You can also have names with spaces in them which is what catches my wife out a lot, she's got a double barreled surname only instead of a hyphen she has a space between the two. One last name made up of two separate words.
There is also the celtic tradition of using your last middle name as a first name, I know quite a few people who do this, one particularly common example in Ireland is for people to have an extra first name of Patrick although that one would never be used outside of passports and other official documentation.
google are involved in this at some level, they have a project where they ship storage arrays to science labs who then load it up with data before google ship it to the universities who use it. It's the old cartload of tapes argument again!
But 1850's houses are *better* than modern houses, you do know that don't you? The sad thing is I actually suspect your analogy still holds however, there is little evidence software is getting better quality over time, simply broader in scope.
Joel On Software is a good site if you want to understand some of the issues in software engineering, in particular this article springs to mind.
Two things here, firstly if a car is belting out think black smoke then it would kill a catalytic converter *very* quickly, secondly catalytic converters are only catalysts, that is they don't to any magic, all they do is speed up a chemical reaction which would normally take about two years into a few seconds. This makes them good for local pollution levels but they give "zero" over a fairly short term (two years). I say "zero" but it's worse than this as they use heavy metals to make this zero benefit which actually makes them bad for the environment as a whole. The *only* place they make sense is in cities where localised pollution or smog is a problem, say LA and to a lesser london.
This is compounded in the UK at least by the fact that legislation says they must work after x seconds from cold which means they manufactures make them so they warm up quickly rather than work efficiently when at temperature.
Your *much* better of buying a more efficient car in the first place and getting it tuned occasionally so it never gets to a state where it pumps out thick black smoke.
One of the problems with computers this size is that there are so many components the MTBF of the whole system can be measured in literally hours. Most of this will be disk failures and RAID will help here but you still find that any given job spanning the whole machine simply cannot run for more than a day or so before part of the computer dies on it. A normal usage pattern for this type of machine (as much as these machines are normal) is to have 15-20 or more smaller jobs running simultanously for longer periods of time.
Another thing to note is that efficiency of these machines is often quoted as percent of theoretical peak, anything over 80% would be *very* impressive.
To build a HPC supercomputer from a cluster you need a parallel network, you can chose between Quadrics, Myrinet or, (if you don't mind it not working) Infiniband. All of these work with Linux and have made large Linux clusters.
What cray are doing is interesting and is going to result in a big computer but it's in the same ballpark as current Linux supercomputers. They are competitiors, they do not dominate the playing field by any means.
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You can also have names with spaces in them which is what catches my wife out a lot, she's got a double barreled surname only instead of a hyphen she has a space between the two. One last name made up of two separate words.
There is also the celtic tradition of using your last middle name as a first name, I know quite a few people who do this, one particularly common example in Ireland is for people to have an extra first name of Patrick although that one would never be used outside of passports and other official documentation.
google are involved in this at some level, they have a project where they ship storage arrays to science labs who then load it up with data before google ship it to the universities who use it. It's the old cartload of tapes argument again!
But 1850's houses are *better* than modern houses, you do know that don't you? The sad thing is I actually suspect your analogy still holds however, there is little evidence software is getting better quality over time, simply broader in scope.
t Abstraction.html
Joel On Software is a good site if you want to understand some of the issues in software engineering, in particular this article springs to mind.
http://www.joelonsoftware.com/articles/Developmen
Two things here, firstly if a car is belting out think black smoke then it would kill a catalytic converter *very* quickly, secondly catalytic converters are only catalysts, that is they don't to any magic, all they do is speed up a chemical reaction which would normally take about two years into a few seconds. This makes them good for local pollution levels but they give "zero" over a fairly short term (two years). I say "zero" but it's worse than this as they use heavy metals to make this zero benefit which actually makes them bad for the environment as a whole. The *only* place they make sense is in cities where localised pollution or smog is a problem, say LA and to a lesser london.
This is compounded in the UK at least by the fact that legislation says they must work after x seconds from cold which means they manufactures make them so they warm up quickly rather than work efficiently when at temperature.
Your *much* better of buying a more efficient car in the first place and getting it tuned occasionally so it never gets to a state where it pumps out thick black smoke.
I think it already is the case today, at least for the winners.
And as for having to re-prime them every thirty days? Isn't that what cron is for?
One of the problems with computers this size is that there are so many components the MTBF of the whole system can be measured in literally hours. Most of this will be disk failures and RAID will help here but you still find that any given job spanning the whole machine simply cannot run for more than a day or so before part of the computer dies on it. A normal usage pattern for this type of machine (as much as these machines are normal) is to have 15-20 or more smaller jobs running simultanously for longer periods of time.
Another thing to note is that efficiency of these machines is often quoted as percent of theoretical peak, anything over 80% would be *very* impressive.
I have no idea why they are good but my next car is going to have those headlights
To build a HPC supercomputer from a cluster you need a parallel network, you can chose between Quadrics, Myrinet or, (if you don't mind it not working) Infiniband. All of these work with Linux and have made large Linux clusters.
What cray are doing is interesting and is going to result in a big computer but it's in the same ballpark as current Linux supercomputers. They are competitiors, they do not dominate the playing field by any means.
4, 5 and 7 are also Linux.
uid 400000+??? I didn't know this was some kind of race. Now do I increase mine?
I assume you mean "nearly" ten years rather that "about" ten years, it's not debians birthday for another two weeks yet :)
Lustre is a open-source project to develop a proper network filesystem for this kind of cluster. NFS just doesn't cut the mustard at this scale.
It's hosted on sourceforge, not to difficult to find.
This is not news, most of these thing's I've used run NT, and if the hardware manage that Linux should be a breeze.