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Author Topic: Bitcoin network hashrate is 35 times higher than top 500 supercomputers  (Read 3862 times)
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September 04, 2013, 07:24:46 AM
 #1

Bitcoin network hashrate
7926.83 PetaFLOPS
(http://bitcoincharts.com/bitcoin/)

Top 500 supercomputers
223.54 PetaFLOPS
(http://www.top500.org/statistics/perfdevel/)


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September 04, 2013, 07:26:38 AM
 #2

Bitcoin network hashrate
7926.83 PetaFLOPS
(http://bitcoincharts.com/bitcoin/)


Top 500 supercomputers
33.86 PetaFLOPS
(http://www.top500.org/statistics/perfdevel/)



according to that site its 671.025 Thash/s? or am I looking in the wrong place?
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September 04, 2013, 07:09:44 PM
 #3

Always beware that these figures are FLOP equivalent, and not actual FLOP measurement. SHA-2 uses integer mathematics, there are no floating point operations, and hence, no FLOPS measurable directly.

Vires in numeris
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September 04, 2013, 08:07:15 PM
 #4

Completely meaningless statistic.

Bitcoin ASIC miners can't even compute a floating point operation so they are not at all comparable to a supercomputer that can be used for many things.

Comparing specialized bitcoin hardware to supercomputers simply can't be done. The bitcoin network is faster at performing SHA256 hashes, but thats it.
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September 04, 2013, 08:44:20 PM
 #5

Completely meaningless statistic.

Bitcoin ASIC miners can't even compute a floating point operation so they are not at all comparable to a supercomputer that can be used for many things.

Comparing specialized bitcoin hardware to supercomputers simply can't be done. The bitcoin network is faster at performing SHA256 hashes, but thats it.

Assuming the supercomputers also are quite capable of integer arithmetic, it would be interesting to have an estimate of the mining hashpower such machines have.
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September 04, 2013, 08:49:05 PM
 #6

Completely meaningless statistic.

Bitcoin ASIC miners can't even compute a floating point operation so they are not at all comparable to a supercomputer that can be used for many things.

Comparing specialized bitcoin hardware to supercomputers simply can't be done. The bitcoin network is faster at performing SHA256 hashes, but thats it.

Assuming the supercomputers also are quite capable of integer arithmetic, it would be interesting to have an estimate of the mining hashpower such machines have.

Usually they aren't very good at integer math.  Most calculations use floating point.  Unfortunately, most of the important constants in science are not integers (pi, e, phi, etc) and rarely are the things you want to measure integer length.

https://www.bitcoin.org/bitcoin.pdf
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September 04, 2013, 11:29:35 PM
 #7

Apples vs pears

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September 05, 2013, 10:54:24 AM
 #8

does this not at least say it's not possible anymore to get the 51% for the malicious banks and governments? Or am i missing sth here?
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September 05, 2013, 10:56:38 AM
 #9

Also why top 500 and not every single supercomputer combined?



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Pokerfan
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September 05, 2013, 11:01:01 AM
 #10

This is of course a bad comparison because bitcoin hashing hardware is specialized and supercomputers are not.

If governments wanted to attack bitcoin, they would develop custom ASICs.
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