Topic: Unknown miner growing rapidly in mining % share (Read 6133 times)
my bad brehs
The Cray Titan uses AMD Opteron cpu's combined with nVidia Tesla GPU cards. It has 18688 of each...
You are right that supercomputers are designed to do parallel computations and are not general purpose computers. They are great for bitcoin mining, but they are still far too weak to present a threat.We don't have to try to convert petaflops to hash rates. Let's assume best case here. nVidia GPUs are not suitable for mining bitcoins but what if the GPUs were AMD 7970's instead? Then, 18688 AMD 7970's would have a total hash rate of about 18688*650 Mh/s or about 12 Th/s.
The total network is about 180 Th/s, so this super computer with only 12 Th/s is still not nearly enough to mount a 51% attack.
Most supercomputers are built for performing general computing tasks that require huge resources because of their inherent complexity. The processors must be able to perform a extremely wide range of operations. But in bitcoin this is completely not the case... we need high speed hashing of SHA-256 algorithm... ie. the same few operations over and over as fast as possible and running in parallel as many times as the hardware allows for. The hardware in each case are almost like polar opposites.
I have to disagree with this. Most supercomputers are built for massively parallel operations, and the really quick ones use -- you guessed it, graphics cards from common vendors like nVidia to achieve this.
Simulating a nuclear detonation or parts of the human thought process is of course more complex than SHA-256, but that does not preclude such systems from having a lot of hashing power either.
The Cray Titan uses AMD Opteron cpu's combined with nVidia Tesla GPU cards. It has 18688 of each, and it is rated at a theoretical peak of 27 peta flops. How many flops for 1 hash? I don't honestly know. If it is 1000, then it could hash at 10^6 Mhash/s, which is pretty good (1000 THash/s) - plenty for a 51% attach if my finger math is correct.
Anyway, I'm not talking about the supercomputers we know about. I'm talking about stuff that is hidden away, things we don't know about. One reason the US government isn't doing very much to stop Bitcoin might be because it knows that it can stop it anytime it wants to, by the flick of a switch.
-Michael
There are some "private" mining pools for members with at least 200 ghash/s or more. That may answer your questions about unknown.
you don't need supercomputers. anyone with too much money and the desire to do so could easily get over 51%. The easiest way would be to steal one of the current asic designs, have your own boards built for your own use and mine away. It might be neat to see people's reactions when hashing power doubled or tripled from one second to the next. Could be fun.
I think 51% can be done quite easy for the U.S. government: they need special squads/agents to take over of 2 or 3 biggest mining pools. This can be done even if pools are operated outside of the U.S., and even can be done remotely. But i guess, to have more confidence they would need to send special people to pool operators (-; Hell, at the moment we cannot be sure that some of the pools are already in control of governments....
This would only work for as long as the pool miners continued to run their workers. As soon as word of the takeover got around, miners would stop using these pools and Bitcoin could get back to normal operations.
But the US does have some serious supercomputing hardware at its disposal. I wouldn't be surprised if they could take over Bitcoin quite easily at any moment.
-Michael
necro
The sum total hashing power of every supercomputer in the world is much less than the total hashrate of bitcoin. Supercomputer almost always run computations that are rely heavily on CPU, memory, and I/O resources, but these are not suitable or optimal for mining bitcoins at all. Not only was this case true just with GPU miners contributing to the bitcoin network hashrate, but now that we have ASICs...
Most supercomputers are built for performing general computing tasks that require huge resources because of their inherent complexity. The processors must be able to perform a extremely wide range of operations. But in bitcoin this is completely not the case... we need high speed hashing of SHA-256 algorithm... ie. the same few operations over and over as fast as possible and running in parallel as many times as the hardware allows for. The hardware in each case are almost like polar opposites.
I think 51% can be done quite easy for the U.S. government: they need special squads/agents to take over of 2 or 3 biggest mining pools. This can be done even if pools are operated outside of the U.S., and even can be done remotely. But i guess, to have more confidence they would need to send special people to pool operators (-; Hell, at the moment we cannot be sure that some of the pools are already in control of governments....
This would only work for as long as the pool miners continued to run their workers. As soon as word of the takeover got around, miners would stop using these pools and Bitcoin could get back to normal operations.
But the US does have some serious supercomputing hardware at its disposal. I wouldn't be surprised if they could take over Bitcoin quite easily at any moment.
-Michael
The units in those posts were mining on known pools, so they wouldn't have reported as unknown.
One issue with linking the huge changes in unkown miners to Avalon is that in this post he knew Avalon was mining with his units because of stored pool information (indicates they were not solo mining with these particular units). Perhaps Avalon was scared off of mining with customers units since they were discovered and abandoned a sizable solo hashing operation as well.
My bet is on Avalon having a stockpile of many thousands of BTC from solo mining and that this particular miner's Avalon units are just the tip of the iceberg.
My bet is on Avalon having a stockpile of many thousands of BTC from solo mining and that this particular miner's Avalon units are just the tip of the iceberg.
The units in those posts were mining on known pools, so they wouldn't have reported as unknown.
The unknown % has suddenly dropped down to 6% immediately after it was revealed that Avalon has been mining using customers' units.
See: https://bitcointalksearch.org/topic/is-avalon-mining-with-customer-hardware-answer-is-here-236348.
One issue with linking the huge changes in unkown miners to Avalon is that in this post he knew Avalon was mining with his units because of stored pool information (indicates they were not solo mining with these particular units). Perhaps Avalon was scared off of mining with customers units since they were discovered and abandoned a sizable solo hashing operation as well.
My bet is on Avalon having a stockpile of many thousands of BTC from solo mining and that this particular miner's Avalon units are just the tip of the iceberg.
See: https://bitcointalksearch.org/topic/is-avalon-mining-with-customer-hardware-answer-is-here-236348.
One issue with linking the huge changes in unkown miners to Avalon is that in this post he knew Avalon was mining with his units because of stored pool information (indicates they were not solo mining with these particular units). Perhaps Avalon was scared off of mining with customers units since they were discovered and abandoned a sizable solo hashing operation as well.
My bet is on Avalon having a stockpile of many thousands of BTC from solo mining and that this particular miner's Avalon units are just the tip of the iceberg.
There could be several pools contributing to the unknown -- it's likely not just one pool.
Quote
Avalon, Asicminer, and BFl are using 110 and 62 nanometer technology for their ASICS
That would make Intel or Samsung? the greatest threat then. They seem to be quite happy making billions from new mobile chips on 26nm, taking time out to destroy the utterly inconsequential BTC empire (to them) has probably not registered in their brains.
I think it'd be funny if they included BTC relevant instructions on their integrated gpu part of their cpu, they should do it but unfortunately I doubt it. Surely AMD should have refined this all ages ago, they must have commented about it
The gov in this matter is reliant on private industry, forcing protocols, laws yea but without seizure mass production they do not have
As with most conspiracies this quote covers it:
Quote
Never ascribe to malice that which is adequately explained by incompetence
Only BTC can destroy itself is my take, not sure how but fraud is the most obvious. Some kind of short circuit where asic process developments make it too easy for difficulty to compensate but that seems unlikely to be true currently
According to blockchain.info:
Quote from: http://blockchain.info/pools
A large portion of Unknown blocks does not mean an attack on the network, it simply means we have been unable to determine the origin.
Unknown Blocks.
Relayed By count
199.48.164.36 5
122.128.109.61 3
126.79.45.236 2
this 199.48.164.36 address, is owned by Goodluck Jonathan
Relayed By count
199.48.164.36 5
122.128.109.61 3
126.79.45.236 2
this 199.48.164.36 address, is owned by Goodluck Jonathan
Now its at 16%. Guess this is either new Avalon owners solo mining or Avalon testing new units.
I love how smug and certain so many of you are though. Lets just hope it's not really a malicious actor.
I love how smug and certain so many of you are though. Lets just hope it's not really a malicious actor.
Hey guys you re not seeing the obvious.
The unknown player is just that a pool named "unknown"... And they are now laughing at us.
Joke aside didnt the protcol been changed so validations would take place at the miner level not the pool level just to prevent the 51?
The unknown player is just that a pool named "unknown"... And they are now laughing at us.
Joke aside didnt the protcol been changed so validations would take place at the miner level not the pool level just to prevent the 51?
Lisa: I don't know. Maybe they're all reverse vampires and they have to get home before dark.
Everyone: Aah! Reverse vampires! Reverse vampires!
Bart: So finally, we're all in agreement about what's going on with the adults. Milhouse?
Milhouse: Ahem. OK, here's what we've got: the Rand Corporation, in conjunction with the saucer people --
Bart: Thank you.
Milhouse: under the supervision of the reverse vampires --
Lisa: [sighs]
Milhouse: are forcing our parents to go to bed early in a fiendish plot to eliminate the meal of dinner.
WE'RE THROUGH THE LOOKING GLASS HERE, PEOPLE...
It may be the Chinese government. You think they can keep their hands off all those Chinese manufactured chips?
They are looking for any alternatives to the USD they can find. May explain why they are permitting all those positive news stories about bitcoin in China...
They are looking for any alternatives to the USD they can find. May explain why they are permitting all those positive news stories about bitcoin in China...
MysteryMiner 2.0 obviously.
oh look it's the "mystery miner" thread again.
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