Junk Super Computer Assimilates All 182
VonGuard writes "The ACCRC is the relatively famous computer recycling non-profit in Berkeley that builds clusters out of old hardware. Make Blog has an article about the Center's plans to build a cluster out of the equipment people bring to recycle at Make Faire later this month. The ACCRC geeks are now able to integrate PII's or better into the cluster, which will be powered by Vegetable Oil and run Parallel Knoppix."
veggie oil? (Score:2, Insightful)
Why give them to a million dollar university ? (Score:0, Insightful)
when you could donate your old PC to a worthwhile charity, that would help the local or even an African community a lot more than some CS students messing about with Knoppix
universities should be donating their old stuff to the poor, not playing with Knoppix and acheiving very little (except a large electricity bill)
Re:veggie oil? (Score:5, Insightful)
I think their idea is to counteract the concept that for the same amount of power, they could be running much more powerful hardware. If the electricity comes from coal, they're wasting energy, but if it comes from biodiesel they're... uh... wasting energy in a way that sounds good to hippies?
Worth it? (Score:4, Insightful)
Re:Why give them to a million dollar university ? (Score:4, Insightful)
Saw this years ago on 20/20 or 60min (Score:3, Insightful)
BTW, he was talking of building a supercomputer way back then. So the group has put some thought into this.
If this turns out that it actually has some horsepower I can't wait to hear how it is put to use. The guy who started this is way ahead of the curve. Turning garbage into a self powered supercomputer...kewl!!
Re:Worth it? (Score:3, Insightful)
Re:What a colossal... (Score:4, Insightful)
Re:You must warn them all! (Score:3, Insightful)
Re:Why give them to a million dollar university ? (Score:3, Insightful)
Re:What a colossal... (Score:2, Insightful)
http://www.beowulf.org/archive/2003-March/009658.
http://www.beowulf.org/archive/2003-March/009662.
Re:veggie oil? (Score:4, Insightful)
Yes. But you'd add the inefficiency of having to transport the natural gas somehow. Which also costs energy. No, natural gas floating in pipes is *not* obviously that much more energy-efficient than electrons floating in wires, it depends on the details. (one thick pipe offers less friction than many small ones, higher voltage power-lines give lower losses)
if I remember my physics, correctly, the power lost during transmission is proportional to i^2 where i is the current.
Yeah. In absolute terms. But offcourse in this case your power transmitted is higher too, so your losses, measured as a percentage, doesn't go up that rapidly.
The oposite is also true though: If you up the voltage, then you can scale back the current needed for a certain power by the same amount, which leads to lower losses. Multiply your voltage by 10, and you can divide current by 10, and still transmit the same power. But at 1/10th the current, this means, by your formula, that the losses are now only 1/100th of what they where.
I thought the process of transforming the energy to and from that state was fairly inefficient (but better then sending it down the power line without doing it. It's been a long time.
Where'd you get that idea ? Large transformers achieve efficiencies in the 99.75% range, and even the small ugly wall-wart transformers that are mass-made at a buck a piece from the cheapest possible materials frequently manage to come in at 95%
It's like the fact that modern day farms are actually far less efficient then ones from 100 years ago, from an energy perspective.
Yes. But only from that perspective, which isn't the one we're trying to optimise for. Our current economical system optimises for production-efficiency. And a single person working on a farm produces probably 100 times more than a single person working on a farm did 100 years ago.
Energy isn't lacking. Not even *clean* energy is lacking, there's plenty of it to go around. The only reason it's not dominant is that currently non-clean energy is cheaper. It's perfectly possible to make clean energy enough to supply current and forseeable needs. But the thing is, with current tech it costs more. I don't know the numbers for US, but for example in Norway wind-power costs double of normal power (which is hydro with us, so also clean, but let's ignore that). In Germany there's a minimum prize given for home-produced energy of $0,50 or so, which is more than enough to make it a paying proposition (i.e. you make a *profit* by installing solar-cells on your roof), but which also happens to be like 4 times the price of conventional power.
A farm using only clean energy would still be a hell of a lot more efficient than the ones 100 years ago. But thing is: it'd be *less* (financially) efficient than the farms that burn oil. So that's what's happening.
But the scale is slowly tipping. The price of oil and gas has raised a lot, and ist likely to raise a lot more. The price of solar, wind, hydro, thermal and so on has all been falling steadily, and will continue to do so.