[XPM] [ANN] Primecoin Release - First Scientific Computing Cryptocurrency - page 106.

Vannicke

member

Activity: 95

Merit: 10

That guy, you know, with the face

Quote from: LazyOtto on July 13, 2013, 05:30:37 PM

Quote from: teknohog on July 13, 2013, 05:23:51 PM

is the expansion of collective knowledge enough?

No.

Any number of examples can be given where "expansion of collective knowledge" is a useless endeavor of no arguable benefit to either the individual nor mankind as a whole.

Please play again.

I.e., narrow the scope of your statement sufficiently and I might even agree with you. Wink

Finding sufficiently large prime cunningham chains can be directly used in security to make effectively impossible to brute force encryption happen, until someone figures out a way to find prime factors of gargantuan numbers easily, finding larger primes means the ability to make more secure and robust encryption under the current popular encryption schema.

mikaelh

sr. member

Activity: 301

Merit: 250

I have released my optimized version of the Primecoin client:
https://bitcointalksearch.org/topic/xpm-ann-primecoin-high-performance-hp14-released-255782

sevenseals

full member

Activity: 167

Merit: 100

does anybody know how to find the total hashrate (primerate)?

hl5460

legendary

Activity: 1621

Merit: 1000

news.8btc.com

Quote from: tacotime on July 13, 2013, 05:11:00 PM

Code:

getdifficulty
7.98816758

Just about to 8. Remember that we're on a wacky logarithmic approximately base-30 scale for difficulty, so difficulty 8 is 30x harder to find a block as compared to difficulty 7.

My i5 failed to spit out anything for +72 hrs. I guess I have to check once a week from now on.

LazyOtto

sr. member

Activity: 476

Merit: 250

Quote from: teknohog on July 13, 2013, 05:23:51 PM

is the expansion of collective knowledge enough?

No.

Any number of examples can be given where "expansion of collective knowledge" is a useless endeavor of no arguable benefit to either the individual nor mankind as a whole.

Please play again.

I.e., narrow the scope of your statement sufficiently and I might even agree with you. Wink

mustyoshi

sr. member

Activity: 287

Merit: 250

Quote from: teknohog on July 13, 2013, 05:23:51 PM

Quote from: cbeast on July 13, 2013, 04:34:00 PM

There are probably an infinite number of primes. Really, how scientifically useful is this endeavor?

There are definitely an infinite number of primes. Given a set of primes, you can easily show that there must be one more prime, and so on.

This project is not about finding new primes, because new ones are too big to verify in any sensible time for a block interval.

What does "scientifically useful" mean, anyway? Is something useful only because it makes money (ahem) or is the expansion of collective knowledge enough?

BTW, if you use encryption such as https, you are using the results of prime number math.

And Bitcoin's private key system is based around primes.

teknohog

sr. member

Activity: 520

Merit: 253

555

Quote from: cbeast on July 13, 2013, 04:34:00 PM

There are probably an infinite number of primes. Really, how scientifically useful is this endeavor?

There are definitely an infinite number of primes. Given a set of primes, you can easily show that there must be one more prime, and so on.

This project is not about finding new primes, because new ones are too big to verify in any sensible time for a block interval.

What does "scientifically useful" mean, anyway? Is something useful only because it makes money (ahem) or is the expansion of collective knowledge enough?

BTW, if you use encryption such as https, you are using the results of prime number math.

Vannicke

member

Activity: 95

Merit: 10

That guy, you know, with the face

Quote from: pgbit on July 13, 2013, 05:13:21 PM

Quote from: LazyOtto on July 13, 2013, 05:08:15 PM

Quote from: paulthetafy on July 13, 2013, 05:04:48 PM

Quote from: maxsolnc on July 13, 2013, 04:58:10 PM

Quote from: 96redformula on July 13, 2013, 04:45:40 PM

Where did all the blocks go Sad

?

Seems like difficulty went up. I have 20 servers, they had near block per hour, and last several hours nothing

+1 this is quite concerning. I have > 100k pps running and not a single block in the last 2 hours just doesn't seem right

With BitCoin, you would have had an assured remainder of 2048 blocks to benefit from the 'arms race' of quickly pumping up compute power above what the average miner could supply.

This seems to be working well as a demonstration of the value of a continuously adjustable difficulty.

Difficulty hasnt changed much I think. It was 7.988 just now, and 7.978 just over 12 hours ago. 1 block is now being mined every few seconds.

It was 7.96 26 hours ago according to my console ... it hasn't taken that much of a jump ... 7.96 to 8 on a log scale is still only about ~~5-10%~~ 15% increase.

Edit: forgot base was around 30, math corrected.

LazyOtto

sr. member

Activity: 476

Merit: 250

Quote from: pgbit on July 13, 2013, 05:13:21 PM

Difficulty hasnt changed much I think. It was 7.988 just now, and 7.978 just over 12 hours ago. 1 block is now being mined every few seconds.

Then one block is still being mined every few seconds. It is just a question of how distributed is the set of people receiving those blocks.

One of my comments on the previous page is relevant.

-- edit

As is the clearly evident attempt at market manipulation in progress on the Vircurex exchange. (I'm not watching the other exchanges, but assume that equivalent games are in progress there, also.)

pgbit

sr. member

Activity: 771

Merit: 258

Trident Protocol | Simple «buy-hold-earn» system!

Quote from: LazyOtto on July 13, 2013, 05:08:15 PM

Quote from: paulthetafy on July 13, 2013, 05:04:48 PM

Quote from: maxsolnc on July 13, 2013, 04:58:10 PM

Quote from: 96redformula on July 13, 2013, 04:45:40 PM

Where did all the blocks go Sad

?

Seems like difficulty went up. I have 20 servers, they had near block per hour, and last several hours nothing

+1 this is quite concerning. I have > 100k pps running and not a single block in the last 2 hours just doesn't seem right

With BitCoin, you would have had an assured remainder of 2048 blocks to benefit from the 'arms race' of quickly pumping up compute power above what the average miner could supply.

This seems to be working well as a demonstration of the value of a continuously adjustable difficulty.

Difficulty hasnt changed much I think. It was 7.988 just now, and 7.978 just over 12 hours ago. 1 block is now being mined every few seconds.

Vannicke

member

Activity: 95

Merit: 10

That guy, you know, with the face

That's very disconcerting ... though in the past four days of mining I haven't seen any primecoin between 5 cpus, when it seems some people have gotten as much as 100 on individual units. I hope nothing broke.

tacotime

legendary

Activity: 1484

Merit: 1005

Code:

getdifficulty
7.98816758

Just about to 8. Remember that we're on a wacky logarithmic approximately base-30 scale for difficulty, so difficulty 8 is 30x harder to find a block as compared to difficulty 7.

LazyOtto

sr. member

Activity: 476

Merit: 250

Quote from: paulthetafy on July 13, 2013, 05:04:48 PM

Quote from: maxsolnc on July 13, 2013, 04:58:10 PM

Quote from: 96redformula on July 13, 2013, 04:45:40 PM

Where did all the blocks go Sad

?

Seems like difficulty went up. I have 20 servers, they had near block per hour, and last several hours nothing

+1 this is quite concerning. I have > 100k pps running and not a single block in the last 2 hours just doesn't seem right

With BitCoin, you would have had an assured remainder of 2048 blocks to benefit from the 'arms race' of quickly pumping up compute power above what the average miner could supply.

This seems to be working well as a demonstration of the value of a continuously adjustable difficulty.

TheSwede75

full member

Activity: 224

Merit: 100

Pretty convinced that GPU/CUDA is the name of the game soon (or already if someone has figured it out). CPU for a single server, even quad Xeon tops out around maybe 8k PPS. Theoretically a single SLI NVidia setup could yield several MILLION PPS without breaking a sweat.

KrLos

hero member

Activity: 768

Merit: 1000

i founded 3 bloks 1 day after release then, i keep mining since 4 days now in two computers and not a single block founded. xD i will try this weekend, if i can't reach atleast 1 block with the two machines, i'm out.

paulthetafy

hero member

Activity: 820

Merit: 1000

Quote from: maxsolnc on July 13, 2013, 04:58:10 PM

Quote from: 96redformula on July 13, 2013, 04:45:40 PM

Where did all the blocks go Sad

?

Seems like difficulty went up. I have 20 servers, they had near block per hour, and last several hours nothing

+1 this is quite concerning. I have > 100k pps running and not a single block in the last 2 hours just doesn't seem right

maxsolnc

sr. member

Activity: 350

Merit: 250

DTC unofficial team

Quote from: 96redformula on July 13, 2013, 04:45:40 PM

Where did all the blocks go Sad

?

Seems like difficulty went up. I have 20 servers, they had near block per hour, and last several hours nothing

96redformula

full member

Activity: 224

Merit: 100

Where did all the blocks go Sad

?

LazyOtto

sr. member

Activity: 476

Merit: 250

Quote from: mustyoshi on July 13, 2013, 04:38:42 PM

Quote from: cbeast on July 13, 2013, 04:34:00 PM

There are probably an infinite number of primes. Really, how scientifically useful is this endeavor?

More than computing SHA256(SHA256(x)) :s

But it was never argued that there was any intrinsic value in generating hashes. That was merely the mechanism chosen due to being computationally expensive and having a mathematically provable output for input.

IMO, the subject line of this thread is just marketing glossy paper BS. primecoin is no more "scientific" than any other numerical computation. (I welcome links to serious papers, not SK's 'Sunday Supplement' level one, which refutes that assertion.)

mustyoshi

sr. member

Activity: 287

Merit: 250

Quote from: cbeast on July 13, 2013, 04:34:00 PM

There are probably an infinite number of primes. Really, how scientifically useful is this endeavor?

More than computing SHA256(SHA256(x)) :s

Topic: [XPM] [ANN] Primecoin Release - First Scientific Computing Cryptocurrency - page 106. (Read 689005 times)