Actually you wouldn't want it to be a prime would you? You'd want the length to be the product of two primes, or the product of three primes it was to be a movie. If the length was a prime, you'd have no idea how to break it up, except to keep it as a 1D vector.
Not that I am a proponent of it one way or the other, but this would not necessarily be the case however if there is any validity to the idea of panspermia - http://en.wikipedia.org/wiki/Panspermia.
We need a far better particle accelerator onboard as well. The velocity of the particles coming out of these current ion drives simply isn't fast enough to get any real force. If we could accelerate the particles (usually Xenon I believe) to near light speed before they leave, we could be talking 5Gs of force. Until then, even a better power supply won't help too much.
Actually, the link in the grandparent post says specifically that the meisnner effect is distinct from the zero resistance, not a consequence of it.
"This constraint to zero magnetic field inside a superconductor is distinct from the perfect diamagnetism which would arise from its zero electrical resistance."
I've had my new Mac iBook (my first Apple purchase) for a little over a month now. My old compaq (750 MHz) laptop died finally from the compaq white screen of death and I needed a replacement. I'm still at University so money is tight; I wanted the PowerMac but the iMac was much more in my range (1300). The one thing I've noticed about it is that you never really notice lag from the processor... BUT... if you don't have like a gig of ram, you can get a lot of lag while multitasking (think all 4 Office apps, firefox, X11 and a couple terminals). Fortunately, adding ram is easier than I thought, and aftermarket ram for them is pretty cheap. Overall, I will probably be saving up for a new G5 desktop whenever I can afford it. I'm hooked!
No, SMT IS by definition the sharing of resources, in many cases because there isnt a thread level partitioning of resources this can be FASTER than multiple cores, which for your information is called CMP, chip multi-processing. Just because SMT shares resources doesn't mean that it doesnt have twice the resources as a normal non-SMT chip.
Actually I beg to differ. http://www.intel.com/technology/hyperthread/ says explicitly that HT is a form of SMT (simultaneous multithreading). The processor contains multiple PC registers which allow it to actually follow multiple threads simultaneusly -- which means grabbing instructions from multiple threads simultaneously. Again, this is really just an extension of superscalar, which could only grab instructions from a single thread.
You should probably get your terms right before you comment on it. HT is simply Intel's name for SMT (simultaneous multithreading). They didn't choose an optimal implementation and people shouldn't expect the same performance from it as you would from dual processors. SMT is simply an extension of the superscalar idea. Disconnect the dispatch mechanisms from the execution mechanisms and you can run an out of order processor a lot faster than an in order. Make multiple execution units and multiple fetches per cycle and you now have an n-way superscalar. A few more additions (mostly replication of units in the processor) and you can grab instructions from multiple threads instead of from the same thread (it is difficult to get lots of instructions per cycle from the same thread because of the high frequencies of branches in the code stream - and branch prediction isn't perfect).
Dual core is completely different, they simply put two processors on the same chip. Dual core has the problem that it cannot share the same resources between the two threads. The resources (execution units, queues, etc.) are partitioned x amount for thread 1 and x amount for thread 2. The designs are really very different, depending on the use, sometimes dual core is better, sometimes SMT is better. AMD's planning on bring out Dual Core SMT where each core will have 2 threads running through it for a total of 4 thread running simultaneous. If you want more information about this "throughput computing" google for Sun's Niagara chip.
I am doing my PhD research at University in computer architecture (more related to CPU than GPU but still very related), and this has been my experience with all simulators I've worked with. The one I am currently working with had a good infrastructure to start and now is a huge amalgamation of hacks. They also lack any sort of intuitive interface. They simulate properly but do not relate back to the typical diagram used to shot pipeline stages and component interconnects and flips flops. This can make it very difficult when you are brought in to work on a simulator you've never seen before. Typically any other simulator experience you have will not help since this one will be very different. Someone needs to create a strong and robust toolkit and infrastructure for CPU/GPU simulation -- perhaps for my thesis.
A pair of professors at my university are also working on a very similar book. When I first saw this one on slashdot I thought someone may have tried to rip them off. Some of you may want to check out this one too. It looks as though it may be a bit more formal (with both notation and language tone).
That sounds like its the kind of thing the poster was looking for, also what I myself may be looking for one day. If you don't mind me asking, what is the pay range for that type of work? Obviously not megabucks, but a decent living?
There are a lot of auctions out there exactly like this, with the profits going to less altruistic causes. Perhaps he should try re-auctioning them, instead of auctioning the gold, auction used pencils or paperclips or something simple and stupid but physical and tangible. Then, throw in XXXX amount of gold with each pencil or paperclip. I mean if a woman can auction her father's ghost via a walker (or cane, I forget which) then sure this can work. If all else fails, there are always those online gold exchange sites, but he probably wouldn't get neary as much cache for it.
You're not technically wrong in saying that. Babylon 5 was a space station in the series, so someone can be "from Babylon 5". Just don't say they're from Babylon 4 because that can just get confusing as hell with the whole time travel thing!
It is indeed much like a massively over-sized trackball. Except there is a treadmill type material on top. The major problem is that, like a treadmill that isnt turned on, you have to really push off to get it to move, so you're not at all walking naturally. Most of the time the soldiers training on them give up and use the thumbstick for movement.
This really seems like the sort of technology you'd want to show video of. Is the motion smooth, if you make a quick step forward then back will you fall as it keeps trying to move forward? These are the things I'd like to know. This is an awesome technology (if it works) and could be of great use to us where I work. We're currently working with omni-directional treadmills... which leave a lot to be desires as well as make noise that sounds like a jet engine.
I just realized as I read your comment how sad it is that I, at 20 years old, have never been able to walk outside and look up and think "There is a human up there". To me it may as well be ancient history. I guess I'm saying I just realized how much I'm really missing living in the era after NASA died.
Same reason people run emulators of their favorite retro game system. They usually don't have a real one. If we had real QComputers we wouldn't need the simulator. However, we don't have very powerful ones, and the few we have have VERY limited access. So why not perfect the algorithms before the computer gets here.
Computer science is no more about computers than astronomy is about telescopes.
Computer simulations of computers are nothing new. Just about everything is simulated before its ever made. My current research will be in simulating microarchitectures.
I really couldn't be happier with the way this is turning out. I hate spam as much as the next guy, but all of this is leading to a lot of legislation I'm not sure I want there. Thats a matter of opinion and I don't truly want to debate. What IS true here without a doubt is that many spammers are engaging in illegal activities in addition to spamming. Spammers are BAD people and there are things they deserve to go to jail for other than that.
Slashdot Mirror
Actually you wouldn't want it to be a prime would you? You'd want the length to be the product of two primes, or the product of three primes it was to be a movie. If the length was a prime, you'd have no idea how to break it up, except to keep it as a 1D vector.
Not that I am a proponent of it one way or the other, but this would not necessarily be the case however if there is any validity to the idea of panspermia - http://en.wikipedia.org/wiki/Panspermia.
We need a far better particle accelerator onboard as well. The velocity of the particles coming out of these current ion drives simply isn't fast enough to get any real force. If we could accelerate the particles (usually Xenon I believe) to near light speed before they leave, we could be talking 5Gs of force. Until then, even a better power supply won't help too much.
This is basically what I thought may have happened, but never had any proof one way or the other. Do you have any proof to back this up?
Actually, the link in the grandparent post says specifically that the meisnner effect is distinct from the zero resistance, not a consequence of it. "This constraint to zero magnetic field inside a superconductor is distinct from the perfect diamagnetism which would arise from its zero electrical resistance."
I've had my new Mac iBook (my first Apple purchase) for a little over a month now. My old compaq (750 MHz) laptop died finally from the compaq white screen of death and I needed a replacement. I'm still at University so money is tight; I wanted the PowerMac but the iMac was much more in my range (1300). The one thing I've noticed about it is that you never really notice lag from the processor... BUT... if you don't have like a gig of ram, you can get a lot of lag while multitasking (think all 4 Office apps, firefox, X11 and a couple terminals). Fortunately, adding ram is easier than I thought, and aftermarket ram for them is pretty cheap. Overall, I will probably be saving up for a new G5 desktop whenever I can afford it. I'm hooked!
No, SMT IS by definition the sharing of resources, in many cases because there isnt a thread level partitioning of resources this can be FASTER than multiple cores, which for your information is called CMP, chip multi-processing. Just because SMT shares resources doesn't mean that it doesnt have twice the resources as a normal non-SMT chip.
We can now see through lead? I feel my childhood collapsing around me... Science has just surpased Superman
Actually I beg to differ. http://www.intel.com/technology/hyperthread/ says explicitly that HT is a form of SMT (simultaneous multithreading). The processor contains multiple PC registers which allow it to actually follow multiple threads simultaneusly -- which means grabbing instructions from multiple threads simultaneously. Again, this is really just an extension of superscalar, which could only grab instructions from a single thread.
I'm sure you meant to type: "Please leave, you're making us feel inadequate" :)
You should probably get your terms right before you comment on it. HT is simply Intel's name for SMT (simultaneous multithreading). They didn't choose an optimal implementation and people shouldn't expect the same performance from it as you would from dual processors. SMT is simply an extension of the superscalar idea. Disconnect the dispatch mechanisms from the execution mechanisms and you can run an out of order processor a lot faster than an in order. Make multiple execution units and multiple fetches per cycle and you now have an n-way superscalar. A few more additions (mostly replication of units in the processor) and you can grab instructions from multiple threads instead of from the same thread (it is difficult to get lots of instructions per cycle from the same thread because of the high frequencies of branches in the code stream - and branch prediction isn't perfect). Dual core is completely different, they simply put two processors on the same chip. Dual core has the problem that it cannot share the same resources between the two threads. The resources (execution units, queues, etc.) are partitioned x amount for thread 1 and x amount for thread 2. The designs are really very different, depending on the use, sometimes dual core is better, sometimes SMT is better. AMD's planning on bring out Dual Core SMT where each core will have 2 threads running through it for a total of 4 thread running simultaneous. If you want more information about this "throughput computing" google for Sun's Niagara chip.
I am doing my PhD research at University in computer architecture (more related to CPU than GPU but still very related), and this has been my experience with all simulators I've worked with. The one I am currently working with had a good infrastructure to start and now is a huge amalgamation of hacks. They also lack any sort of intuitive interface. They simulate properly but do not relate back to the typical diagram used to shot pipeline stages and component interconnects and flips flops. This can make it very difficult when you are brought in to work on a simulator you've never seen before. Typically any other simulator experience you have will not help since this one will be very different. Someone needs to create a strong and robust toolkit and infrastructure for CPU/GPU simulation -- perhaps for my thesis.
A pair of professors at my university are also working on a very similar book. When I first saw this one on slashdot I thought someone may have tried to rip them off. Some of you may want to check out this one too. It looks as though it may be a bit more formal (with both notation and language tone).
That sounds like its the kind of thing the poster was looking for, also what I myself may be looking for one day. If you don't mind me asking, what is the pay range for that type of work? Obviously not megabucks, but a decent living?
There are a lot of auctions out there exactly like this, with the profits going to less altruistic causes. Perhaps he should try re-auctioning them, instead of auctioning the gold, auction used pencils or paperclips or something simple and stupid but physical and tangible. Then, throw in XXXX amount of gold with each pencil or paperclip. I mean if a woman can auction her father's ghost via a walker (or cane, I forget which) then sure this can work. If all else fails, there are always those online gold exchange sites, but he probably wouldn't get neary as much cache for it.
You're not technically wrong in saying that. Babylon 5 was a space station in the series, so someone can be "from Babylon 5". Just don't say they're from Babylon 4 because that can just get confusing as hell with the whole time travel thing!
It is indeed much like a massively over-sized trackball. Except there is a treadmill type material on top. The major problem is that, like a treadmill that isnt turned on, you have to really push off to get it to move, so you're not at all walking naturally. Most of the time the soldiers training on them give up and use the thumbstick for movement.
This really seems like the sort of technology you'd want to show video of. Is the motion smooth, if you make a quick step forward then back will you fall as it keeps trying to move forward? These are the things I'd like to know. This is an awesome technology (if it works) and could be of great use to us where I work. We're currently working with omni-directional treadmills... which leave a lot to be desires as well as make noise that sounds like a jet engine.
I just realized as I read your comment how sad it is that I, at 20 years old, have never been able to walk outside and look up and think "There is a human up there". To me it may as well be ancient history. I guess I'm saying I just realized how much I'm really missing living in the era after NASA died.
His name was Indigo. Its the accent that makes it sound different, but his name is Indigo, like the color.
Same reason people run emulators of their favorite retro game system. They usually don't have a real one. If we had real QComputers we wouldn't need the simulator. However, we don't have very powerful ones, and the few we have have VERY limited access. So why not perfect the algorithms before the computer gets here. Computer science is no more about computers than astronomy is about telescopes.
Computer simulations of computers are nothing new. Just about everything is simulated before its ever made. My current research will be in simulating microarchitectures.
The most powerful SimCity bot ever created!! Oh, and I suppose it can be used for other stuff too.
I really couldn't be happier with the way this is turning out. I hate spam as much as the next guy, but all of this is leading to a lot of legislation I'm not sure I want there. Thats a matter of opinion and I don't truly want to debate. What IS true here without a doubt is that many spammers are engaging in illegal activities in addition to spamming. Spammers are BAD people and there are things they deserve to go to jail for other than that.
Yep, I do indeed have a Sharp Zaurus. SL-5500 right now. Upgrading soon I hope.