Honest question: gcc has the reputation of not producing the fastest code for x86, so why should I bother compiling gentoo with gcc or distcc? Does anyone know if there are distro's compiled with, say, the Intel compiler?
professional use
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The FragBook
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· Score: 5, Insightful
The first time I saw a gaming labtop was during a meeting. Discussing CAD or visual simulation works fairly well on such machines! It is great to see all you gamers drive the market, so I can work better.
i'll repeat myself on this topic: One of the artifacts of lower frame rates is ghosting, a form of temporal aliasing.
From sgi Ghosting. A true FAQ is why multiple images of objects like trees, house edges, the horizon, etc. are seen as the viewer turns. This is a form of "temporal aliasing" and is an attribute of having a frame rate which is less than the video refresh rate.
The problem is that a single image is scanned out onto the monitor several times before being changed. The repetition of a frame means that the image is temporally inaccurate for motion. Real moving objects do not stay in one place for a couple frame times and then move.
What's actually happening is that your eye is following an object, moving with the same angular velocity, which keeps the image stationary on the retina. Between two video refreshes of the same frame, your eye has moved, but the image on the screen has not. Consequently the image of the second frame appears at a different location on the retina, and you see a "ghost" image.
So a simulation running at 20Hz update on a display refreshing at 60Hz, the object will appear tripled. On large objects such as horizon silhouette, the effect manifests itself as multiple edges.
correct. One of the artifacts is ghosting, a form of temporal aliasing.
From sgi: Ghosting. A true FAQ is why multiple images of objects like trees, house edges, the horizon, etc. are seen as the viewer turns. This is a form of "temporal aliasing" and is an attribute of having a frame rate which is less than the video refresh rate.
The problem is that a single image is scanned out onto the monitor several times before being changed. The repetition of a frame means that the image is temporally inaccurate for motion. Real moving objects do not stay in one place for a couple frame times and then move.
What's actually happening is that your eye is following an object, moving with the same angular velocity, which keeps the image stationary on the retina. Between two video refreshes of the same frame, your eye has moved, but the image on the screen has not. Consequently the image of the second frame appears at a different location on the retina, and you see a "ghost" image.
So a simulation running at 20Hz update on a display refreshing at 60Hz, the object will appear tripled. On large objects such as horizon silhouette, the effect manifests itself as multiple edges.
with calligraphic lights you hit the screen with an extra, independent electron beam. This produces intense light points. These light points are useful in flight simulations, and I believe, required for some levels of certification of a sim.
The only difference now between the pro and game markets are the amount of ram/cache and those "pro" cards exist on PCs.
riiiight, unless you think E&S and Quantum3D are selling regular pc's, enlighten me on: - memory bandwith - dynamic resolution - genlocking - multi channel displays - hard real-time update rates - calligraphic lights
Of course I won't choose SGI every time I need some graphics horse-power. But if you need to get a really big job done in real time, PCs don't cut it yet.
How about this probability: most civilisations exist a limited time. There are many samples on earth that show that most cilisations fade away in a few thousand years or sooner.
In these few thousands of years, a civilisation has to develop sufficient technology to travel the stars, spend a lot of time travelling (beyond the life-span of its civilisation back on the planet?), and meet another civilisation that also exists for only a few thousands of years?
Although I think it is very likely that "aliens" exist, I won't hold my breath until we meet them.
Here are some pics and a description of the dutch system. It's easy to use.
All machines are standalone: hacking is hard, but you still have to do a lot of work collecting the data from all machines. I can't remember ever voting on paper, so I guess it has been around for at least 8 years. 85% of all cities and villages use the system.
Who gave you that idea? Basically, you can do pretty much everything, as long as it does not hurt anybody (other than yourself). However, freedom of speech is seriously limited. You cannot say hateful things, unless you are a left-wing politician attacking right-wing ideas.
The coffee served in the US tastes truly awful. That brownish fluid that allows you to trace your spoon to the bottom of your cup is a crime against humanity. Yes, it discourages the froggies, krauts and myself from staying longer periods in the US.
I have done my fair share of illegal street-skating in pedestrian areas. When skating through a crowd, one can either skate at walking speed in the main direction of movement of the crowd, or at a significantly higher speed in the opposite direction (depending on the crowd, between 10 and 15 km/h). At these higher speeds, the crowd seems to open up, and a series of gaps appears. I never cared to model this effect, but it does exist.
The thing that makes this unsafe is the presence of little kids that move all over the place and cyclists with different speeds.
My guess is that especially little kids will get hurt. Some cyclist will get hurt also, but they should not be in pedestrian areas anyway.
I am not sure what your hopes are. Current AI is effective in some areas, such as pattern recognition and searching through large combinatorial spaces. I may be oversimplifying AI, but to me it looks like math or operations research that has not been formalised well yet.
I have seen Genetic Algorithms perform on the same level as various local search methods on a real-life graph-colouring problem. Also, I have seen a simple back-prop neural net outperform human experts on a visual pattern-recognition task.
AI is just another tool in the toolkit to solve real-world problems.
Will it produce human-like intelligence? I don't really care, there's plenty of that kind of intelligence around anyway.
You have a rather optimistic view. 800x600 at 23x17 degrees may be fine for some data display, but for displaying the world, it's crap. One is legally blind if the field of view is less than 20 degrees. With the FOV of this product, you are still close to legally blind. I'm not sure on the resolution implications. With 20/20 vision, the eye has a resolution of one arcminute (60 pixels per degree). With this device, one has 35 pixels per degree, which is significantly less.
Yep. Military Operations in Urban Terrain is going to be very big, as the majority of the world population will be living in coastal cities in, say, 50 years.
I guess the rest of the planet could become spam refugees by subscribing to xs4all. However they'd still need some other ISP for their actual connection to the net (for now...)
Ideally, you need an image-update rate (FPS) that is equal to the refresh rate of your monitor. This can be 60Hz or 70Hz or so. If you run at 30 FPS and your monitor updates at 60 Hz, every image is drawn twice. When your eyes are tracking some object on the screen, they will make a smooth motion, while the object will appear twice, jump, appear twice, etc. This causes a ghosting effect (spatial aliasing): you will see a double image.
An other effect, of which I am not sure, may be that in games the I/O devices are sampled at the same speed as the graphics are drawn. Please contradict me on this one, because this would be bad. For smooth control of the game, I/O devices should be sampled at twice the monitor refresh-rate (remember nyquist?). If the sampling is independent, that's OK. If not, you need a very high FPS, which is a waste.
Most anti-hate laws are not about what we all agree on as crimes, such as beating up & killing.
They are about advocating hate in speech. The beating up of Rodney King would not fall under anti-hate laws, the PR of the KKK would. That does not mean that you cannot talk about minorities (or majorities), but you have to do it respectfully.
Public hate can disrupt society. It is clearly visible in the Balkan countries, Northern Ireland, the Bask region in Spain, etc.
I guess you feel that speech won't disrupt the american society. Lucky you.
I see your point. However, most west european nations have anti-hate laws (limiting the freedom of speech), because they believe that hate will lead to killing. Europeans are usually genuinly amazed by the freedom of speech of the KKK and the likes.
The scars left in europe by WWI and WWII are hard to explain to americans. Neonazis may seem irrelevant in the USA, but in europe they are a real concern. Even war-related hatred between the citizens of different european countries is sometimes still present. In europe, a lot of people are not sure WWII won't be repeated.
Personally, I think that anti-hate laws are a good thing. Freedom can only exist within limitations.
Slashdot Mirror
I suppose the inventors of computer graphics www.es.com and OpenGL had nothing to do with it.
Doom1 was an excellent 2.5D game when the big iron was already doing full-scene antialiased 3D.
Honest question: gcc has the reputation of not producing the fastest code for x86, so why should I bother compiling gentoo with gcc or distcc?
Does anyone know if there are distro's compiled with, say, the Intel compiler?
The first time I saw a gaming labtop was during a meeting. Discussing CAD or visual simulation works fairly well on such machines!
It is great to see all you gamers drive the market, so I can work better.
I reckon you have never been to the red-light district of Amsterdam...
i'll repeat myself on this topic:
One of the artifacts of lower frame rates is ghosting, a form of temporal aliasing.
From sgi
Ghosting. A true FAQ is why multiple images of objects like trees, house edges, the horizon, etc. are seen as the viewer turns. This is a form of "temporal aliasing" and is an attribute of having a frame rate which is less than the video refresh rate.
The problem is that a single image is scanned out onto the monitor several times before being changed. The repetition of a frame means that the image is temporally inaccurate for motion. Real moving objects do not stay in one place for a couple frame times and then move.
What's actually happening is that your eye is following an object, moving with the same angular velocity, which keeps the image stationary on the retina. Between two video refreshes of the same frame, your eye has moved, but the image on the screen has not. Consequently the image of the second frame appears at a different location on the retina, and you see a "ghost" image.
So a simulation running at 20Hz update on a display refreshing at 60Hz, the object will appear tripled. On large objects such as horizon silhouette, the effect manifests itself as multiple edges.
correct. One of the artifacts is ghosting, a form of temporal aliasing.
From sgi:
Ghosting. A true FAQ is why multiple images of objects like trees, house edges, the horizon, etc. are seen as the viewer turns. This is a form of "temporal aliasing" and is an attribute of having a frame rate which is less than the video refresh rate.
The problem is that a single image is scanned out onto the monitor several times before being changed. The repetition of a frame means that the image is temporally inaccurate for motion. Real moving objects do not stay in one place for a couple frame times and then move.
What's actually happening is that your eye is following an object, moving with the same angular velocity, which keeps the image stationary on the retina. Between two video refreshes of the same frame, your eye has moved, but the image on the screen has not. Consequently the image of the second frame appears at a different location on the retina, and you see a "ghost" image.
So a simulation running at 20Hz update on a display refreshing at 60Hz, the object will appear tripled. On large objects such as horizon silhouette, the effect manifests itself as multiple edges.
with calligraphic lights you hit the screen with an extra, independent electron beam. This produces intense light points. These light points are useful in flight simulations, and I believe, required for some levels of certification of a sim.
The only difference now between the pro and game markets are the amount of ram/cache and those "pro" cards exist on PCs.
riiiight, unless you think E&S and Quantum3D are selling regular pc's, enlighten me on:
- memory bandwith
- dynamic resolution
- genlocking
- multi channel displays
- hard real-time update rates
- calligraphic lights
Of course I won't choose SGI every time I need some graphics horse-power. But if you need to get a really big job done in real time, PCs don't cut it yet.
How about this probability: most civilisations exist a limited time. There are many samples on earth that show that most cilisations fade away in a few thousand years or sooner.
In these few thousands of years, a civilisation has to develop sufficient technology to travel the stars, spend a lot of time travelling (beyond the life-span of its civilisation back on the planet?), and meet another civilisation that also exists for only a few thousands of years?
Although I think it is very likely that "aliens" exist, I won't hold my breath until we meet them.
Here are some pics and a description of the dutch system.
It's easy to use.
All machines are standalone: hacking is hard, but you still have to do a lot of work collecting the data from all machines.
I can't remember ever voting on paper, so I guess it has been around for at least 8 years. 85% of all cities and villages use the system.
Release 0.1: /* DrawAdvertisement(Desktop); */
/* MakeThisReallyObscureCall () */
/* Have many functions contain side-effects */
Release 0.2:
Release 0.3:
Release 0.4:
Modify license. Say hello to competing projects.
Who gave you that idea?
Basically, you can do pretty much everything, as long as it does not hurt anybody (other than yourself).
However, freedom of speech is seriously limited. You cannot say hateful things, unless you are a left-wing politician attacking right-wing ideas.
The coffee served in the US tastes truly awful. That brownish fluid that allows you to trace your spoon to the bottom of your cup is a crime against humanity.
Yes, it discourages the froggies, krauts and myself from staying longer periods in the US.
I have done my fair share of illegal street-skating in pedestrian areas. When skating through a crowd, one can either skate at walking speed in the main direction of movement of the crowd, or at a significantly higher speed in the opposite direction (depending on the crowd, between 10 and 15 km/h).
At these higher speeds, the crowd seems to open up, and a series of gaps appears. I never cared to model this effect, but it does exist.
The thing that makes this unsafe is the presence of little kids that move all over the place and cyclists with different speeds.
My guess is that especially little kids will get hurt. Some cyclist will get hurt also, but they should not be in pedestrian areas anyway.
From indymedia:
So far, the verdict is "intermediate"; no motivation has been given yet.
Does anyone know if that means that the verdict can change?
Also, DB promised to involve the Dutch police. This could mean two lawsuits: one between DB and XS4ALL, and one between the Dutch DoJ and XS4ALL.
Taking a computer in the bath tub has always been my advise to the peoply i did not like...
I am not sure what your hopes are. Current AI is effective in some areas, such as pattern recognition and searching through large combinatorial spaces. I may be oversimplifying AI, but to me it looks like math or operations research that has not been formalised well yet.
I have seen Genetic Algorithms perform on the same level as various local search methods on a real-life graph-colouring problem. Also, I have seen a simple back-prop neural net outperform human experts on a visual pattern-recognition task.
AI is just another tool in the toolkit to solve real-world problems.
Will it produce human-like intelligence? I don't really care, there's plenty of that kind of intelligence around anyway.
Man, I still like the 8x8 subsample Antialiasing of the Reality Engine we bought in '93.
You have a rather optimistic view. 800x600 at 23x17 degrees may be fine for some data display, but for displaying the world, it's crap.
One is legally blind if the field of view is less than 20 degrees. With the FOV of this product, you are still close to legally blind.
I'm not sure on the resolution implications. With 20/20 vision, the eye has a resolution of one arcminute (60 pixels per degree). With this device, one has 35 pixels per degree, which is significantly less.
Yep. Military Operations in Urban Terrain is going to be very big, as the majority of the world population will be living in coastal cities in, say, 50 years.
I guess the rest of the planet could become spam refugees by subscribing to xs4all. However they'd still need some other ISP for their actual connection to the net (for now...)
Am I spamming by writing this?
Ideally, you need an image-update rate (FPS) that is equal to the refresh rate of your monitor. This can be 60Hz or 70Hz or so. If you run at 30 FPS and your monitor updates at 60 Hz, every image is drawn twice. When your eyes are tracking some object on the screen, they will make a smooth motion, while the object will appear twice, jump, appear twice, etc. This causes a ghosting effect (spatial aliasing): you will see a double image.
An other effect, of which I am not sure, may be that in games the I/O devices are sampled at the same speed as the graphics are drawn. Please contradict me on this one, because this would be bad. For smooth control of the game, I/O devices should be sampled at twice the monitor refresh-rate (remember nyquist?). If the sampling is independent, that's OK. If not, you need a very high FPS, which is a waste.
So who's compensating for the 190+ in your avarage of 140?
Most anti-hate laws are not about what we all agree on as crimes, such as beating up & killing.
They are about advocating hate in speech. The beating up of Rodney King would not fall under anti-hate laws, the PR of the KKK would. That does not mean that you cannot talk about minorities (or majorities), but you have to do it respectfully.
Public hate can disrupt society. It is clearly visible in the Balkan countries, Northern Ireland, the Bask region in Spain, etc.
I guess you feel that speech won't disrupt the american society. Lucky you.
I see your point. However, most west european nations have anti-hate laws (limiting the freedom of speech), because they believe that hate will lead to killing. Europeans are usually genuinly amazed by the freedom of speech of the KKK and the likes.
The scars left in europe by WWI and WWII are hard to explain to americans. Neonazis may seem irrelevant in the USA, but in europe they are a real concern. Even war-related hatred between the citizens of different european countries is sometimes still present. In europe, a lot of people are not sure WWII won't be repeated.
Personally, I think that anti-hate laws are a good thing. Freedom can only exist within limitations.