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Author Topic: [1500 TH] p2pool: Decentralized, DoS-resistant, Hop-Proof pool  (Read 2578744 times)
organofcorti
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August 10, 2012, 11:00:55 PM
 #3181

1250 Spartan6 FPGA, I was on P2Pool since January, I had to leave it (sadly) because of Pyramining's members pressure (at that time there was a very low BTC generation compared to expectations). Since I like p2pool concept, I decided to give it another chance. Let's see if it's working better now! :-)
Are you setting a higher share difficulty for your workers? You could probably get away with 20,000-25,000 difficulty shares no problem.

You should increase difficulty with the square root of the increase in hashrate.

At 20000 difficulty, a 120 Ghps miner would see a daily standard deviation in daily reward of 10% of the mean, and the 95% confidence interval would be about +/- 18%.

At 1300 difficulty, the standard deviation in daily pay is 3% of the mean and the 95% CI is about +/- 5% of mean.

Just something to keep in mind as you add hashrate to your own setups - don't select a linear change in difficulty when you add hashrate to your set up.

Question to p2Pool miners - how many shares per day or per 10 seconds seems to be best? If you submit to large a number, how much does DOA and stale increase by?

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kano
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August 11, 2012, 12:38:19 AM
 #3182

The share chain should tell you that ...
I'm not sure how it could. I don't think you can look up shares based on an address.
Well ... since you actually generate the coinbase transaction yourself (the whole p2 part of p2pool)
Your p2pool must know which shares belong to which address ...
But since I'm only saying that based on what must be the case, I'll go check the 'docs' now ...

https://en.bitcoin.it/wiki/P2Pool_code_documentation
share_data_type
pubkey_hash    Int(160)    pubkey hash of Bitcoin address that this share's payouts will go to

Of course I have no idea how difficult it would be to collate and follow the information to actually work it out, but the rest of the information must be there somewhere Smiley
(the 'must' is based on that fact that you can't cheat the difficulty, so it must be part of the share that is hashed)

Pool: https://kano.is Here on Bitcointalk: Forum BTC: 1KanoPb8cKYqNrswjaA8cRDk4FAS9eDMLU
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August 11, 2012, 04:56:30 AM
 #3183

1250 Spartan6 FPGA, I was on P2Pool since January, I had to leave it (sadly) because of Pyramining's members pressure (at that time there was a very low BTC generation compared to expectations). Since I like p2pool concept, I decided to give it another chance. Let's see if it's working better now! :-)
Are you setting a higher share difficulty for your workers? You could probably get away with 20,000-25,000 difficulty shares no problem.

You should increase difficulty with the square root of the increase in hashrate.

At 20000 difficulty, a 120 Ghps miner would see a daily standard deviation in daily reward of 10% of the mean, and the 95% confidence interval would be about +/- 18%.

At 1300 difficulty, the standard deviation in daily pay is 3% of the mean and the 95% CI is about +/- 5% of mean.

Just something to keep in mind as you add hashrate to your own setups - don't select a linear change in difficulty when you add hashrate to your set up.

Question to p2Pool miners - how many shares per day or per 10 seconds seems to be best? If you submit to large a number, how much does DOA and stale increase by?

I can't increase difficulty in phoenix.  If someone wants to point somewhere in the code that I can change to make my shares more difficult, I would do so

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August 11, 2012, 05:15:16 AM
 #3184

Someone, or a bunch of someones, threw on a bunch of hash power.  We're at the highest we've been in ages.. 443g/h atm.

Now if we can just get by this 30 hour block.  I'm curious if the extra power will help or if we still have scaling issues.

M

That someone it's me, with 120GH/s, and I have 120GH/s more to add, if everythings works well.


Nice!  What type of setup do you have?   And why'd you leave whatever you were in before?  Just curious..

M

or pull it on my node... ist always running the actual version....


http://p2pool-cologne.dyndns.org:9332

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or mine!  5.9.24.81:9332, to make me some altcoins.... my coinbase is higher 98% of the time also, due to having bitcoind with close to 1000 connections!1

actually, i dont even know if it works properly for other ppl, it might just always credit my address with any shares.  does using the -a flag do that?

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August 11, 2012, 05:22:19 AM
 #3185

or mine!  5.9.24.81:9332, to make me some altcoins.... my coinbase is higher 98% of the time also, due to having bitcoind with close to 1000 connections!1

actually, i dont even know if it works properly for other ppl, it might just always credit my address with any shares.  does using the -a flag do that?

As long as the people connecting to your node use their address as their username, the coins get paid to that address.

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August 11, 2012, 06:27:52 AM
 #3186

1250 Spartan6 FPGA, I was on P2Pool since January, I had to leave it (sadly) because of Pyramining's members pressure (at that time there was a very low BTC generation compared to expectations). Since I like p2pool concept, I decided to give it another chance. Let's see if it's working better now! :-)
Are you setting a higher share difficulty for your workers? You could probably get away with 20,000-25,000 difficulty shares no problem.
It is any sense to set it so high? IMO it should be just under pool diff shares ~500 tops.

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August 11, 2012, 06:58:24 AM
 #3187

1250 Spartan6 FPGA, I was on P2Pool since January, I had to leave it (sadly) because of Pyramining's members pressure (at that time there was a very low BTC generation compared to expectations). Since I like p2pool concept, I decided to give it another chance. Let's see if it's working better now! :-)
Are you setting a higher share difficulty for your workers? You could probably get away with 20,000-25,000 difficulty shares no problem.
It is any sense to set it so high? IMO it should be just under pool diff shares ~500 tops.
The purpose is to take up less of the actual share slots, so smaller miners can still get into the chain.

Payouts are determined by how many shares you have, and their difficulty, so if you're submitting fewer shares, but at a higher difficulty, it will balance out and you'll still get your appropriate payout, while smaller miners don't get shut out of the chain altogether from the large miner, taking up so many slots at lower difficulty, to make up his same payout.

-- Smoov
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August 11, 2012, 07:00:16 AM
 #3188

It is any sense to set it so high? IMO it should be just under pool diff shares ~500 tops.
You can't set the difficulty lower than the normal pool difficulty and it wouldn't make sense if he did.

The purpose is to take up less of the actual share slots, so smaller miners can still get into the chain.

Payouts are determined by how many shares you have, and their difficulty, so if you're submitting fewer shares, but at a higher difficulty, it will balance out and you'll still get your appropriate payout, while smaller miners don't get shut out of the chain altogether from the large miner, taking up so many slots at lower difficulty, to make up his same payout.

-- Smoov
Basically, this.

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tiberiandusk
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August 11, 2012, 07:00:29 AM
 #3189

Any word on if Namecoin merged mining will ever be pooled like BTC?

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August 11, 2012, 07:46:45 AM
 #3190

@pyramining:
It's really good to hear!
I am sure that your decision will attract more people to p2pool, and, to your own business as well.
I hope that everything will be fine  Wink

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August 11, 2012, 09:38:54 AM
 #3191

Any word on if Namecoin merged mining will ever be pooled like BTC?

doubt that, not worth worrying about anyway as nmc's keep dropping in price relative to btc.
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August 11, 2012, 10:41:31 AM
 #3192

Any word on if Namecoin merged mining will ever be pooled like BTC?

doubt that, not worth worrying about anyway as nmc's keep dropping in price relative to btc.
and when you figure in NMC's current diff relative to BTC, the drop is even more significant about NMC's future...

-- Smoov
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August 11, 2012, 11:27:56 AM
 #3193

Any word on if Namecoin merged mining will ever be pooled like BTC?

doubt that, not worth worrying about anyway as nmc's keep dropping in price relative to btc.
and when you figure in NMC's current diff relative to BTC, the drop is even more significant about NMC's future...

-- Smoov

... also ... NMC are free - why would anyone expect them to have any value?

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August 11, 2012, 12:10:34 PM
 #3194

Any word on if Namecoin merged mining will ever be pooled like BTC?

doubt that, not worth worrying about anyway as nmc's keep dropping in price relative to btc.
and when you figure in NMC's current diff relative to BTC, the drop is even more significant about NMC's future...

-- Smoov

... also ... NMC are free - why would anyone expect them to have any value?

They seem to have more value than the other crypto currencies...

M

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August 11, 2012, 10:59:10 PM
 #3195

I haven't checked to see if the new BFL ASIC hardware will be p2pool compatible.  I thought I saw that somewhere it is. 

If it is, is p2pool prepared to handle that type of horsepower?  If things turn out well, I personally expect to get 80g/h of power, and I'm certain I'm on the low end, just like I am now with 5 g/h of power.  As I posted in the ozcoin thread, those pools that can't handle the massive increase in hash power are going to die fast.

M


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August 11, 2012, 11:12:43 PM
 #3196

I haven't checked to see if the new BFL ASIC hardware will be p2pool compatible.  I thought I saw that somewhere it is. 

If it is, is p2pool prepared to handle that type of horsepower?  If things turn out well, I personally expect to get 80g/h of power, and I'm certain I'm on the low end, just like I am now with 5 g/h of power.  As I posted in the ozcoin thread, those pools that can't handle the massive increase in hash power are going to die fast.

M



p2pool will likely need to be forked to have a chance to handle ASICs.  The p2pool adjusted difficulty will cause too much variance for anybody not using an ASIC.  One fork for people using ASICs, one for GPUs would be the easiest solution I can think of.  You can't count on every ASIC user to play nice and elect to use a higher difficulty.

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August 11, 2012, 11:14:31 PM
 #3197

I haven't checked to see if the new BFL ASIC hardware will be p2pool compatible.  I thought I saw that somewhere it is. 

If it is, is p2pool prepared to handle that type of horsepower?  If things turn out well, I personally expect to get 80g/h of power, and I'm certain I'm on the low end, just like I am now with 5 g/h of power.  As I posted in the ozcoin thread, those pools that can't handle the massive increase in hash power are going to die fast.

M
As far as server load goes, there's no concern; p2pool has no central server. The only problem will be the rapidly increasing difficulty (which is already getting painful at 800-900). I've only found 4 shares over the past 24 hours with my 580 MH/s.

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August 11, 2012, 11:26:20 PM
 #3198

I haven't checked to see if the new BFL ASIC hardware will be p2pool compatible.  I thought I saw that somewhere it is. 

If it is, is p2pool prepared to handle that type of horsepower?  If things turn out well, I personally expect to get 80g/h of power, and I'm certain I'm on the low end, just like I am now with 5 g/h of power.  As I posted in the ozcoin thread, those pools that can't handle the massive increase in hash power are going to die fast.

M
As far as server load goes, there's no concern; p2pool has no central server. The only problem will be the rapidly increasing difficulty (which is already getting painful at 800-900). I've only found 4 shares over the past 24 hours with my 580 MH/s.

Didn't we have scaling issues before? 

M

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ChanceCoats123
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August 12, 2012, 12:11:00 AM
 #3199

I haven't checked to see if the new BFL ASIC hardware will be p2pool compatible.  I thought I saw that somewhere it is. 

If it is, is p2pool prepared to handle that type of horsepower?  If things turn out well, I personally expect to get 80g/h of power, and I'm certain I'm on the low end, just like I am now with 5 g/h of power.  As I posted in the ozcoin thread, those pools that can't handle the massive increase in hash power are going to die fast.

M
As far as server load goes, there's no concern; p2pool has no central server. The only problem will be the rapidly increasing difficulty (which is already getting painful at 800-900). I've only found 4 shares over the past 24 hours with my 580 MH/s.

Didn't we have scaling issues before? 

M

I was going to say, it seems like we are again. Browsing the p2pool.info logs, this is the worst string of long blocks in basically a month, and it happened right as the pool started getting more hashes. We were getting over 300ghash more and more often and now we're over 425 with ease.
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August 12, 2012, 12:32:34 AM
 #3200

Didn't we have scaling issues before? 

M

I was going to say, it seems like we are again. Browsing the p2pool.info logs, this is the worst string of long blocks in basically a month, and it happened right as the pool started getting more hashes. We were getting over 300ghash more and more often and now we're over 425 with ease.

I'm hoping that's not the case and we're just in the bad run. 

But if we drop below 95% according to the stats, I'm going back to ozcoin. Sad

M

I mine at Kano's Pool because it pays the best and is completely transparent!  Come join me!
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