Does anybody remember the 8088? It was Intel's first stab at 32 bits. It came out before the 8086, but nobody was ready for the jump yet (amoung other reasons) so failed fairly quickly. Is Intel trying to jump the gun twice? This time they have a fierce competition.
Re:Arbiters... Something doesn't make sense.
on
Clockless Computing
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· Score: 2, Informative
I'm no expert but here's my best shot. Well, what is an arbiter? An arbiter is something will let a signal through unless there is a collision with another signal. But there is a place on the border of being a collision and going a certain way, it's hard to know which way to go. But what is a collision? If they both get there within 20 picoseconds? Say the left signal gets there first, but the right signal gets there 19 picosecond later. Do you let the left one pass? Or do you let the right one go because the left one got it last time?
This is the meta-stable line that the article refers to. So set up another state (a "close collision state)that detects the meta-stable case and alternate letting the signals pass. But by doing this you create another meta-stable line between the "go left/right" state and new "close collision". Say the time difference falls in the new meta-stable line. How do you decide? This is where it gets tricky because you always have a boundary between states, and the more logic you throw in an arbiter the longer it takes to process the common "only the right/left signal is here so i'll let it pass" state and all other states.
Also, the penalty for landing on the smaller meta-state will be proportional to how much more unlikely you made it to land on.
So instead of best case of 200 ps and a 10% chance of 300ps, your suggestion might be a best case of 220 ps and a 5% chance of 600ps. Remember, when talking pico seconds, nothing is free.
Yeah it's a shame they didn't say anything like "We remain a long way from fulfilling the full promise of asynchrony." in the last sentance of paragraph 6. Come on now. I thought they did a pretty good job of saying how much work still needs to be done. Would you rather have them report on technology as it hits market? I for one like to hear about stuff years away
But unfortunately money speaks before human rights. Who can argue with a country that houses that many users? We just really need one ISP to stand defiant in front the approaching communist tank.
It seems to me that this is another Microsoft attemp to appeal to the least common denominator. Bill want every blue haired grandmother to effortlessly tackle computing problems.
While I admit that this is a noble cause, it seems to me that with every release, Windows assumes the user is dumber and dumber (Hey, that paper clip thing really cares about me! I'm glad they made that cryptic fatal message a nice soothing color like blue!)
If Windows really wanted to crush Linux, it would develop features for the power user. It is unfathomable to me how unconfigurable Windows is. Now this rightfully falls into thrid party products.
God help us if Bill every gets around to addressing uber-geeks.
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I agree, you can't stop talented individuals( Remember the 7 line perl DVD hack?) No market level encryption scheme will survive long on the field.
Does anybody remember the 8088? It was Intel's first stab at 32 bits. It came out before the 8086, but nobody was ready for the jump yet (amoung other reasons) so failed fairly quickly. Is Intel trying to jump the gun twice? This time they have a fierce competition.
I'm no expert but here's my best shot. Well, what is an arbiter? An arbiter is something will let a signal through unless there is a collision with another signal. But there is a place on the border of being a collision and going a certain way, it's hard to know which way to go. But what is a collision? If they both get there within 20 picoseconds? Say the left signal gets there first, but the right signal gets there 19 picosecond later. Do you let the left one pass? Or do you let the right one go because the left one got it last time?
This is the meta-stable line that the article refers to. So set up another state (a "close collision state)that detects the meta-stable case and alternate letting the signals pass. But by doing this you create another meta-stable line between the "go left/right" state and new "close collision". Say the time difference falls in the new meta-stable line. How do you decide? This is where it gets tricky because you always have a boundary between states, and the more logic you throw in an arbiter the longer it takes to process the common "only the right/left signal is here so i'll let it pass" state and all other states.
Also, the penalty for landing on the smaller meta-state will be proportional to how much more unlikely you made it to land on.
So instead of best case of 200 ps and a 10% chance of 300ps, your suggestion might be a best case of 220 ps and a 5% chance of 600ps. Remember, when talking pico seconds, nothing is free.
Yeah it's a shame they didn't say anything like "We remain a long way from fulfilling the full promise of asynchrony." in the last sentance of paragraph 6. Come on now. I thought they did a pretty good job of saying how much work still needs to be done. Would you rather have them report on technology as it hits market? I for one like to hear about stuff years away
But unfortunately money speaks before human rights. Who can argue with a country that houses that many users? We just really need one ISP to stand defiant in front the approaching communist tank.
It seems to me that this is another Microsoft attemp to appeal to the least common denominator. Bill want every blue haired grandmother to effortlessly tackle computing problems. While I admit that this is a noble cause, it seems to me that with every release, Windows assumes the user is dumber and dumber (Hey, that paper clip thing really cares about me! I'm glad they made that cryptic fatal message a nice soothing color like blue!) If Windows really wanted to crush Linux, it would develop features for the power user. It is unfathomable to me how unconfigurable Windows is. Now this rightfully falls into thrid party products. God help us if Bill every gets around to addressing uber-geeks.