Most DB's are sudo threaded. They run multiple single threaded processes and do have issues scaling. To be fair, it is also the application design that limits scalability, not just the database.
For a very simple example, you could choose to traverse a table sequentially, or you could split it into smaller chunks and perform multiple operations in parallel.
The problem on a single or small number of processors is that if you make your application highly threaded, you will generate a huge amount of context switches.
If you get really threaded then have a look at Sun's T2 processor. That's the future!
If you use RFID chips embedded in the roads, you could quickly and cheaply create electronic lanes on all your roads.
Punching them into existing roads would be easy. All you need to do is insure they are replaced (like road markings) when the road is dug up or re-laid.
They are all wrong anyway! There was no margin of error reported. If you RTFA the 2M years was the range in which the dust formed onto mountain sized clumps (or what every you want to call them).
Testing and observation is fundamental to science.
It is what is missing from modern theoretical science and as the scientists slowly disappear up their own theoretical asses we are going to end up with nothing practical to show for it!
Bring back big bangs, mega voltages and currents, huge magnetic fields and eddies... Tesla had the right idea.
"If it doesn't make your hair stand on end, then its not science!"
It's not hard to store.... just keep it in water! You can always use a Joe Cell to extract it later (bad joke).
Yes you are pointing out an obvious flaw in the whole hydrogen economy, but it is more to do with who will have control over the energy supply than it is about the mode of energy.
If you switch to hydrogen you need an infrastructure to manufacture and distribute it. So who do you trust to do that?
Sorry, that article had no content for me. It was full of praises and light on detail.
Myself, I have nearly 20 years experience in UNIX (scary but true). I'm a Solaris engineer, have run Solaris, Suse, Ubuntu and Windows for my desktop at work and at home.
I work with computers every day but my attitude at home is that I put on my "dumb user" hat and don't want to have to think.
I love Ubuntu, but unfortunately it makes me have to think, so unfortunately at home Windows gets booted more often. If Tux wasn't so cute my kids wouldn't know what Ubuntu was.
If I was not a UNIX engineer my Ubuntu installations would not be running the native resolution of the monitors, dual head monitors would not work, the wireless card in my laptop would not work, the audio drivers would be wrong and the volume control would give bizarre results. The list goes on. All these things required the manual edit of files and/or searching forums for driver information, things that I did not have to do to get Windows to run the same hardware.
Considering the recent article on/. about new fuel cell technology. This could be coupled to a fuel cell to turn the waste heat to electricity. Then the only by-product will be H20 (and maybe CO2 depending on the fuel source).
They burn oil because the apex and side seals need to be lubricated by injecting oil into the engine, not because of any sealing problem. Mazda solved sealing problems long ago.
The RX8 is a huge improvement over the RX7 for reduced emissions and oil consumption. Quite obviously there is room for a lot more improvement, Mazda are the only manufacturer who have spent R&D on it. The engine exceeds 2008 emissions requirements.
Where there is still plenty of room for improvement is the fuel efficiency. With some R&D spent on exotic materials that need less oiling (which they are using to a small degree already) the oil usage could be solved entirely. With more advanced port design, direct injection, ultra lean burning (something a non-turbo rotary can do on very low octane fuel) there is a lot of head room for fuel efficiency improvements.
The rotary engine has very few moving parts, it is physically small and light for the power that it produces and yet other than the housings is still mostly made of cast iron. Yet they are very popular for light weight aircraft because of their size, weight and RELIABILITY.
The use of modern alloys like piston engines will make it unbeatable power to weight for a naturally aspirated engine, but unfortunately Mr Mazda can only spend so much in R&D. If the rotary engine had 1% of the R&D that the piston engine has it would surpass them all.
-- Call me collect on 09F911 029D74 E35BD8 4156C5 635688 C0
Yay the rotary! Considering there's only one car manufacturer putting development in the the wankel engine the RX8 is an amazing achievement. Imagine if it had the same R&D poured into it as the piston engine!
Pistons are fundamentally flawed, they go up and stop then down and stop... what's up with that?
Anyway a 15% improvement in efficiency will only result in 15% bigger SUV's.... I know how you Americans think!
Through personal interest, I've read a few studies into twin behaviours and one interesting result identified in identical twins separated at birth is the "degree of religiousness".
Its a subjective sort of measurement, however there was a definite correlation to the dedication toward religious believes based on genetic make up despite upbringing.
There's a lot more to thins than meets the eye. You can't rule out genetics.
Good on ya mate. That's the fighting spirit!
Some people will read what I wrote and jump into their SUV and feel happy again. It is that inability to adapt that I am making a point of, not that we should let disaster happen and let Darwin decide who survives. We are more than that.
The earth is constantly changing, we can try to reduce our impact on those changes but we cannot expect the earth to stay the same.
Why are humans now so afraid of change? It is the human ability to adapt to change that has made us so successful as a species on this planet (along with sparrows and cockroaches). It is through hardship and experimentation that we evolve our survival abilities, if we keep the earth the same as it is today we will just stagnate and ultimately become extinct when the earth finally does throw up an extinction scenario. We may have a very rich and diverse life on planet earth at the moment, but standing back and looking at the billion year picture, we're just a grain of sand about to swept away. We cannot harm earth, but it can harm us. We must ascend our reliance on the status quo and become more than just naked apes.
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hahaha. It was my keyboard. I had nothing to do with it. It just types what it assumes I think.
Most DB's are sudo threaded. They run multiple single threaded processes and do have issues scaling. To be fair, it is also the application design that limits scalability, not just the database.
For a very simple example, you could choose to traverse a table sequentially, or you could split it into smaller chunks and perform multiple operations in parallel.
The problem on a single or small number of processors is that if you make your application highly threaded, you will generate a huge amount of context switches.
If you get really threaded then have a look at Sun's T2 processor. That's the future!
In the time scale of the universe, it could happen any moment.
In fact it may have happened many times over. We are just living in the particular parallel universe that it has not happened in... yet.
If you use RFID chips embedded in the roads, you could quickly and cheaply create electronic lanes on all your roads.
Punching them into existing roads would be easy. All you need to do is insure they are replaced (like road markings) when the road is dug up or re-laid.
Imagine how long the primary elections would take with that many States!
Hilary might just have a chance.
Acid 3 fails the IE test getting a best score of 17%.
Get with the program guys.... M$ discovered the Internet. It's theirs to stick their flag on wherever they like!
(Bloody natives getting restless again)
They are all wrong anyway! There was no margin of error reported. If you RTFA the 2M years was the range in which the dust formed onto mountain sized clumps (or what every you want to call them).
Put the airports 15 hours drive away from civilisation. Problem solved!
What? There are people outside of the USA? I thought there were only savages!
What are you going to do when you find out the aliens that inhabit those stars have already named them?
Dude. Do you drive your car on full throttle 100% of the time?
Bet you have a bumper sticker written in mirror image on the front of you car saying "GET OUT OF MY WAY!"
Testing and observation is fundamental to science.
It is what is missing from modern theoretical science and as the scientists slowly disappear up their own theoretical asses we are going to end up with nothing practical to show for it!
Bring back big bangs, mega voltages and currents, huge magnetic fields and eddies... Tesla had the right idea.
"If it doesn't make your hair stand on end, then its not science!"
It's not hard to store.... just keep it in water! You can always use a Joe Cell to extract it later (bad joke).
Yes you are pointing out an obvious flaw in the whole hydrogen economy, but it is more to do with who will have control over the energy supply than it is about the mode of energy.
If you switch to hydrogen you need an infrastructure to manufacture and distribute it. So who do you trust to do that?
Was it not Bill himself who said you would never need more than 64K of memory? Well it's official, you don't need any number greater than 64K either!
Just remember Micro$oft knows best... move along, nothing to see here.
Changing the past happens all the time!
The holocaust did not happen
Thatcher was a great leader
I did not have sexual relations with that woman
Why has it taken so long for man to make one? Woman worked out how to do it long ago!
I'm placing my order for a spooky modem.
Who's going to re-write ping to cope with a less than 0 latency!
Sorry, that article had no content for me. It was full of praises and light on detail.
Myself, I have nearly 20 years experience in UNIX (scary but true). I'm a Solaris engineer, have run Solaris, Suse, Ubuntu and Windows for my desktop at work and at home.
I work with computers every day but my attitude at home is that I put on my "dumb user" hat and don't want to have to think.
I love Ubuntu, but unfortunately it makes me have to think, so unfortunately at home Windows gets booted more often. If Tux wasn't so cute my kids wouldn't know what Ubuntu was.
If I was not a UNIX engineer my Ubuntu installations would not be running the native resolution of the monitors, dual head monitors would not work, the wireless card in my laptop would not work, the audio drivers would be wrong and the volume control would give bizarre results. The list goes on. All these things required the manual edit of files and/or searching forums for driver information, things that I did not have to do to get Windows to run the same hardware.
Wake me up when I can wear my dumb user hat.
Considering the recent article on /. about new fuel cell technology. This could be coupled to a fuel cell to turn the waste heat to electricity. Then the only by-product will be H20 (and maybe CO2 depending on the fuel source).
Has potential?
They burn oil because the apex and side seals need to be lubricated by injecting oil into the engine, not because of any sealing problem. Mazda solved sealing problems long ago.
The RX8 is a huge improvement over the RX7 for reduced emissions and oil consumption. Quite obviously there is room for a lot more improvement, Mazda are the only manufacturer who have spent R&D on it. The engine exceeds 2008 emissions requirements.
Where there is still plenty of room for improvement is the fuel efficiency. With some R&D spent on exotic materials that need less oiling (which they are using to a small degree already) the oil usage could be solved entirely. With more advanced port design, direct injection, ultra lean burning (something a non-turbo rotary can do on very low octane fuel) there is a lot of head room for fuel efficiency improvements.
The rotary engine has very few moving parts, it is physically small and light for the power that it produces and yet other than the housings is still mostly made of cast iron. Yet they are very popular for light weight aircraft because of their size, weight and RELIABILITY.
The use of modern alloys like piston engines will make it unbeatable power to weight for a naturally aspirated engine, but unfortunately Mr Mazda can only spend so much in R&D. If the rotary engine had 1% of the R&D that the piston engine has it would surpass them all.
--
Call me collect on 09F911 029D74 E35BD8 4156C5 635688 C0
Yay the rotary! Considering there's only one car manufacturer putting development in the the wankel engine the RX8 is an amazing achievement. Imagine if it had the same R&D poured into it as the piston engine!
Pistons are fundamentally flawed, they go up and stop then down and stop... what's up with that?
Anyway a 15% improvement in efficiency will only result in 15% bigger SUV's.... I know how you Americans think!
Consumption is the key work there! As soon as a "green" solution is found everyone thinks they can return to their addiction to over use.
That will be the animal that voted for Bush in the last two elections.
Sad, very sad. Could it be Christian extremists could be more extreme than Muslim extremists?
Through personal interest, I've read a few studies into twin behaviours and one interesting result identified in identical twins separated at birth is the "degree of religiousness".
Its a subjective sort of measurement, however there was a definite correlation to the dedication toward religious believes based on genetic make up despite upbringing.
There's a lot more to thins than meets the eye. You can't rule out genetics.
Good on ya mate. That's the fighting spirit! Some people will read what I wrote and jump into their SUV and feel happy again. It is that inability to adapt that I am making a point of, not that we should let disaster happen and let Darwin decide who survives. We are more than that. The earth is constantly changing, we can try to reduce our impact on those changes but we cannot expect the earth to stay the same.
Why are humans now so afraid of change? It is the human ability to adapt to change that has made us so successful as a species on this planet (along with sparrows and cockroaches). It is through hardship and experimentation that we evolve our survival abilities, if we keep the earth the same as it is today we will just stagnate and ultimately become extinct when the earth finally does throw up an extinction scenario. We may have a very rich and diverse life on planet earth at the moment, but standing back and looking at the billion year picture, we're just a grain of sand about to swept away. We cannot harm earth, but it can harm us. We must ascend our reliance on the status quo and become more than just naked apes.