

  4. Re:White elephant? on Intel Develops Hardware To Enhance TCP/IP Stacks · · Score: 1

    What the heck. Few factoids
    The main CPU runs multiple things.
    The cost of network traffic are cache flushes and context switches. And so on.
    General purpose CPU is much weaker than special purpose CPU, if you can parallerize at all.
    And MFG costs my ass. These things should be relatively small.

    Think following scenario.
    Network interrupt->context switch-> move lot of data around and compute some what-> context switch.
    To finish what I was doing, and then compute the thing that I just put in the line. (unless some other processor does it first ;)
    VS
    I finished of doing previous thing, I'll check if there is anything new for me to crunch on, if not I'll yield the processor voluntarily in case some other thread needs it, but there is something so I can continue running my code from trace cache that would of been flushed in context switch...
    I can see order of magnitude difference on those two approaches. Remember TLB miss is REALLY expensive, as a instruction cache misses, and getting stuff from mainmemory.

  5. Re:Escaping the Palladium Jail? on QEMU Accelerator Achieves Near-Native Performance · · Score: 1

    I misread your post slightly. For a slight shock.

    Argh. "Drop jhashdfh Linux". Too many lawyers of abstraction. ;^)

  6. Re:4*250gig server + xbox xbmc = the same on Kaleidescape CEO Speaks Out About CSS Lawsuit · · Score: 1

    If I had a 10M$ house there probably would be well over 1M$ yearly income?
    Assume 220 workdays, and 9 hour daym, thats 2000 hours of work per year. Now with 2M$ yearly income you could really assume each hour is worth 1000$ .
    Now for ANYTHING that takes my time away from what I wanted to do really should have a return way over 1000$ becayse at that point free time is REALLY valuable, and you don't want to waste your time doing things your not interested just to save "little" money since you earn quite a lot anyway.
    For a millionare, saving 20k$ for spending few hours sounds about same as saving 2$ for spending few hours sound for me.

  7. Re:Thinking Inside The Square on Smart People Choke Under Pressure · · Score: 1

    One thing for you to know, is that there is no such thing as disk-full error in real life. Only problems with putting stuff in memory, and retrieving it. One condition that might be mistaken is having a bad diet and stuffing too much information at one time, so you get short time information overload, when your brain needs more nutritions in short period of time than it can get.

  8. Re:Only two kinds of people? on Smart People Choke Under Pressure · · Score: 1

    Working memory is capability of keeping things inside consiousnes.
    There is big difference on guys with only 5 registers and guys with 10 registers for temporary values, for general tasks. The average is about 7 objects. Now they split it to TWO groups one with higher and on with lower capacity to keep things in working memory [VERY SHORT TERM] so there where test of that, it was quite precise what they claimed as smart. Capability of holding more things inside very short term memory. Probably tested, by having n random things come in few seconds, and then the subject would output the things IMMEDIATELY AFTER INPUT. Then repeated n times for different kinds of inputs and after a while you can see that average from 5-10 dependenging on person. Each person has few groups where they can remember more, because they have learned to pack things in a single memory location. Like considering a pair of number as single object or some other packaging algorithm to consider bigger objects of a one group. And each grouped location takes 1 working memory slot.

  9. Re:Thinking Inside The Square on Smart People Choke Under Pressure · · Score: 2, Insightful

    You made misconception of working memory and memorizing things.
    Working memory is tiny little cache that fits 7+-2 items, thats the memory people use to operate things. Its not a permanent storage its few registers to keep few things in your conciusness, for quick recovery.
    However that working memory can fit ANYSIZED objects there. So with experience on certain subject you start considering bigger compounds as single object, and with that you can fit bigger things in your working memory.
    Consider you have L1cache, RAM and DISK. L1cache is working memory that well you erase all the time, when you operate on things, and it lasts few seconds, RAM is short term memory that holds for half hour or something similar [Or less my disk isn't error free], and long term memory is disk where people do MEMORIZE things.

    Smart people have good working memory and short time memory while knowledgeable people have written lots of stuff to their permanent storage.

    Now I have good working memory and reasonable RAM but my disk has lots of bad sectors, and error correction coprocessor that might retrieve the data in a few hours too late...

  10. Re:Hello world of today on Where Have All The Cycles Gone? · · Score: 1

    From wikipedia:

    CREATE TABLE message (text char(15));
    INSERT INTO message (text) VALUES ('Hello, world!');
    SELECT text FROM message;
    DROP TABLE message;

    Do I need to say more?
    If my specialty would of been those web development things, The one and true way to do helloworld is having JAVA program making a dynamic html page, based on SQL queried text, and "hello world" resides in SQL database. Thats THE WAY OF THE FUTURE!

    On other hand, I stay in C and assembler and creating hand tuned code. Perhaps doing my own memory manager to do the memory management.

  11. Re:SWG? on A Theory of Fun for Game Design · · Score: 1

    You forgot something really important that everyone knows.
    Bill Gates and free software revolution.
    Richard Stallman and The benefits of creating propetiary software.

    Okay not everyone, but most certainly all slashdotters. GWB was onlyone on your list that I've recognized.

  12. Re:latency? on Rambus Takes Another Shot At High-End Memory · · Score: 1
    using it for graphics cards would be terrible if it has higher latency, graphics processing requires constant "random" access because rendering a life-like scene requires knowing the state of everything in line of sight, as well as ambient and reflected lighting.

    Just like the new Geforce 6200 that utilizes pci-express and streams its textures from main memory ;) There is quite possible to increase latency tolerance and graphics cards happen to be one application that is RELATIVELY latency insensitive in a sence that you can HIDE the latency. I'm not claiming its easy, but I claim that nVidia already does already know how to hide memory latency for Gfx.

  13. Re:Sexist PIG! on New Standard Keyboard · · Score: 1

    Well this conversation is nice example of modern english language. There is plenty of context dependent words used these days, especially when men are talking about women and sexism. You can guess what I first parsed what you said, as I'm not native english speaker and my imagination works that way, and after all the talk was about a female, and sexism.

    I say fuck it all
    pussy who bows to minority pressure

  14. Re:just a natural occurnance... on A Countdown To Global Catastrophe? · · Score: 1

    Well you forget one thing. When united states creates over 1/4th of world CO2 output there is little left for others. And China isn't polluting anywhere nearly as much as United States in absolute terms and per capita, Only one that rivals you is Australia. And for multimillion year timeline, there was pretty large changes in what areas where desert and what areas are suitable for agriculture. Now thats big change.
    And for being fragile isn't so simple issue, when combined human effect is 8 times the global natural effects by all the forest of the world, in CO2 transfer. Also lots of small things depend on the issues being in balance. What people doesn't realize that 1% change in ability to radiate heat away makes balance 3C degrees higher. Also it takes time for transfer to occur, the size in this case acts mostly as a way to affect the speed of change, not where the end result is.
    Now if we change planets ability to radiate the heat away even 1% thats 3 degrees there. And humans have changed the CO2 concentration as absolute terms by 33% from the beginning of industrialization I'm not claiming that the balance would be 100C degrees higher than currently is since I'm not too familiar about the math of how the green house gasses alter the temperature.
    But there are TWO different things that have have and have damped the effect of greenhouse gasses, is dust we have made in the atmosphere and the sheer size of atmosphere and oceans to be heated.
    But about the catastrofic issues, well even SMALL increase in temperature makes lots of NATURAL sources of CO2 spew out their CO2 to atmosphere. Now what problems THAT generate, well it increases the effect even more. Also H2O is greenhouse gass, guess what happens its amount in atmosphere if we increase average planetary temperature even slightly. The melted ice with rising sea level is worst problem, secondary problem is that dry areas will become even drier, and areas of rain fall will get more rain fall, and areas with hurricanes will get worse hurricanes. Anyway It doesn't take much of a change in average yearly temperature in greenland for its ice to melt faster in summer than it could grow in winter, same for antarctic.
    Good news is that average temperature in michigan will be higher, the bad news is that east coast is going to hit big rains and hurricanes and Missisippi river is going to have some nice floods, due to increased rain fall, while mexico will have problems with draught so they will move north. Now what did you say about only small change I'm only talking about 2% change here. 2% increase in temperature so that there is higher vaporization of water, in both arid lands and in the sea. Our infrastructure and and rivers have not accustomed to deliver that much, so there will be another balance on increase water fall. Also one thing to take acount is that Large areas in the coast will be under water due to increase sealevel.

  15. Re:GLOBAL THERMONUCLEAR DUSTING on A Countdown To Global Catastrophe? · · Score: 0

    Thats insightfull!
    Unfortunately for us all, the thermonuclear dusting begins when its too late, as lots of the nasty effects have already come to account. Thermonuclear dusting begins when things have gone already so bad that people are desperate in getting to a better parts of world and the better parts happen to belong to a nuclear power...
    Anyway thermonuclear solution is only temporary. When the dust settles, the CO2 still remains. And if we hit target where carbon starts burning things get worse.

  16. Re:It's not just Censorware on New York's Oldest ISP Gets Domain-Jacked · · Score: 1

    Of course I'm Jolly. I'm very spiritual person ;)

    Main Entry: 1jolly
    Pronunciation: 'jä-lE
    Function: adjective
    Inflected Form(s): jollier; -est
    Etymology: Middle English joli, from Old French
    1 a (1) : full of high spirits : JOYOUS (2) : given to conviviality : JOVIAL b : expressing, suggesting, or inspiring gaiety : CHEERFUL

  17. Re:It's not just Censorware on New York's Oldest ISP Gets Domain-Jacked · · Score: 1

    Yes. Your name sounds like you might be female slashdotter.
    Of course if you are not female that doesn't really prevent the next applaying to you if you happen to be gay. Are you sure that you are not suffering some kind of stockholm syndrome?
    Yes. You should love him just as much as you love Microsoft.

  18. Re:DUPE *D*U*P*E on House Paint Foils Wardrivers · · Score: 1
    Parent post is a DUPE from LESS than TWO minutes ago.
    Honestly, do the "Posters" not even read concurrent posts?
    I know, it's probably always been like this around here...but still.

    Thats two minutes and he used more than a few words. [Compared to few random samples in his previous posts.] So it probably took him more than two minutes to write and think how it worked. So in overall they had some collision. With multithreaded software we typicly use some sort of locking mechanism to prevent conflicts of two separate threads accessing one thing. Shouldn't slashcode include a nice little lock to prevent dupe:s ;)

  19. No I have a better Idea. on House Paint Foils Wardrivers · · Score: 1

    Firstly install a wifi node called linksys. Let them get to the "internet" through it, quite freely.
    Next step is to put a linux machine between that and internet in a way that it doesn't look to outside word as anything, it forwards packets to internet gateway as it would of been from the wifi directly and same thing counter clockwise. With few exceptions. It creates packets that look that they come from internet site X running an assault to wardriver. Pick IP address that is assigned to goverment for such operation. [Without DNS name for the IP address that the wardriver thinks its assault target.] Here's the operation of the script If wardriver uses windows, own his machine. Next thing to do is uppload his machines, with screen shots of word and all the MS office applications. Of course those applications in middle of editing a "Lemon party" image or something else. Replace all the operating system basic applications with a application that just shows an image of said application, in the menu. Make his start up sound "I'm looking for Gay porn" and start up image and back ground a Lemon party. Best possibility is replace Explorer.exe or what ever the os GUI startup is called these days with your own funny program, that does interesting things in his machine. Like putting stuff out of his speakers that he doesn't wan't doesn't work anything like its supposed to, while giving him the image that its still the standard windows prompt. Also replace command.com with something similar, so that if he goes to text mode he will have strange errors, like it tells that component Y inside his computer is broken and needs to be replaced... Of course this assault in case he logs it, came from goverment IP address X. And definitely there is NO machine in between the Wifiaccesspoint and your ADSL modem in his eyes. You could make some timing thing in the assault like, its results will get activated next time he boots his machine or something similar, so that he wouldn't think its from you.
    Next thing is replicate the setup 5 times in your neightbourhood in other corners. And "service provider" should block him if he runs port scan or something similar, and warn him about illegal actions he's doing and send him a message that goverment has been notified of his actions.
    Oh yes. Wardriving is fun. Do it around here ;)

  20. BLAAH on Breakthrough In JPEG Compression · · Score: 0

    Stuffit my ass!

  21. Hard gaming habits. I decide to skip the responce. on Too Much Gaming, Anyone? · · Score: 1

    Discussion:

    info

    Jessica

    hobby

    date

    sex

    arrgh.

  22. There is one litttle trick in the question... on IBM Opens Their Patent Portfolio to Open Source · · Score: 3, Interesting

    If open source software X uses pledged patent IBM patent Y. And if company Z uses the X, and then company Z becomes something like SCO is today against OSS then IBM can sue them over patent Y since their lisence was revoked because of their lawsuit agais OSS entities. Yes. Thats the trick, they are making this partially for against future SCO:s.
    IANAL, but this looks obvious.

  23. Re:Heat is the problem on Where's My 10 Ghz PC? · · Score: 1
    So, you think that using multiple iterations of an inherently power-hungry technology will somehow solve the power problem? While, certainly, we could back off clock speeds with multi-processing and reduce heat considerably, but, people always want the cutting edge so the demand to "crank it up" would still be a profitable venture, thus pressuring the price of the lower-end stuff.

    Yes an no. There are plenty of reasons why. Firstly the power comsumption is HIGHLY dependent on voltage, dynamic comsumption its V and for leakage I cannot remember. And somewhat on frequency, but maximum attainable frequency is function of voltage, and some design characteristics of transistors, that have been sacrificed for higher frequency traditionally. And besides that you use more transistors in complex large core than two simpler cores, that have higher peak performance combined than the single core. Also they could desing LOW power transistors, but those cannot get high frequencies. By now you probably know the point. ALL the things that processor designers could do for low power, could reduce powercomsumption FAR more than it would reduce performance. If their target would be for instance having half the powercomsumption of other core, they would probably get way over 2/3rds of performance. Now Dual core is about putting 2 cores that each are almost as fast as single core processor to a single die. The goal of maximizing single thread performance maybe over, simply because it costs too much in power comsumption to do so.

  24. BEWARE on Online Groups Behind Bulk of Bootleg Films (& Games) · · Score: 1

    The back alleys of internet. PRIVATE IRC network. ITS DANGEROUS THERE!

  25. Re:Drang nach Osten! on Indoor Tropical Island · · Score: 1

    Which by now is mostly area that was germany before 1st worldwar.