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Harvard supercomputing cluster hijacked to mine Dogecoin

arstechnica.com

31–40 of 91 posts

Re: Harvard supercomputing cluster hijacked to mine Dogecoin

#31
post #11

Earlier quoted context omitted.

Is it fair? That's a moral question. Kinda feels like stealing to me. And, anyway, if you were using electricity at a large enough scale to make this interesting, somebody would likely notice.

At which point does it stop being fair usage of a resource, and become stealing?

For me, a good rule of thumb is that if you feel you need to hide what you're doing from your landlord/employer/etc, then you're probably doing something wrong.

Re: Harvard supercomputing cluster hijacked to mine Dogecoin

#32

I'm currently "ignoring" a similar effort in my lab (~20 workstations). I don't think they've broken a MHash/s yet out of an estimated potential ~2-3MH.

We recently received an email about our Comp Sci labs (300+ GPU-equipped workstations) being used for bitcoin mining at night.

Re: Harvard supercomputing cluster hijacked to mine Dogecoin

#33
post #27

Earlier quoted context omitted.

Define non-negligible and show us some numbers. Mining is supposed to be difficult.

Here's a back of the envelope calculation. In theory (by supply-demand idea), you would make a negligible profit mining bitcoins. Each bitcoin is worth about $600. If our supply-demand assumption is true, the $2,160,000 dollars of Bitcoins that come into existence every day, that's also about $2,160,000 of electricity used. Or about 18,000,000 kWh per day. Or about 9,000,000 kg of C02 per day (9000 metric tonnes). Th…

> the $2,160,000 dollars of Bitcoins that come into existence every day, that's also about $2,160,000 of electricity used.

You lost me. What?

Re: Harvard supercomputing cluster hijacked to mine Dogecoin

#34
post #15

I'm hopeful that future cryptocurrencies won't be so energy-intensive to mine. Bitcoin is already a non-negligible contributor to global CO2 emissions, believe it or not. EDIT: Reversible computing ( http://en.wikipedia.org/wiki/Reversible_computing ) is a possible way to have computationally difficult proof-of-work while minimizing energy consumption.

How do you make something incapable of being energy-intensive but still difficult? The more computers have to work at something, the more energy they use. I'm not the world's leading expert, but I don't see a way around that.

Short answer: http://en.wikipedia.org/wiki/Reversible_computing

Re: Harvard supercomputing cluster hijacked to mine Dogecoin

#35
post #9
post #7

Earlier quoted context omitted.

That's a dead simple problem to fix. Just don't allow for unlimited free access to resources used for crypto currency mining.

but in a large building / campus, they can't possibly monitor electricity usage per individual or company occupying the space without upgrading the infrastructure significantly.

Just because you won't get caught doesn't make it right.

Re: Harvard supercomputing cluster hijacked to mine Dogecoin

#36

I'm hopeful that future cryptocurrencies won't be so energy-intensive to mine. Bitcoin is already a non-negligible contributor to global CO2 emissions, believe it or not. EDIT: Reversible computing ( http://en.wikipedia.org/wiki/Reversible_computing ) is a possible way to have computationally difficult proof-of-work while minimizing energy consumption.

I wonder if the energy spent moving/securing bitcoin is more or less than the energy we spend moving/securing cash/credit. Driving armored trucks full of cash and coins around isn't free. Nor is it free to keep the regular banking system's electronic infrastructure running.

Re: Harvard supercomputing cluster hijacked to mine Dogecoin

#37
post #27

Earlier quoted context omitted.

Here's a back of the envelope calculation. In theory (by supply-demand idea), you would make a negligible profit mining bitcoins. Each bitcoin is worth about $600. If our supply-demand assumption is true, the $2,160,000 dollars of Bitcoins that come into existence every day, that's also about $2,160,000 of electricity used. Or about 18,000,000 kWh per day. Or about 9,000,000 kg of C02 per day (9000 metric tonnes). Th…

> the $2,160,000 dollars of Bitcoins that come into existence every day, that's also about $2,160,000 of electricity used. You lost me. What?

A new block gets mined every 10 minutes, each with a 25BTC bounty. That's 600 * 25 * 6 * 24 = $2,160,000 per day. No rational person would spend more in electricity than the reward, hence the 1-to-1 conversion. (In fact, miners do spend more than they earn, collectively.)

Re: Harvard supercomputing cluster hijacked to mine Dogecoin

#38
post #27

Earlier quoted context omitted.

Here's a back of the envelope calculation. In theory (by supply-demand idea), you would make a negligible profit mining bitcoins. Each bitcoin is worth about $600. If our supply-demand assumption is true, the $2,160,000 dollars of Bitcoins that come into existence every day, that's also about $2,160,000 of electricity used. Or about 18,000,000 kWh per day. Or about 9,000,000 kg of C02 per day (9000 metric tonnes). Th…

> the $2,160,000 dollars of Bitcoins that come into existence every day, that's also about $2,160,000 of electricity used. You lost me. What?

That's based on the idea that if bitcoin mining is profitable, more people will get in on it until it eventually becomes break even with the cost of doing it.

This is of course a big simplification, and neglects things like the upfront cost of building the mining equipment.

Re: Harvard supercomputing cluster hijacked to mine Dogecoin

#39
post #27

Earlier quoted context omitted.

Here's a back of the envelope calculation. In theory (by supply-demand idea), you would make a negligible profit mining bitcoins. Each bitcoin is worth about $600. If our supply-demand assumption is true, the $2,160,000 dollars of Bitcoins that come into existence every day, that's also about $2,160,000 of electricity used. Or about 18,000,000 kWh per day. Or about 9,000,000 kg of C02 per day (9000 metric tonnes). Th…

> the $2,160,000 dollars of Bitcoins that come into existence every day, that's also about $2,160,000 of electricity used. You lost me. What?

[deleted]

Re: Harvard supercomputing cluster hijacked to mine Dogecoin

#40
post #15

I'm hopeful that future cryptocurrencies won't be so energy-intensive to mine. Bitcoin is already a non-negligible contributor to global CO2 emissions, believe it or not. EDIT: Reversible computing ( http://en.wikipedia.org/wiki/Reversible_computing ) is a possible way to have computationally difficult proof-of-work while minimizing energy consumption.

How do you make something incapable of being energy-intensive but still difficult? The more computers have to work at something, the more energy they use. I'm not the world's leading expert, but I don't see a way around that.

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