For FTP: Its good to know how to securely configure an anonymous FTP session. You don't want real users using it though. scp for that. NFS is absolutely essential, especially if you are working with beowulf or mainframe stuff. Anaconda kickstart with pxeboot, wake-on lan, and NFS is an absolute GODSEND. I can completely upgrade (to a new distro) an entire cluster remotely, by issuing one command (redhat does not come with this of course, I had to write that myself). Sendmail... I thought the concensus as of late was to switch to postfix... perhaps i'm off, but I run postfix on all of my machines though sendmail is very important to know in and of itself.
how about p2p proxy? you run a sort of p2p client and your requests are forwarded to people that run a p2p "server", people who are willing to forward some bandwidth for their use. It is automatically forwarded to the proxy with the least load. Routines can be written that prevent misuse of a person's proxy e.g. scanners and what not. They couldn't block us all... either that, or they just shut down their pipe and the Iranians have no access to anything outside the country. Just my $0.02.
(ahem, those are all CHEMSISTRY codes; declare you field with PRIDE!)
Hehe, unfortunately, I am no chemist (though my job has demanded that I learn more than my share about the underlying computations that take place within many of these apps). I was a C.S. major, however, I became bored with much of the theory, and topped with my full-time job as a beowulf admin/developer, I quickly became burned-out from all things computer related. As I wanted to keep my job but could really care less about which degree I got, I switched to something totally different (philosophy) as I believed C.S. was "getting in the way of my actual learning".
I'm not really sure what type of tests specfp does on the fpu as we have never used it as a "guage" for our chips. We have used custom in-house benches that use routines from our more popular scientific codes. These codes show a clear advantage with AMD chips. Is it possible that specfp is exploiting features of Itanium's fpu that our scientific codes are not?
I think this is rather untrue (with the exception of vector processors, which require a whole different means of coding to take advantage of). The new Athlon64's have completely stomped Intel boxes in real-world computations (not linpack, which is quickly becoming irrelevant in the eyes of many beowulfers). Vasp, Wien2k, blas, lapack, dlpoly, lsdyna and a lot of other scientific codes have run exceptionally well on Athlon64's (not to mention opterons). I've run the same simulations on Xeons and Itaniums and the AMD's win hands down in terms of raw floating point throughput. In fact, some of my tests have shown single A64's to out-perform dual Xeons rated similarly (2.8 Ghz Xeons vs. 2800+ A64's). We don't have any dual itanium rigs to compare against, so I'll leave that one open.
Now, if you've written your code to exploit SSE3, then we might have something to talk about. But seeing as most scientific codes do not use SSE3 nor any other multimedia or extended instruction sets/registers, then that point is irrelevant. As it stands now, I will opt for Opteron on all future clusters.
I just did the same thing for a Real Video stream that is put up for democracy now everyday at 12. At 1:00, cron runs a script I wrote that uses mencoder.
Basically, the script just sets the file name based on the current date. The mencoder command is this:
$ mencoder -ovc lavc -oac mp3lame (url) -o
Which records and reencodes the stream. This has worked out extremely well. Hope this helps.
With all due respect, go fuck yourself. I in no way portrayed myself as a proponent for communism. You fucking people can't tell a non-biased statement from propaganda! Its amazing what the media has done to you. You have my pity.
Communism was designed, of course, for Germany and not Russia by Marx and Engles; widespread knowledge of industrial slavery was assumed as a given, but that was not extant in Russia. Further, the proletariat revolution was even designated intellectually as consisted of three phases: revolutionary government, socialist government, and then exclusively communist government......
I wrote a 30 page thesis for an Origin of the State class that details everything you said. What is it that you are trying to counter that is "tacitly incorrect"?
It wasn't Lenin's philosophy on communism prior to his regime that failed the Soviet system, but his "modifications" after he took over that led to the demise. Much of these "modifications" were, in fact, a result of Western nations putting their noses in places they shouldn't have and encouraging resistance to Lenin's government (since Kerensky, although a socialist, was more friendly towards the west). This forced Lenin to take a very hard line on the populace and gave birth to a quasi-dictatorship that Stalin would later bring full-circle.
I think my original post, though general, was correct on all accounts and does, in no way, run contrary to what the both of us know to be true. Let me know if you want a link to my paper.
In no way did I present myself as an advocate for a Communist system. I was simply setting the parent's facts straight.
The original system of Lenin was a dictatorship, yes, but I dare you to prove a way of even starting to apply communist principles completely without that. And there are no benevolent dictators.
I can prove to you that it is progressively happening right now, except you would have to look at the current U.S. administration and certain world governments as non-dictatorships. The amount of government subsidies going to corporations (remember the airline debacle after 9/11? Have you as a citizen, seen a single shred of stock from any airline, since the government illegaly sent your tax dollars to save them?) and the level of integration between the military and its industrial complex are indicative of a phased-in progressive approach to enable communism. The elimination of cash (as is becoming apparent) and the establishment of large credit lines have created an environment where if you work, you can get what ever you want, regardless of what you do or your skill level. It is becoming ever more evident that your ability to procure things is no longer dependent on the amount of real money you have.
The funny thing is, that all of this, though some may debate it, appears to be the will of the people. Communists believed in the state being the corporation, hence, the elimination of the corporation as it is a sector of the state. They also believed in a cashless society, where personal capital and general capital were not the basis of competition but that competition was such that it was the basis in and of itself. It seems to me, that we are doing a much better job of putting these things in to practice than Lenin.
And I don't know about you, but my copy of the communist manifesto doesn't say much giving people a choice; it just makes an assumption that communism is a historical inevitability, and that you'd better learn to live with it.
The manifesto is like a pamphlet to describe the general idea of Communism. Throughout much of Marx and Engel's more detailed writings, they not only allude to, but directly state that the Communist economic system must be hand-in-hand with some sort of popular government, a democracy, a republic, etc. In fact, Marx and Engels frequently state throughout their work that the adoption of a Communist economic system must be brought about by the will of the people.
Just like every other communist country is a dictatorship.
The fact that they are Communist is not the reason that they were dictatorships. They were dictatorships because they were modeled after the original Soviet system. It was originally envisioned by Lenin (who grossly modified Marx and Engels work) and later modified by Stalin. When Stalin came to power, Soviet hegemony throughout Asia and Eastern Europe spread, and with it, the Soviet system of government, a dictatorship.
Don't be fooled by people. The Communist Manifesto is not the no-all, end-all of communism, just a simple leaflet compared to what is really out there.
Check out this link for Marx and Engel's real work.
Tires don't last a year!?!? You must be driving like a bat out of hell! I've had the same tires on my car for at least 2 years now and they still have plenty of tread left on them with plenty of city and highway miles.
Just a side note, that the earth already experiences a reduction in rotational speed as a side effect of having a satelite in orbit around it (the Moon). Think of it as a decelerating car... you hit your brakes, but someone nudges you from behind. You sill slow down, but it took just a bit longer for it to happen. This is the same thing, only the parameters are orders of magnitude smaller.
There would have to be some sort of counter-force to undo whatever this earthquake did to the planet's rotation, an 'anti-earthquake' of sorts. I don't see that happening in the immediate future.
This quake and all quakes are caused by shifts in the tectonic plates. The plates that shifted to cause this quake had such enormous potential energy, that when they finally buckled, the kinetic energy unleashed, something on the order of probably a 70-80,000 megaton yeild hydrogen bomb, created a disturbance that slightly 'pushed' one side of the planet in a vector, increasing our rotational velocity by some small degree. I wonder if this applied any force in a vector that ran perpendicular or in any other direction relative to the earth's rotation, possibly causing a gradual shift in our axis... Its obvious to me that it would be quite improbable that the force vector causing the increase in rotational velocity was directly inline with the earth's rotation, hence only causing an increase in our rotational velocity.
In sum, If it caused a 3 microsecond drop in our day time, who's to say that same force did not create some order of disturbance with our axis or quite possibly, our orbit? (Don't fret, the numbers are probably quite negligable). And no, it is unlikely that any gravitational forces will correct this change in rotational velocity.
no one says that you shouldn't have the right to research what the doc is putting in your body. These advertisements give hardly any information that you would find useful.
Drug manufacturers should _not_ be advertising their drugs (unless they are over-the-counter) to the general population. Doctors are there to diagnose your problem and prescribe the correct medication. You have no business going to a doctor and telling him/her what drug you want to take to cure what ailes you, because unless you are a doctor, you probably don't really have a clue. The only people receiving advertising from the drug companies should be doctors and only doctors.
I always thought a Von Neuman machine was just a computer where the data and the instructions to be executed were stored in some temporary storage medium, like RAM...
To both of you: only I and the makers of the Matrix are allowed to misspell 'cipher'... As it was a name of a rather blah character in the movie and has been the domain for my email address for quite some time, I think we have the monopoly on this one, pal(s). Please immediately cease your infringement on our intellectual properties so as to prevent this from becoming a _legal_ matter.
There is a lot of flaming going on here about the ethics of downloading these movies, etc, and not a lot of discussion about the implications of stated events. You might think that I'm one of those tin foil hat guys, but lets be serious.
The problem as the RIAA/MPAA sees it, with regards to file sharing, is not that you are depriving them of profits or that you have broken copyright law. They take issue with the fact that long-term use of file sharing to distribute their media will curtail their plans for purely subscription based services.
The RIAA, MPAA, cable companies, and other media companies are looking towards subscription based services where you are locked into a particular service. Right now, we have to pay a subscription fee to watch cable television. Its a steady, consistent form of income for the companies providing the service. The RIAA and MPAA would LOVE to migrate to subscription based services. Netflix and others are the beginning of this. Eventually, instead of getting DVDs in the mail, you will simply be able to punch it up on your TV for a monthly fee without the ability to copy it. Without an actual physical medium to distribute the content, copying becomes more difficult.
The real problem lies with the fact that a company (MPAA) can make a threat, and half way around the world a police force raids some place and arrests 30 people for an offence that is actually a civil matter, not a criminal one. The fact that the police and government forces are butting into civil matters is extremely frightening. It is one more nail in the coffin for civil rights and for freedom.
Call me crazy, but to me, this is the same thing as being arrested for slander. Sure, the person that I have slandered has every right to take me to court and work to receive compensation for my lies. But what right does the government have to come in and arrest you for it? There is a big difference between a civil offence and a criminal offence. It is a line that must be well defined in order to preserve individual liberties.
That was probably the case years ago, but there have been significant advances in creating these reactions in a controlled environment. The problem now is not controllability, it has been sustainability. Super-heated plasma would be used to generate the heat necessary to start the reaction, but inconsistencies would arrise in the flow of this plasma. Eddies would form and "cold spots" would form making the reaction stop. Apparently, they have used simulations to determine the best way to control these eddies and the plasma flow, thus making the reaction sustainable. I'm sure we'll see a working plant within 10-15 years or whenever a country decides they actually want to have one on their soil.
Not only that, according to this article that is posted somewhere above, it only lost 5 thermal tiles and landed within 5 feet of the runway center line with a 35 mph cross wind... on remote control!!! I'd like to see our shuttle pull that off.
Get it in writing. If they wont give you a guarantee of employment after your contract period is up (provided you performed to their expectations) step away from the table. It seems that a lot of tech jobs these days are becoming contract positions which is really a double edged sword.
Some people make out like bandits and basically run a small business that works with many different firms. However, this often does not work out as well as one hopes. You can go through dry seasons etc. where you get inadequate work so you'd better brush up on some basic accounting before you jump in. You've got no retirement benefits, no health insurance, a potentially unstable salary, rolling your own taxes every year, and a plethora of other things I've probably not though of.
Truth be told, you could stand to make a ton of money if you pull it off but just remember what you're getting yourself into. If you want to work the contract job with the hope of nabbing a full-time position, get it in writing before you become a pawn.
Get back to work... nothing to see here
on
Intro to Encryption
·
· Score: 0, Flamebait
Let's say you are 8 years old and you know next to nothing about computing in general and the word 'encryption' piqued your interest. It is at this point that I would guide you to this so-called "primer". WTF do the editors do all day? You submit a well-written story with lots of information attached and you get rejected. You submit an 8 year old's intro to cryptography (i.e. "How to play Celebrity Cypher in your newspaper") and it makes front page. I hope those guys aren't paid to edit.
Slashdot Mirror
For FTP: Its good to know how to securely configure an anonymous FTP session. You don't want real users using it though. scp for that. NFS is absolutely essential, especially if you are working with beowulf or mainframe stuff. Anaconda kickstart with pxeboot, wake-on lan, and NFS is an absolute GODSEND. I can completely upgrade (to a new distro) an entire cluster remotely, by issuing one command (redhat does not come with this of course, I had to write that myself). Sendmail... I thought the concensus as of late was to switch to postfix... perhaps i'm off, but I run postfix on all of my machines though sendmail is very important to know in and of itself.
...you might be a geek.
Based on his sentence structure and inability to express even the most basic thought, I would guess not. Sorry, I had to say it.
how about p2p proxy? you run a sort of p2p client and your requests are forwarded to people that run a p2p "server", people who are willing to forward some bandwidth for their use. It is automatically forwarded to the proxy with the least load. Routines can be written that prevent misuse of a person's proxy e.g. scanners and what not. They couldn't block us all... either that, or they just shut down their pipe and the Iranians have no access to anything outside the country. Just my $0.02.
(ahem, those are all CHEMSISTRY codes; declare you field with PRIDE!)
Hehe, unfortunately, I am no chemist (though my job has demanded that I learn more than my share about the underlying computations that take place within many of these apps). I was a C.S. major, however, I became bored with much of the theory, and topped with my full-time job as a beowulf admin/developer, I quickly became burned-out from all things computer related. As I wanted to keep my job but could really care less about which degree I got, I switched to something totally different (philosophy) as I believed C.S. was "getting in the way of my actual learning".
I'm not really sure what type of tests specfp does on the fpu as we have never used it as a "guage" for our chips. We have used custom in-house benches that use routines from our more popular scientific codes. These codes show a clear advantage with AMD chips. Is it possible that specfp is exploiting features of Itanium's fpu that our scientific codes are not?
I think this is rather untrue (with the exception of vector processors, which require a whole different means of coding to take advantage of). The new Athlon64's have completely stomped Intel boxes in real-world computations (not linpack, which is quickly becoming irrelevant in the eyes of many beowulfers). Vasp, Wien2k, blas, lapack, dlpoly, lsdyna and a lot of other scientific codes have run exceptionally well on Athlon64's (not to mention opterons). I've run the same simulations on Xeons and Itaniums and the AMD's win hands down in terms of raw floating point throughput. In fact, some of my tests have shown single A64's to out-perform dual Xeons rated similarly (2.8 Ghz Xeons vs. 2800+ A64's). We don't have any dual itanium rigs to compare against, so I'll leave that one open.
Now, if you've written your code to exploit SSE3, then we might have something to talk about. But seeing as most scientific codes do not use SSE3 nor any other multimedia or extended instruction sets/registers, then that point is irrelevant. As it stands now, I will opt for Opteron on all future clusters.
I just did the same thing for a Real Video stream that is put up for democracy now everyday at 12. At 1:00, cron runs a script I wrote that uses mencoder.
Basically, the script just sets the file name based on the current date. The mencoder command is this:
$ mencoder -ovc lavc -oac mp3lame (url) -o
Which records and reencodes the stream. This has worked out extremely well. Hope this helps.
With all due respect, go fuck yourself. I in no way portrayed myself as a proponent for communism. You fucking people can't tell a non-biased statement from propaganda! Its amazing what the media has done to you. You have my pity.
You're preaching to the chior on that one ;)
Communism was designed, of course, for Germany and not Russia by Marx and Engles; widespread knowledge of industrial slavery was assumed as a given, but that was not extant in Russia. Further, the proletariat revolution was even designated intellectually as consisted of three phases: revolutionary government, socialist government, and then exclusively communist government......
I wrote a 30 page thesis for an Origin of the State class that details everything you said. What is it that you are trying to counter that is "tacitly incorrect"?
It wasn't Lenin's philosophy on communism prior to his regime that failed the Soviet system, but his "modifications" after he took over that led to the demise. Much of these "modifications" were, in fact, a result of Western nations putting their noses in places they shouldn't have and encouraging resistance to Lenin's government (since Kerensky, although a socialist, was more friendly towards the west). This forced Lenin to take a very hard line on the populace and gave birth to a quasi-dictatorship that Stalin would later bring full-circle.
I think my original post, though general, was correct on all accounts and does, in no way, run contrary to what the both of us know to be true. Let me know if you want a link to my paper.
In no way did I present myself as an advocate for a Communist system. I was simply setting the parent's facts straight.
The original system of Lenin was a dictatorship, yes, but I dare you to prove a way of even starting to apply communist principles completely without that. And there are no benevolent dictators.
I can prove to you that it is progressively happening right now, except you would have to look at the current U.S. administration and certain world governments as non-dictatorships. The amount of government subsidies going to corporations (remember the airline debacle after 9/11? Have you as a citizen, seen a single shred of stock from any airline, since the government illegaly sent your tax dollars to save them?) and the level of integration between the military and its industrial complex are indicative of a phased-in progressive approach to enable communism. The elimination of cash (as is becoming apparent) and the establishment of large credit lines have created an environment where if you work, you can get what ever you want, regardless of what you do or your skill level. It is becoming ever more evident that your ability to procure things is no longer dependent on the amount of real money you have.
The funny thing is, that all of this, though some may debate it, appears to be the will of the people. Communists believed in the state being the corporation, hence, the elimination of the corporation as it is a sector of the state. They also believed in a cashless society, where personal capital and general capital were not the basis of competition but that competition was such that it was the basis in and of itself. It seems to me, that we are doing a much better job of putting these things in to practice than Lenin.
And I don't know about you, but my copy of the communist manifesto doesn't say much giving people a choice; it just makes an assumption that communism is a historical inevitability, and that you'd better learn to live with it.
The manifesto is like a pamphlet to describe the general idea of Communism. Throughout much of Marx and Engel's more detailed writings, they not only allude to, but directly state that the Communist economic system must be hand-in-hand with some sort of popular government, a democracy, a republic, etc. In fact, Marx and Engels frequently state throughout their work that the adoption of a Communist economic system must be brought about by the will of the people.
Just like every other communist country is a dictatorship.
The fact that they are Communist is not the reason that they were dictatorships. They were dictatorships because they were modeled after the original Soviet system. It was originally envisioned by Lenin (who grossly modified Marx and Engels work) and later modified by Stalin. When Stalin came to power, Soviet hegemony throughout Asia and Eastern Europe spread, and with it, the Soviet system of government, a dictatorship.
Don't be fooled by people. The Communist Manifesto is not the no-all, end-all of communism, just a simple leaflet compared to what is really out there.
Check out this link for Marx and Engel's real work.
Marx and Engel's Selected Works
I especially recommend that you read "The Principles of Communism".
Tires don't last a year!?!? You must be driving like a bat out of hell! I've had the same tires on my car for at least 2 years now and they still have plenty of tread left on them with plenty of city and highway miles.
Just a side note, that the earth already experiences a reduction in rotational speed as a side effect of having a satelite in orbit around it (the Moon). Think of it as a decelerating car... you hit your brakes, but someone nudges you from behind. You sill slow down, but it took just a bit longer for it to happen. This is the same thing, only the parameters are orders of magnitude smaller.
There would have to be some sort of counter-force to undo whatever this earthquake did to the planet's rotation, an 'anti-earthquake' of sorts. I don't see that happening in the immediate future.
This quake and all quakes are caused by shifts in the tectonic plates. The plates that shifted to cause this quake had such enormous potential energy, that when they finally buckled, the kinetic energy unleashed, something on the order of probably a 70-80,000 megaton yeild hydrogen bomb, created a disturbance that slightly 'pushed' one side of the planet in a vector, increasing our rotational velocity by some small degree. I wonder if this applied any force in a vector that ran perpendicular or in any other direction relative to the earth's rotation, possibly causing a gradual shift in our axis... Its obvious to me that it would be quite improbable that the force vector causing the increase in rotational velocity was directly inline with the earth's rotation, hence only causing an increase in our rotational velocity.
In sum, If it caused a 3 microsecond drop in our day time, who's to say that same force did not create some order of disturbance with our axis or quite possibly, our orbit? (Don't fret, the numbers are probably quite negligable). And no, it is unlikely that any gravitational forces will correct this change in rotational velocity.
Send it back. It's not AMD's fault. Next time, don't buy your shit from some company no one has ever heard of just to save a buck.
no one says that you shouldn't have the right to research what the doc is putting in your body. These advertisements give hardly any information that you would find useful.
Drug manufacturers should _not_ be advertising their drugs (unless they are over-the-counter) to the general population. Doctors are there to diagnose your problem and prescribe the correct medication. You have no business going to a doctor and telling him/her what drug you want to take to cure what ailes you, because unless you are a doctor, you probably don't really have a clue. The only people receiving advertising from the drug companies should be doctors and only doctors.
I stand corrected. Amazing how common misspellings eventually become part of the vernacular... and sad.
I always thought a Von Neuman machine was just a computer where the data and the instructions to be executed were stored in some temporary storage medium, like RAM...
Link
To both of you: only I and the makers of the Matrix are allowed to misspell 'cipher'... As it was a name of a rather blah character in the movie and has been the domain for my email address for quite some time, I think we have the monopoly on this one, pal(s). Please immediately cease your infringement on our intellectual properties so as to prevent this from becoming a _legal_ matter.
There is a lot of flaming going on here about the ethics of downloading these movies, etc, and not a lot of discussion about the implications of stated events. You might think that I'm one of those tin foil hat guys, but lets be serious.
The problem as the RIAA/MPAA sees it, with regards to file sharing, is not that you are depriving them of profits or that you have broken copyright law. They take issue with the fact that long-term use of file sharing to distribute their media will curtail their plans for purely subscription based services.
The RIAA, MPAA, cable companies, and other media companies are looking towards subscription based services where you are locked into a particular service. Right now, we have to pay a subscription fee to watch cable television. Its a steady, consistent form of income for the companies providing the service. The RIAA and MPAA would LOVE to migrate to subscription based services. Netflix and others are the beginning of this. Eventually, instead of getting DVDs in the mail, you will simply be able to punch it up on your TV for a monthly fee without the ability to copy it. Without an actual physical medium to distribute the content, copying becomes more difficult.
The real problem lies with the fact that a company (MPAA) can make a threat, and half way around the world a police force raids some place and arrests 30 people for an offence that is actually a civil matter, not a criminal one. The fact that the police and government forces are butting into civil matters is extremely frightening. It is one more nail in the coffin for civil rights and for freedom.
Call me crazy, but to me, this is the same thing as being arrested for slander. Sure, the person that I have slandered has every right to take me to court and work to receive compensation for my lies. But what right does the government have to come in and arrest you for it? There is a big difference between a civil offence and a criminal offence. It is a line that must be well defined in order to preserve individual liberties.
That was probably the case years ago, but there have been significant advances in creating these reactions in a controlled environment. The problem now is not controllability, it has been sustainability. Super-heated plasma would be used to generate the heat necessary to start the reaction, but inconsistencies would arrise in the flow of this plasma. Eddies would form and "cold spots" would form making the reaction stop. Apparently, they have used simulations to determine the best way to control these eddies and the plasma flow, thus making the reaction sustainable. I'm sure we'll see a working plant within 10-15 years or whenever a country decides they actually want to have one on their soil.
Not only that, according to this article that is posted somewhere above, it only lost 5 thermal tiles and landed within 5 feet of the runway center line with a 35 mph cross wind... on remote control!!! I'd like to see our shuttle pull that off.
Get it in writing. If they wont give you a guarantee of employment after your contract period is up (provided you performed to their expectations) step away from the table. It seems that a lot of tech jobs these days are becoming contract positions which is really a double edged sword.
Some people make out like bandits and basically run a small business that works with many different firms. However, this often does not work out as well as one hopes. You can go through dry seasons etc. where you get inadequate work so you'd better brush up on some basic accounting before you jump in. You've got no retirement benefits, no health insurance, a potentially unstable salary, rolling your own taxes every year, and a plethora of other things I've probably not though of.
Truth be told, you could stand to make a ton of money if you pull it off but just remember what you're getting yourself into. If you want to work the contract job with the hope of nabbing a full-time position, get it in writing before you become a pawn.
Let's say you are 8 years old and you know next to nothing about computing in general and the word 'encryption' piqued your interest. It is at this point that I would guide you to this so-called "primer". WTF do the editors do all day? You submit a well-written story with lots of information attached and you get rejected. You submit an 8 year old's intro to cryptography (i.e. "How to play Celebrity Cypher in your newspaper") and it makes front page. I hope those guys aren't paid to edit.