Depends on what you mean by travel... Hydrogen is used in the rockets now. Having some on Mars means that we only need to take enough fuel for the one way trip and can make what we need for the return trip once we're there.
We can't send him. The powers that be have already decided he's to be Gov. of California in 2004 and President of the United States in 2012. The Secret Secret service won't allow it!
They'd have to carry a lot of liquid nitrogen... It's not impossible to build a craft this way; but, is suspect there's no way the shuttle could carry that much "fuel" load.
mirror the disk off of another one in a buddy's PC. Boot off of a USB drive. Ve Haf our Veys... Muahahhaha.
Seriously: When I worked in a PC tech center (OK, it was in '88-'89) we would fix f'd up Mac disks by mirroring off of a "master" (generic image) on our "test" machine.
I want the computer on my desk to be SILENT. I want to be able to hear my music. I don't really even want to hear disk chatter (but that might be acceptable).
I'm not saying I don't want the big file server; it just needs to be in the closet...
Read the revised draft(s) of the filing by SCO against IBM in Utah court. This is essentially what they claim.
There are also interviews with SCO's CEO and CTO (Byte for example) where they make similar claims.
They've even implied Microsoft is not totally in compliance, even though they have a liscense (which per SCO documents, only covers the Unix interface layer)
A real benchmark. Something that will bring ANY processor to it's knee's and provide a true performance test.
Get one of the physics guys to take some code and compile it on both platforms. We'll run the machines in a native mode. Use whatever compiler you want (although a standard compiler like gcc would be best) with all the optimization turned on for effect. Then crunch a big multi-gigabyte raw data files, like those generated by modern particle accelerators. Finally, feed the data into visualization utilities and display it.
Unfortunately, I'm no longer at a nuclear physics facility with access to this kind of data; otherwise, I'd do it myself. My 400Mhz P2 (linux box) used to take ~23 hours to make a first pass on a 2GB "raw" data file (which only represented 90 minutes of data btw). This will give you a real world feel for raw compute power and visualization power. If there is a significant difference, it should be obvious.
the question could be more fundamental. Does gravity have a speed? Consider this: light is a particle (wave) traveling along a many dimensional space-time membrane. Now, we've defined (more or less) what a photon is; and, how it behaves. We expect it to travel no faster than c. The problem is, we don't really undertand the space-time thing.
We have some theories as to how space is constructed. One of the things physics is trying to do is to create a theory that ties together space, time, gravity, energy, mass, quantum mechanics (basically everything). It's proving to be very difficult and gravity is the problem. Would a gravity wave have to obey all of the "laws of physics" as we know them? maybe not. Not if our theories are wrong. A lack of understanding wrt gravity might be why we need to make claims about "dark matter" and "dark energy" in order to explain the accelerating universe.
You have to remember that our "laws" are based on observation. The rules (like no speed exceeds c) are based on mathematical models created to explain the observations. What if the models are close, but wrong?
If I remember correctly, the numbers in one DOE newletter I read mentioned something like 15-20% of electrical generation is being used by computers (small computers, big computers, networks, etc, etc.)
You're "in physics"? I'm "in physics" and I can picture lots of reasons (simulations, data analysis) where I could justify a cluster. Well, OK my wife won't let me...
But, more to the point: put in fast internet access. Add a hardware firewall. Run that into a Switch / Router. Have a machine for development. A test environment (a separate machine so we don't hose the development machine). And any number of machines for cross compiles. Oh, and we can't forget the machine for my wife to surf on. Add a UPS big enough to support all of the above.
Now we're talking about a professional set-up that will easily take up a full rack.
Re:Does anyone really care anymore?
on
P4 3.2GHz Reviews
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· Score: 1
On a side note, what's happeneing with AMD these days? they seem to really be losing it at the high end, it terms of both value and performance. there 3200 seems only about as good as a p4 2800 of so.
they're pushing a technology that's getting long in the tooth, so to speak. To increase the effective speed, they've not increased the core clock rate, they've increased the cache. This is reflected in the benchmarks -- some will show it runs "like" a P4 @ 3200, others (which move more data in and out of the cache) will show lower numbers
The real improvements come with the Athlon 64 and Opteron. Not just because it's 64-bit; but, also because there are significant technological improvements...
Slashdot Mirror
Depends on what you mean by travel... Hydrogen is used in the rockets now. Having some on Mars means that we only need to take enough fuel for the one way trip and can make what we need for the return trip once we're there.
We can't send him. The powers that be have already decided he's to be Gov. of California in 2004 and President of the United States in 2012. The Secret Secret service won't allow it!
Patience my child. Patience.
This flight it was testing the fuel cells. So, your post should have read: "Yet another example of the dangers of Hydrogen power"
No, apparently it broke up in mid-air. Structural Failure.
Microsoft's stated policy wrt software support is End of Support after 5 yrs and End of Life after 7yrs.
As soon as someone gives me one... I'll get started.
a.) God awful expensive,
b.) no longer being manufactured.
Seriously: When I worked in a PC tech center (OK, it was in '88-'89) we would fix f'd up Mac disks by mirroring off of a "master" (generic image) on our "test" machine.
Tech1: Ok, let's bring the new server online.
Tech2: It's o....
*smoke* (uptime: 53ms)
Tech1: What happened? I thought these things didn't need fans...
Tech2: Slashdot effect!
I'm not saying I don't want the big file server; it just needs to be in the closet...
Why Why WHY???!!!
At 100k feet they're above most of the atmosphere. I'm not sure that there would be enough thermal airflow to add much lift.
Man, you screwed up. Or maybe The Matrix got it wrong. IBM's lawyers wear BLUE suits.
There are also interviews with SCO's CEO and CTO (Byte for example) where they make similar claims.
They've even implied Microsoft is not totally in compliance, even though they have a liscense (which per SCO documents, only covers the Unix interface layer)
Get one of the physics guys to take some code and compile it on both platforms. We'll run the machines in a native mode. Use whatever compiler you want (although a standard compiler like gcc would be best) with all the optimization turned on for effect. Then crunch a big multi-gigabyte raw data files, like those generated by modern particle accelerators. Finally, feed the data into visualization utilities and display it.
Unfortunately, I'm no longer at a nuclear physics facility with access to this kind of data; otherwise, I'd do it myself. My 400Mhz P2 (linux box) used to take ~23 hours to make a first pass on a 2GB "raw" data file (which only represented 90 minutes of data btw). This will give you a real world feel for raw compute power and visualization power. If there is a significant difference, it should be obvious.
You could conceivably get the best of both worlds: Pretty interface (Aqua), and a *nix underpinning.
Just a thought...
How about being able to fold your laptop up and fit it into a pocket? Not likely it's that small; but, it would be cool. No?
the question could be more fundamental. Does gravity have a speed? Consider this: light is a particle (wave) traveling along a many dimensional space-time membrane. Now, we've defined (more or less) what a photon is; and, how it behaves. We expect it to travel no faster than c. The problem is, we don't really undertand the space-time thing.
We have some theories as to how space is constructed. One of the things physics is trying to do is to create a theory that ties together space, time, gravity, energy, mass, quantum mechanics (basically everything). It's proving to be very difficult and gravity is the problem. Would a gravity wave have to obey all of the "laws of physics" as we know them? maybe not. Not if our theories are wrong. A lack of understanding wrt gravity might be why we need to make claims about "dark matter" and "dark energy" in order to explain the accelerating universe.
You have to remember that our "laws" are based on observation. The rules (like no speed exceeds c) are based on mathematical models created to explain the observations. What if the models are close, but wrong?
Just something to think about.
If I remember correctly, the numbers in one DOE newletter I read mentioned something like 15-20% of electrical generation is being used by computers (small computers, big computers, networks, etc, etc.)
You're "in physics"? I'm "in physics" and I can picture lots of reasons (simulations, data analysis) where I could justify a cluster. Well, OK my wife won't let me...
But, more to the point: put in fast internet access. Add a hardware firewall. Run that into a Switch / Router. Have a machine for development. A test environment (a separate machine so we don't hose the development machine). And any number of machines for cross compiles. Oh, and we can't forget the machine for my wife to surf on. Add a UPS big enough to support all of the above.
Now we're talking about a professional set-up that will easily take up a full rack.
Ethylene / Propylene Glycol. i.e. Antifreeze.
they're pushing a technology that's getting long in the tooth, so to speak. To increase the effective speed, they've not increased the core clock rate, they've increased the cache. This is reflected in the benchmarks -- some will show it runs "like" a P4 @ 3200, others (which move more data in and out of the cache) will show lower numbers
The real improvements come with the Athlon 64 and Opteron. Not just because it's 64-bit; but, also because there are significant technological improvements...