Firstly, remember that Ethernet is not TCP/IP. TCP/IP is not Ethernet.
This stuff is not compatible with a typical home LAN. You could write a Linux Magic protocol stack, and use a standard Ethernet card. But you'd have to have a different card for your Lan (Perfectly feasable, by the way).
Ethernet is one of the few networking hardware systems that is cheap, comodity, high bandwidth and can deliver power. I can't think of another that meats those criteria.
Magic conforms to the 802.3af spec for providing power over Ethernet.
Utilitiding power-over-ethernet means that you no longer have to worry about dub batteries. That's a huge saving, and the reason that phantom power (essentially a power-over-mic-cable technology) exists in all mixing desks.
With wireless, you have to worry about power too. For a large stage show, you assign a tech to deal with that, and kick his ass if you run out of juice.
For people who arn't the Rolling Stones, U2 etc, power and signal in one cable is a good thing.
Additionally, cable gives a dependable signal. Note that this is not TCP/IP over ethernet, but a completly different protocol. What happens when you lose bandwith in your wireless connect? You'd get a click in the sound. That's speaker-wreckingly-ears-bleedingly unacceptable. 802.11 doesn't have badnwidth guarentes, whiles cable does (de facto, if not de jure - I don't know the ethernet spec well enough).
Unless you use a key only once, (possible, but definitly an odd way to do it), then for their $10M and a year, they get _all_ of your encrypted communications, and the ability to pretend to be you, online.
They say disceting a joke is like disecting a frog: No one really enjoys it, and at the end you have a dead frog.
With all of these sums, don't forget that there is someone in the control room of the studio, recording the damn thing. There there's the mixing/mastering engineer, who takes what the band records, and melts the multitrack down to stereo, and masters to CD.
People time is expensive - don't underestimate the costs of that part.
(Of course, if you find someone who'll mix for free, it can be almost as good, for vey little money. See my journal if your interested.)
There's a fair few comments of the type "Men and women are different, and that's why". To which I say, yep. There are differences.
How big are those differences? There is nothing quantitative being cited at all. From distant menory, I think that the differences are of the order of 3-5%. I wish I could cite something, but I can;t find anything (not my field:).
A difference of theat order of magnitude is a reasaonable match to the sex difference between people studying mathematics, physics, and chemistry.
So the real question is why is the the difference in student numbers greater than the statistically observed difference?
And if someone can point me to some hard numbers on this one, I'd be very interested.
They have an API (Application Programming Interface).
However, what your asking for is an ABI (Application Binary interface). That requires explict consideration of the compiled code, as wel as the source. The Developers don't want to do that, in addition to all that they currently do, because the only gain is for binary only modules.
It is possible, but take effort. No one either a) wants to do it, or b) is getting paid to do it.
Linus wouldn't include any such work anyway, so you'd have to host your own kernel.
Not really. He was a prolific writer, whose writings have survivied. Whether by coincidence, or not, it's because where have a record of what he did that he gets credit, rightly or wrongly.
I belive that there is a parrallel that could be drawn here, about people wanting a public record of what they did.
You've got your definition of entroy wrong. Your assuming it has a meaningful definition.
In order to examine the situation that your talking about, you have to go right back to the physics of the situation. Entropy is an integreating factor, something that is required to make the mathematics balance. It is not more than that. It turns out, however, that the concept of disorder fits with entroy in many cases (but not nessescerily all).
Once you follow the mathematics through (going from mental maths here), i think you'll find that in order for that to be true, assuming that the basic laws of mathematics don't change, you'll end up having to reverse a few other signs in thermodynamics, so that the net effect will be to reverse the 0 and infinity point of energy.
Net result: Things behave exactly as they are. If you apply a negative sign to every energy, you get 'increasing' entropy. Given that energies are arbitary anyway, you can do that, with no change in observerations. So, you end up with a world identical to our own.
What does this mean? The situation you want to generate is not possible.
A video codec, such as DivX, typically utilises some form of transformation, be it FFT, IDCT or some form of wavelet transform, then quantisation. Whilst you could split that into separate sections, it makes more sense to operate at a higher level - i.e. to split your video stream into chunks and then send each chunk off to a node, to compress in the usual fashion.
The advantages of this approach is that the codec only need be written once, and given that that's a hard part, this is a good thing. It also means that the cluster interface is codec neutral, thus no particular work need be done on the part of the codec developers.
Well, damn as nearly. Linux is only in catchup when the manufacturor will not release spec on how to use thier hardware.
When it comes to NUMA machines, Linux is up there. It may not excel at everything (yet - I'm sure that it will get there if it's not already). I'm mostly talking about the 2.5 kernel series.
New scheduler for improved scalability (Ingo Molnar) Support for Next Generation POSIX Threading (NGPT team) Syscall interface for CPU task affinity (Robert Love) Hotplug CPU support (Rusty Russell) NUMA topology support (Matt Dobson) Per-cpu hot & cold page lists (Andrew Morton, Martin Bligh) NUMA aware scheduler extensions (Erich Focht, Michael Hohnbaum)
The biggest performance changes in 2.5 seem to be in the many thread and many CPU region, including NUMA.
I'd trust it. (Yes, I do do scientific supercomputing).
with a wavelength dependant no linearity in the medium would do exactly that.
An FP inferometer consits of a pait of parallel mirrors, one half silver, the other full. The beam of light enters at an angle, and then the position of the output from the half silvered mirror is wavelength dependant. They are used in situations similar to a diffraction grating, but they can be made much more accuratly. (There are other criteria too, which I forget.)
This seperates very close fequencies. Imagine - instead of giving a machine an IP, give it a frequency.
Haveing a laser that is tunable in frequency is not too difficult - the simplest solution would be to use an Optical parametric oscilator. These split the laser into two different colours, and you just block the colour you don't want.
How much time will you spend on reading a political pamphlet, or listening to a political speech?
Compare this to the amount of time you would spend on a game, with some political content.
If these numbers are the same, then neither is really more effective than the other, on you.
But, I'm willing to wager that for a large number of people, they'd spend more time on the game than the pamphlet. The time spent translates into mindshare. In other words, if people spend a lot of time on an item, they are more likely to tel others about it.
Thus, for many people, they represent a good way to get a message across.
They are _not_ about pursueading many people to vore with them, they are about one issue (every vote must represent a comprimise between many issues). The establishment, to use your term, has always recognised that entertaining policical commenty is a powerful way to show flaws, inconsistancies and disagreement with established figureheads. See Punch, Private Eye, Spitting Image, Brass Eye and so on.
Your argument, based on the fact that there are more productive ways to topple the current political leaders, misses the purpose of this form of political speech. You would replace them wholesale. Satire will cause them to modifiy thier position and statements. These are distinct aims.
One of the advantages of Literate Programming is (at least from my experinece) is that one can start with a general idea of what is needing done, and then fill down to the end, as it suits the programmer. For example, when writing a sorting routine, at some point I know I'll need code to swap the contents of two pointers. I can (in CWEB) just put a place holder in, and write it later, or, if I've got the code in my head, just write it down directly.
This method models the way that (for me at least) code is thought about. That's the key idea in LitProg - to put the source code / documentation down in a manner that models the thought processes of the programmer.
I don't have a full, firm, outline in mind right at the start. That's not to say I don't think about it - but it's not final. Using an outliner at the start would not work well with me. CWEB forces me to document the thought behind each step of the algorithm, and presents it in logical order, even though it was not written in that order.
Maybe if I had a cast in stone plan for the code before I start, I'd write better code. But I work well enough with CWEB &c that I don't see the addition of an outliner assisting.
Frankly, looking at the web page, it looks just like an outlining code editor - nothing that dramatic, and I'd rather stick to vi + CWEB.
The tracks are for transport - not for positioning.
It's not clear which method they're using, but either the whole wafer is imobile during the lithography step, or that there are precise adjustments made after they're moved by the liner motors.
I think that the reason that it's misunderstood is because there's that half degree of true it.
There _is_ a resonance, and thus at frequencies near that, water absorbs stronger than other materials. If memory serves me correctly, the resonance is at around 1.4 GHz (although my mental arithmatic might be out) for the H-O-H bend. At the 2.4 GHz then, it's not having much of an effect, compared to a resonant system. But there is an increase in it's absorbtion cross section, due to that.
Were it not for the resonance, then it wouldn't be principly water that did the absorbing, and the penetration depth in a microwave would be much greater.
IIRC the 2.4 GHz was picked because the ways to generate microwaves are pretty efficent at that frequency, and the energy dispertion inside water is 3Db per inch or so.
I'm pretty certain that 3DnowPro! (in the Athlons) must be. This is an empiricism, based on the speed of execution of my code, which is practically fully double precision, (couple of integers for loop counters).
Of course, I could be wrong, and there might be some other factor that's making the Athlon appear to be that fast.
Never realised - I just tell the compiler to use the funky flop stuff, and away it goes. Never realised it was technically different, given it's pretty much the same in effect.
However, for a dual boot, you might as well buy the system with OS X pre-installed, and then install Linux yourself - Having linux pre-installed is not a major benefit, from that point of view (if you want to dual boot, you're going to be capable of doing an install, in > 99% of cases).
BTW: By OS Vendor, I ment Debian, Slackware, et al (I should have said distribution, rather than vendor. oh, Well).
Again, I just can't see a major benefit here, other than just more people selling linux pre-installed.
I must admit that I'm a little blank on why anyone would particularly want a Mac runing Linux, to the point of buying it with Linux preinstalled.
I mean, yes they're nicely built, and they're decent price performance, but why not use a PC compatable? It would give you more choice in terms of OS vendor, and much of the commercial Linux is PC only. PowerPC is a nice chip, but an Athlon will be as quick, for similar money.
I suppose if you've got lots of PowerPC installed already, then you'd gain by matching architectures, but that's (IMO) unlikely.
Even in terms of numerically power, the Athlons with SSE2 are faster than the AltiVec (SSE2 does double precision, AltiVec doesn't), for similar money.
Don't get me wrong - someone selling Linux pre-installed is a Good Thing - I just can't see anything particularly gripping about Mac's pre-installed with Linux.
Your average mobile phone thief is not a technologially inclined guy. They are street toughs, no more.
The only reason that they steal the phones, is that they can sell them on. If the IMEI number isn't changed, then the networks will block the phone, giving a useless item, and no cash. So they take the phone to the local friendly techie, who, legitimitly, will change the IMEI number.
The law would allow the police to move against the people who facilitate the crime, in an effort to stop it being profitable, rather than directly at the criminals. If there's no profit in the activity, it should just stop.
D&D was, for it's time, an incredible piece of work. It managed to put across so much that's now taken for granted. For example, the fact that you play just one character was near revolutionary for the time - D&D was the first to get that across sucessfully. Were it not for D&D, RPG's would exist . (Okay something else would have taken it's place, but that's a given).
Since then, however, there's been a large number of different RGP's produced, some more or less like D&D (such as RM), some a bit different (Call of Cuthullu, Vampire:the Masqurade, etc), and some rather different (Sorcerer and De Profoundis.
Some of them really push the envelope of what RPG's are. Some are just kick ass fun. With all the nostalgia, remeber to try some of the newer stuff.
On RM Leisure Games based in london, will mail order, and have a stock of Rolemaster gear. They will deliver outside the UK (including Spain), but that costs extra. Hey, if it's the only place to get it...
Slashdot Mirror
Firstly, remember that Ethernet is not TCP/IP. TCP/IP is not Ethernet.
This stuff is not compatible with a typical home LAN. You could write a Linux Magic protocol stack, and use a standard Ethernet card. But you'd have to have a different card for your Lan (Perfectly feasable, by the way).
Ethernet is one of the few networking hardware systems that is cheap, comodity, high bandwidth and can deliver power. I can't think of another that meats those criteria.
Magic is a protocol at the same level as TCP/IP.
Utilitiding power-over-ethernet means that you no longer have to worry about dub batteries. That's a huge saving, and the reason that phantom power (essentially a power-over-mic-cable technology) exists in all mixing desks.
With wireless, you have to worry about power too. For a large stage show, you assign a tech to deal with that, and kick his ass if you run out of juice.
For people who arn't the Rolling Stones, U2 etc, power and signal in one cable is a good thing.
Additionally, cable gives a dependable signal. Note that this is not TCP/IP over ethernet, but a completly different protocol. What happens when you lose bandwith in your wireless connect? You'd get a click in the sound. That's speaker-wreckingly-ears-bleedingly unacceptable. 802.11 doesn't have badnwidth guarentes, whiles cable does (de facto, if not de jure - I don't know the ethernet spec well enough).
Unless you use a key only once, (possible, but definitly an odd way to do it), then for their $10M and a year, they get _all_ of your encrypted communications, and the ability to pretend to be you, online.
They say disceting a joke is like disecting a frog: No one really enjoys it, and at the end you have a dead frog.
Sorry for killing your frog.
With all of these sums, don't forget that there is someone in the control room of the studio, recording the damn thing. There there's the mixing/mastering engineer, who takes what the band records, and melts the multitrack down to stereo, and masters to CD.
People time is expensive - don't underestimate the costs of that part.
(Of course, if you find someone who'll mix for free, it can be almost as good, for vey little money. See my journal if your interested.)
There's a fair few comments of the type "Men and women are different, and that's why". To which I say, yep. There are differences.
:).
How big are those differences? There is nothing quantitative being cited at all. From distant menory, I think that the differences are of the order of 3-5%. I wish I could cite something, but I can;t find anything (not my field
A difference of theat order of magnitude is a reasaonable match to the sex difference between people studying mathematics, physics, and chemistry.
So the real question is why is the the difference in student numbers greater than the statistically observed difference?
And if someone can point me to some hard numbers on this one, I'd be very interested.
They have an API (Application Programming Interface).
However, what your asking for is an ABI (Application Binary interface). That requires explict consideration of the compiled code, as wel as the source. The Developers don't want to do that, in addition to all that they currently do, because the only gain is for binary only modules.
It is possible, but take effort. No one either a) wants to do it, or b) is getting paid to do it.
Linus wouldn't include any such work anyway, so you'd have to host your own kernel.
Essentially, picking Plato is arbitary
Not really. He was a prolific writer, whose writings have survivied. Whether by coincidence, or not, it's because where have a record of what he did that he gets credit, rightly or wrongly.
I belive that there is a parrallel that could be drawn here, about people wanting a public record of what they did.
You've got your definition of entroy wrong. Your assuming it has a meaningful definition.
In order to examine the situation that your talking about, you have to go right back to the physics of the situation. Entropy is an integreating factor, something that is required to make the mathematics balance. It is not more than that. It turns out, however, that the concept of disorder fits with entroy in many cases (but not nessescerily all).
Once you follow the mathematics through (going from mental maths here), i think you'll find that in order for that to be true, assuming that the basic laws of mathematics don't change, you'll end up having to reverse a few other signs in thermodynamics, so that the net effect will be to reverse the 0 and infinity point of energy.
Net result: Things behave exactly as they are. If you apply a negative sign to every energy, you get 'increasing' entropy. Given that energies are arbitary anyway, you can do that, with no change in observerations. So, you end up with a world identical to our own.
What does this mean? The situation you want to generate is not possible.
That's not the optimal method of proceding.
A video codec, such as DivX, typically utilises some form of transformation, be it FFT, IDCT or some form of wavelet transform, then quantisation. Whilst you could split that into separate sections, it makes more sense to operate at a higher level - i.e. to split your video stream into chunks and then send each chunk off to a node, to compress in the usual fashion.
The advantages of this approach is that the codec only need be written once, and given that that's a hard part, this is a good thing. It also means that the cluster interface is codec neutral, thus no particular work need be done on the part of the codec developers.
transcode has such a mode.
Well, damn as nearly. Linux is only in catchup when the manufacturor will not release spec on how to use thier hardware.
When it comes to NUMA machines, Linux is up there. It may not excel at everything (yet - I'm sure that it will get there if it's not already). I'm mostly talking about the 2.5 kernel series.
From the status list
New scheduler for improved scalability (Ingo Molnar)
Support for Next Generation POSIX Threading (NGPT team)
Syscall interface for CPU task affinity (Robert Love)
Hotplug CPU support (Rusty Russell)
NUMA topology support (Matt Dobson)
Per-cpu hot & cold page lists (Andrew Morton, Martin Bligh)
NUMA aware scheduler extensions (Erich Focht, Michael Hohnbaum)
The biggest performance changes in 2.5 seem to be in the many thread and many CPU region, including NUMA.
I'd trust it. (Yes, I do do scientific supercomputing).
with a wavelength dependant no linearity in the medium would do exactly that.
An FP inferometer consits of a pait of parallel mirrors, one half silver, the other full. The beam of light enters at an angle, and then the position of the output from the half silvered mirror is wavelength dependant. They are used in situations similar to a diffraction grating, but they can be made much more accuratly. (There are other criteria too, which I forget.)
This seperates very close fequencies. Imagine - instead of giving a machine an IP, give it a frequency.
Haveing a laser that is tunable in frequency is not too difficult - the simplest solution would be to use an Optical parametric oscilator. These split the laser into two different colours, and you just block the colour you don't want.
How much time will you spend on reading a political pamphlet, or listening to a political speech?
Compare this to the amount of time you would spend on a game, with some political content.
If these numbers are the same, then neither is really more effective than the other, on you.
But, I'm willing to wager that for a large number of people, they'd spend more time on the game than the pamphlet. The time spent translates into mindshare. In other words, if people spend a lot of time on an item, they are more likely to tel others about it.
Thus, for many people, they represent a good way to get a message across.
They are _not_ about pursueading many people to vore with them, they are about one issue (every vote must represent a comprimise between many issues). The establishment, to use your term, has always recognised that entertaining policical commenty is a powerful way to show flaws, inconsistancies and disagreement with established figureheads. See Punch, Private Eye, Spitting Image, Brass Eye and so on.
Your argument, based on the fact that there are more productive ways to topple the current political leaders, misses the purpose of this form of political speech. You would replace them wholesale. Satire will cause them to modifiy thier position and statements. These are distinct aims.
One of the advantages of Literate Programming is (at least from my experinece) is that one can start with a general idea of what is needing done, and then fill down to the end, as it suits the programmer. For example, when writing a sorting routine, at some point I know I'll need code to swap the contents of two pointers. I can (in CWEB) just put a place holder in, and write it later, or, if I've got the code in my head, just write it down directly.
This method models the way that (for me at least) code is thought about. That's the key idea in LitProg - to put the source code / documentation down in a manner that models the thought processes of the programmer.
I don't have a full, firm, outline in mind right at the start. That's not to say I don't think about it - but it's not final. Using an outliner at the start would not work well with me. CWEB forces me to document the thought behind each step of the algorithm, and presents it in logical order, even though it was not written in that order.
Maybe if I had a cast in stone plan for the code before I start, I'd write better code. But I work well enough with CWEB &c that I don't see the addition of an outliner assisting.
Frankly, looking at the web page, it looks just like an outlining code editor - nothing that dramatic, and I'd rather stick to vi + CWEB.
The tracks are for transport - not for positioning.
It's not clear which method they're using, but either the whole wafer is imobile during the lithography step, or that there are precise adjustments made after they're moved by the liner motors.
I don't know what a 'babershop' is
Babe-r-shop ?
I think that the reason that it's misunderstood is because there's that half degree of true it.
There _is_ a resonance, and thus at frequencies near that, water absorbs stronger than other materials. If memory serves me correctly, the resonance is at around 1.4 GHz (although my mental arithmatic might be out) for the H-O-H bend. At the 2.4 GHz then, it's not having much of an effect, compared to a resonant system. But there is an increase in it's absorbtion cross section, due to that.
Were it not for the resonance, then it wouldn't be principly water that did the absorbing, and the penetration depth in a microwave would be much greater.
IIRC the 2.4 GHz was picked because the ways to generate microwaves are pretty efficent at that frequency, and the energy dispertion inside water is 3Db per inch or so.
I'm pretty certain that 3DnowPro! (in the Athlons) must be. This is an empiricism, based on the speed of execution of my code, which is practically fully double precision, (couple of integers for loop counters).
Of course, I could be wrong, and there might be some other factor that's making the Athlon appear to be that fast.
Must admit that I never thought about laptops - I'm a number cruncher, so mobile computing doesn't happen.
That's a good point.
Uh. Ooops.
Never realised - I just tell the compiler to use the funky flop stuff, and away it goes. Never realised it was technically different, given it's pretty much the same in effect.
That's a good argument for a dual boot system.
However, for a dual boot, you might as well buy the system with OS X pre-installed, and then install Linux yourself - Having linux pre-installed is not a major benefit, from that point of view (if you want to dual boot, you're going to be capable of doing an install, in > 99% of cases).
BTW: By OS Vendor, I ment Debian, Slackware, et al (I should have said distribution, rather than vendor. oh, Well).
Again, I just can't see a major benefit here, other than just more people selling linux pre-installed.
I must admit that I'm a little blank on why anyone would particularly want a Mac runing Linux, to the point of buying it with Linux preinstalled.
I mean, yes they're nicely built, and they're decent price performance, but why not use a PC compatable? It would give you more choice in terms of OS vendor, and much of the commercial Linux is PC only. PowerPC is a nice chip, but an Athlon will be as quick, for similar money.
I suppose if you've got lots of PowerPC installed already, then you'd gain by matching architectures, but that's (IMO) unlikely.
Even in terms of numerically power, the Athlons with SSE2 are faster than the AltiVec (SSE2 does double precision, AltiVec doesn't), for similar money.
Don't get me wrong - someone selling Linux pre-installed is a Good Thing - I just can't see anything particularly gripping about Mac's pre-installed with Linux.
Your average mobile phone thief is not a technologially inclined guy. They are street toughs, no more.
The only reason that they steal the phones, is that they can sell them on. If the IMEI number isn't changed, then the networks will block the phone, giving a useless item, and no cash. So they take the phone to the local friendly techie, who, legitimitly, will change the IMEI number.
The law would allow the police to move against the people who facilitate the crime, in an effort to stop it being profitable, rather than directly at the criminals. If there's no profit in the activity, it should just stop.
Whether it will work, remains to be seen.
D&D was, for it's time, an incredible piece of work. It managed to put across so much that's now taken for granted. For example, the fact that you play just one character was near revolutionary for the time - D&D was the first to get that across sucessfully. Were it not for D&D, RPG's would exist . (Okay something else would have taken it's place, but that's a given).
Since then, however, there's been a large number of different RGP's produced, some more or less like D&D (such as RM), some a bit different (Call of Cuthullu, Vampire:the Masqurade, etc), and some rather different (Sorcerer and
De Profoundis.
Some of them really push the envelope of what RPG's are. Some are just kick ass fun. With all the nostalgia, remeber to try some of the newer stuff.
On RM Leisure Games based in london, will mail order, and have a stock of
Rolemaster gear. They will deliver outside the UK (including Spain), but that costs extra. Hey, if it's the only place to get it...
Right now, 90% of the people working here are on vacation.
And your complaining because?
http://wired.st-and.ac.uk/~spurdie/
In the UK.