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Showing 20 of 74 results by bitcoinbearhk
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Re: Educate me about p2pool please!
by
bitcoinbearhk
on 26/08/2014, 14:26:44 UTC

Nearly 16 hours to find a share.

When I first started mining on p2pool, the share difficulty was barely in the hundred thousands.  Now I've seen it upwards of 15 million.  If you can handle the variance, then you'll be happy on p2pool.  If that kind of variance is too much for you, then p2pool is not for you.

True ... I found mining on p2pool not much better than solo mining ......
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Board Hardware
Re: [ANN] Spondoolies-Tech - carrier grade, data center ready mining rigs
by
bitcoinbearhk
on 26/08/2014, 14:08:26 UTC
I don't see how ROI on the miners can be achieved if the difficulty increases so fast before the miners can even get to us and make any respectable $$$. Looks like our only hope is if the BTC to USD rate goes up and that's not a gamble anyone should be taking with their money, and on the other hand if BTC to USD drops then you can see how the people mining are the ones that are screwed even further here...

Personally I don't believe the cost of the hardware itself is justified, it's too expensive and the hardware manufacturers keep the buyers thinking that at current mining difficulty and rate they will get their money back in 3 months, but that is not true.

When I purchased the miners in July 24 or so the difficulty was about 17.34G at a BTC to USD rate of $650 expecting to get a decent return, now I still don't have my miners and I have to wait another 1 month, have spent $125,900 USD to Spondoolies, difficulty is now at 23.84G at a BTC to USD rate of $500. By the time I get my miners up and working the difficulty will be about 30.00G if not more and even if the rate stays at $500 I'm basically still screwed because the miners will probably not make their money back before they out live their useful life.

Everyone better think well and hard before buying mining equipment on pre-order with 2 months waiting time, never again. I hope I can get my money back by running my 29 x SP30 miners until they end up in the bin by January or February 2015...

Mining Hardware producers like Spondoolies and the rest are pretty much safe. We are the ones worried about getting our money back while they sell us expensive hardware on pre-order.

29 x SP30??  You sure you have the power supply and ventilation to handle that?
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Board Pools
Re: [600 TH] p2pool: Decentralized, DoS-resistant, Hop-Proof pool
by
bitcoinbearhk
on 24/08/2014, 01:41:27 UTC
Just a thought after mining for some time on p2pool...

it takes 30 seconds to get a share across the p2pool network, so it's roughly 20 times faster than the block finding speed ....

but is 30 seconds enough ? ......

It is getting so hard now to get a share even when we are only at 2~3 PH/s , what would it be like if we get up to 20PH/s (i.e. like 10% network share only) ...... it would take people days to even get 1 share.

Now we are back to the problem with solo mining, high variance and no payout for many of the days for the regular small miners.


Should we be developing some like a p2pool 2.0, with share speed much reduced to like 1 second or something like what other pool does, each "share" on the machine is just a share, and divide it smaller Huh
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Re: [600 TH] p2pool: Decentralized, DoS-resistant, Hop-Proof pool
by
bitcoinbearhk
on 23/08/2014, 04:37:31 UTC
cool thanks , i was thinking about learning python as a start as well!!! I will take your advice seriously  Wink
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Board Pools
Re: [600 TH] p2pool: Decentralized, DoS-resistant, Hop-Proof pool
by
bitcoinbearhk
on 23/08/2014, 02:02:24 UTC
Can somebody see what I could possibly be doing wrong with my pool?

http://64.132.73.186:9332/static/

My hasrate is about 450GH/s

My a week ago I rebooted my pool and added a local 350Gh/s BF rig.
For the first 24/hr I got 3 dead shares.
So I rebooted the PC and it started working fine.
As you can see from the payout of the pool I was getting .009xxx a block.
Then the payout switched to just under .004xxx with no noticeable pool hashrate increase.
Now I noticed: "Payout if a block were found NOW: 0 BTC" and my last 2 blocks were dead also.

My config is running on a Windows 2008 R2 server that is on a private fiber line.
I setup pool based on the http://p2pool.in/ information.

What could I be missing?

Thanks

Hello looks fine to me.
If I am not mistaken, its giving you a payout for the next 24 hours and nothing now because you have not earned enough in your shares yet.....
You need to have a full 3 days to get to your full potential, this is how the p2pool works... you earn for your shares and since you just started you are at a point of nothing, but if you leave it you will see it it go up...
Others on here can explain it better to you but I do think thats the reason.....
hope that helps... Just watch it and you will see...
Also, if you stop your node, and we pop a few more blocks you will continue to get paid for the shares you earned...



OK so the "3 days" logic comes from this:

[source: https://en.bitcoin.it/wiki/P2Pool]
-------------------------------------------------------------------------------------------------
Payout logic

Each share contains a generation transaction that pays to the previous n shares, where n is the number of shares whose total work is equal to 3 times the average work required to solve a block, or 8640 (= 24 hours of shares), whichever is smaller. Payouts are weighted based on the amount of work each share took to solve, which is proportional to the p2pool difficulty at that time.

The block reward (currently 25BTC) and the transaction fees are combined and apportioned according to these rules:

A subsidy of 0.5% is sent to the node that solved the block in order to discourage not sharing solutions that qualify as a block. (A miner with the aim to harm others could withhold the block, thereby preventing anybody from getting paid. He can NOT redirect the payout to himself.) The remaining 99.5% is distributed evenly to miners based on work done recently.

In the event that a share qualifies as a block, this generation transaction is exposed to the Bitcoin network and takes effect, transferring each node its payout.
-------------------------------------------------------------------------------------------------

First of all, should 8640 shares = 3 days of shares instead??? is there something wrong with the Wiki???

With this amendment, I would translate the logic as follows in common language:

Whenever a block is found on p2pool, payout will be proportionally distributed to:
- shares generated during the past n hours, where n hours is the expected time to generate 3 blocks (i.e. if expected time to generate 1 block is 12 hours, n = 36 hours = 1.5 days)
- however the maximum value for n is 3 days, meaning if a share is over 3 days old, it's basically too old to generate any income Smiley

Is my understanding correct???

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Re: [600 TH] p2pool: Decentralized, DoS-resistant, Hop-Proof pool
by
bitcoinbearhk
on 23/08/2014, 01:49:12 UTC
Unfortunately I am a civil engineer , but not computer engineer ... I am very limited in regard to computing and coding ... I would say, at the "common user" level.


I am a fast learner though.  Can someone point me to the right direction or provide me a list of stuffs starting from scratch that I need to learn if I would wish to contribute to re-coding the p2pool software?


How do coders come to be? 

As mean as it sounds, there is no "I've no experience in coding but I'm a fast learner, I'll help you recode this complicated software" in Computer Science.

That's like saying "I love what this composer did, I would like to compose a reinterpretation of his work. I have never composed music but I'm a fast learner".

Don't get me wrong, I'm not saying you can't teach yourself programming. I am just saying you will very likely not get far enough without formal education, or starting at a very early age.

Thanks for the advice  Wink

I understand what I was saying was bold. I know I will not be able to contribute much in the short term, but I am really interested and considering to take formal education on this direction, either part-time school, or buying books for self education.

I have 2 bachelor and 1 master degrees, in civil engineering and law (I know it's totally unrelated to computer ...) and am currently having enough rest to start another line of study ~~~ I have recently completed a short 40 hour course on webpage design, and have some basic idea of HTML5 and CSS3 ....

So ... for all those learnt coders out there, may I ask in what direction should I head to from scratch, if I wish to learn all about coding Huh Do I need something like BEng(Computer) Huh or are there easier stuffs like diploma or self educating books that I can read to acquire the skill??  Continuous learning is just my hobby  Cool
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Re: [600 TH] p2pool: Decentralized, DoS-resistant, Hop-Proof pool
by
bitcoinbearhk
on 22/08/2014, 13:02:50 UTC
Unfortunately I am a civil engineer , but not computer engineer ... I am very limited in regard to computing and coding ... I would say, at the "common user" level.


I am a fast learner though.  Can someone point me to the right direction or provide me a list of stuffs starting from scratch that I need to learn if I would wish to contribute to re-coding the p2pool software?


How do coders come to be? 
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Board Pools
Re: [600 TH] p2pool: Decentralized, DoS-resistant, Hop-Proof pool
by
bitcoinbearhk
on 22/08/2014, 12:59:44 UTC
I received some 0.00028 BTC this morning in my P2Pool wallet ... not newly generated coins ... wondering did any one else on p2pool also receive that and what for?
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Re: [600 TH] p2pool: Decentralized, DoS-resistant, Hop-Proof pool
by
bitcoinbearhk
on 21/08/2014, 14:28:45 UTC
My GetBlockTemplate Latency is about 0.35 second ... is that kinda slow?

Damnit got 6 shares , 3 were orphaned ....................... I am wondering ...
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Board Pools
Re: [600 TH] p2pool: Decentralized, DoS-resistant, Hop-Proof pool
by
bitcoinbearhk
on 21/08/2014, 10:19:06 UTC
i've read from wiki that payment is to last n shares where n is the smaller of :
1. 3x the work needed to generate a block;
2. some 8640 shares (3 days)??

which ever is smaller......

so in practice each share can only live for something like 1.5 days only right Huh can someone explain how situation 1 above works??? how did the system determins the average works needed to generate 3 blocks??? actual or predicted???
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Re: [600 TH] p2pool: Decentralized, DoS-resistant, Hop-Proof pool
by
bitcoinbearhk
on 21/08/2014, 10:06:46 UTC
As for the development of p2pool, what version should we use??? i have downloaded the versikn 13.4 from source, but i see some public nodes use strange versions.
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Board Pools
Re: [600 TH] p2pool: Decentralized, DoS-resistant, Hop-Proof pool
by
bitcoinbearhk
on 21/08/2014, 06:14:25 UTC
Not so lucky with the 5Th/s (12 Ant S3s) setting ......

Mined around 15 hours after I restarted the node ... 6 shares (2 ophened ...)  Furthermore, 2 of the "good share" appeared to be mined by my Cointerras when they hop between the pools during fail-over...

So ... I am experiencing similar problem, where the Ants are not getting in shares as they should be .... it's like 3 times less effective than it should be.....

I have temporary shut my node down, and mine with Discuss Fish for the time being, before I get off work and carry out further trials tonight.



BTW, I set the followings
(i) --give-author 0 -a [a remote payout address]
(ii) Ants mining using separate names (e.g. Ant1, Ant2, Ant3 ... Ant12)
(iii) the node and the miners are in 2 separate physical location, but not too far away (20 min ride distance)

Will these seriously affect the mining performance?  I know (iii) will hurt a bit, but how about (i) and (ii) ?
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Re: [600 TH] p2pool: Decentralized, DoS-resistant, Hop-Proof pool
by
bitcoinbearhk
on 20/08/2014, 12:57:05 UTC
I have got a lot of this message on my node:

Punishing share for "Block-stale detected .......

Does this mean anything bad?
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Board Pools
Re: [600 TH] p2pool: Decentralized, DoS-resistant, Hop-Proof pool
by
bitcoinbearhk
on 20/08/2014, 12:12:45 UTC
Noticed that the hash rate on P2Pool dropped significantly after the very lucky 4 blocks for today.  Wonder if this is some kind of "unlucky avoidance" tactics?  Roll Eyes
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Board Hardware
Re: ebay chargebacks
by
bitcoinbearhk
on 20/08/2014, 03:05:49 UTC
I sold 11 butterfly labs...

10 OK no problem
1 (and the highest priced one) ... buyer first asked for tracking, then after I provided tracking, he claimed broken ware....

and of course when he returned the machine, it was broken ... apparently intentionally, with screws unscrewed and shit ....



So I would say, you will have a 10% chance of selling to a scammer .....
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Re: [600 TH] p2pool: Decentralized, DoS-resistant, Hop-Proof pool
by
bitcoinbearhk
on 20/08/2014, 02:12:37 UTC
That's tough to take, but probably bad luck. What are your node stats? I have nothing close to your HR, but I have gone two days @ 1.1 TH/s without a share recently. Bad luck and then from the 16th to 17th did 8-9 days of mining on P2pool. The best day. It made up for it all.
You running on windows on linux?
Got any screen output? Any P2Pool errors?

I have been having some Bitcoind crashing issues lately. I'm trying to work on those now. Pretty sure it's memory related. I hope.


Mining for 13 hours at 5.2TH/s, expected time to share 2.0hrs....

Actual share obtained so far:  1 total (1 ophaned, 0 good) ......


Pure bad luck or setup issue???  Huh

Seriously, should have got 6 shares under the "expected" scenario.

P2Pool BTC

Graphs

Version: 13.4

Pool rate: 2.00PH/s (12% DOA+orphan) Share difficulty: 8820000

Node uptime: 13.5 hours Peers: 6 out, 0 in

Local rate: 5.31TH/s (1.2% DOA) Expected time to share: 2.0 hours

Shares: 1 total (1 orphaned, 0 dead) Efficiency: 0.000%

Payout if a block were found NOW: 0.00823785 BTC to xxxxxxxxxxxxxxxxxxxx. Expected after mining for 24 hours: 0.0665 BTC per block.

Current block value: 25.05109951 BTC Expected time to block: 14.2 hours

 Cry
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Re: [600 TH] p2pool: Decentralized, DoS-resistant, Hop-Proof pool
by
bitcoinbearhk
on 20/08/2014, 01:49:06 UTC
Mining for 13 hours at 5.2TH/s, expected time to share 2.0hrs....

Actual share obtained so far:  1 total (1 ophaned, 0 good) ......


Pure bad luck or setup issue???  Huh

Seriously, should have got 6 shares under the "expected" scenario.
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Re: [600 TH] p2pool: Decentralized, DoS-resistant, Hop-Proof pool
by
bitcoinbearhk
on 19/08/2014, 19:39:24 UTC
Cool thanks guys.

Is 1.7% DOA a reasonable number?  wondering if I should take step to improve it or just keep it as is.
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Re: [600 TH] p2pool: Decentralized, DoS-resistant, Hop-Proof pool
by
bitcoinbearhk
on 19/08/2014, 13:52:53 UTC
OK so I have given up using my Terraminer IV for p2pool ... it's just 20% less effective due to unknown reason.

I have pointed my Antminer S3s to my node, no problem, hashing good... Perhaps I will just stick with S3 with p2pool, and Cointerra with traditional pools.


Now I wish to setup merge mining.  Can someone please point me to any guide for Namecoin merge mining setup for Windows 7???  Thanks.
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Re: [600 TH] p2pool: Decentralized, DoS-resistant, Hop-Proof pool
by
bitcoinbearhk
on 19/08/2014, 06:06:28 UTC
...

Read... So, it would seems to me that a 10~20% decrease in efficiency for large miners such as Cointerra and S2 is a known issue and unresolved .....  Cry

Not sure if I should stay in P2Pool with my Cointerra gears in this case .... sad  Cry

While the issue with the S2 has been well documented here, you are the first case of a problem with Cointerra gear I have seen.

Cointerra is specifically listed in the wiki as working well.

https://en.bitcoin.it/wiki/P2Pool#Interoperability_table

I would also like to hear from other Cointerra miners on p2pool.


i have setup my own node on Windows 7, and mining for over a day.

hash show up on cointerra is a constant 1350 GHs instead of the normal 1600 GHs... checked not heat problem, can resume 1600 with regular pools......

desperate to find a solution.


I saw this on wiki:

Requirement:
    Windows:
        Install Python 2.7: http://www.python.org/getit/
        Install Twisted: http://twistedmatrix.com/trac/wiki/Downloads
        Install Zope.Interface: http://pypi.python.org/pypi/zope.interface/3.8.0
            Unzip the files into C:\Python27\Lib\site-packages

Well I have not installed the Python 2.7, Twisted and Zope.  Will that be a problem resulting in my Cointerra's under performance???