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Topic: Should Bitcoin fear Army's new 50 petaflops supercomputer? (Read 4786 times)

legendary
Activity: 1834
Merit: 1094
Learning the troll avoidance button :)
Petaflops are totally useless for mining  Grin

It might be better at scrypt mining.  It could even possibly do a 51% attack on all of the scrypt coin chains.  

Lol that

We mine more than the top 500 supercomputers on bitcoin could Smiley
http://qz.com/84056/the-bitcoin-network-is-now-more-powerful-than-the-top-500-supercomputers-combined/
legendary
Activity: 2142
Merit: 1010
Newbie
Should Bitcoin fear the Army's new computer?

BITCOIN DOES NOT GIVE A SHIT.


Blissful ignorance...
member
Activity: 66
Merit: 10
Should Bitcoin fear the Army's new computer?

BITCOIN DOES NOT GIVE A SHIT.
legendary
Activity: 3598
Merit: 2386
Viva Ut Vivas
The IBM technology is software based, not hardware based. It decentralizes the computations at a software program level so that you can run the program spread out over many machines. This works really well for feeding data through it in real time and not having any bottle necks. I used to work for IBM and took a class on how to use their Watson technology.

As for mining, saying that this is something to worry about would be like saying that we should worry about them using 100-1000 computers using CPUs to do a 51% attack.

But when I took the class they mentioned that they were able to feed all of the data of the Internet through the thing in 2 weeks. They tried to see how much data could break it in a simulation and their data producing engines could not create data fast enough to overwhelm it.
hero member
Activity: 727
Merit: 500
Minimum Effort/Maximum effect
This is a data center for the NSA, they focus on encrypting and decrypting data... I bet you those data centers are full of Purpose built ASIC SHA2-3 AES etc encryption chips.
legendary
Activity: 1386
Merit: 1004
Petaflops are totally useless for mining  Grin

It might be better at scrypt mining.  It could even possibly do a 51% attack on all of the scrypt coin chains. 
full member
Activity: 154
Merit: 100
If petaflops were the only thing determining hashing speed - which I don't think it is because SHA relies more on integer operations than floating point ones - looking at this

http://en.wikipedia.org/wiki/Radeon_HD_7000_Series

there is a column called GFLOPS - i guess gigaflops and the 7950 has 2867 gigaflops or .002867 petaflops.

so 50 petaflops = 17440 AMD 7950s = 17440 x 600 MH/s = 10.5 TerraHashes per second

I think this matters;
Quote
Usage of RISC SIMD instructions for GPGPU

Bloomberg etc use Tesla for number-crunching. I would be more worried about them.

Quote
Tesla K20X Peak single precision floating point performance 3.95 Tflops
(50 petaFLOPS)/(3.950 teraFLOPS) = 12,600 @ $13,000 = $163million

Quote
Assume BGQ rack is $2-3 M range and performance of 50 GFlops/node
http://www.usqcd.org/meetings/allHands2012/slides/Mawhinney.pdf

So the CUDA version is quite a bit more expensive, but probably works 163x better.
full member
Activity: 126
Merit: 100
If petaflops were the only thing determining hashing speed - which I don't think it is because SHA relies more on integer operations than floating point ones - looking at this

http://en.wikipedia.org/wiki/Radeon_HD_7000_Series

there is a column called GFLOPS - i guess gigaflops and the 7950 has 2867 gigaflops or .002867 petaflops.

so 50 petaflops = 17440 AMD 7950s = 17440 x 600 MH/s = 10.5 TerraHashes per second
legendary
Activity: 1372
Merit: 1003
Wonder what's the power consumption of that beastie and if all that powers being used for ecologically sound purposes Wink

The army is concerned with killing people more efficiently.

I think winning wars comes above that.  Example the game theory of mathematicians like John Nash during the cold war.
member
Activity: 104
Merit: 35
Wonder what's the power consumption of that beastie and if all that powers being used for ecologically sound purposes Wink

The army is concerned with killing people more efficiently.
full member
Activity: 154
Merit: 100
How many 79xx does it have?  Cool
hero member
Activity: 952
Merit: 1009
Wonder what's the power consumption of that beastie and if all that powers being used for ecologically sound purposes Wink

Like producing bitcoin?
legendary
Activity: 1400
Merit: 1013
Maybe if it was a 50 exaflop supercomputer.
legendary
Activity: 3066
Merit: 1147
The revolution will be monetized!
pof
full member
Activity: 204
Merit: 100
http://bitcoincharts.com/bitcoin/

The total network hashrate in petaflop is 1719.  Shocked
legendary
Activity: 2142
Merit: 1010
Newbie
Petaflops are totally useless for mining  Grin

I wouldn't say totally...
How many floating operations are required for sha hashing?

No idea. Why?

EDIT: I googled and found that u need only 3 floating-point operations for SHA-256 hashing - https://blogs.oracle.com/DanX/entry/sparc_t4_digest_and_crypto.
legendary
Activity: 1148
Merit: 1008
If you want to walk on water, get out of the boat
Petaflops are totally useless for mining  Grin

I wouldn't say totally...
How many floating operations are required for sha hashing?
full member
Activity: 229
Merit: 100
If the US government wants to attack to bitcoin has lot ways to do it efficiently.
legendary
Activity: 2142
Merit: 1010
Newbie
Petaflops are totally useless for mining  Grin

I wouldn't say totally...
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