[DEAD] DeepBit.net PPS+Prop,instant payouts, we pay for INVALID BLOCKS too

[dishwara]

I may be late to the party, quick question:  Would it be possible for you to throttle your connections to where if you start to exceed 50% of the total network, it refuses any other workers from connecting?

1) There is no way to know for sure if it's more than 50% or not.
2) Exceeding 50% doesn't hurts my pool or my users, so there is no need for such countermeasures, especially when wast majority of bitcoin community do not care about that.

Until bitcoin developers release solution for 51% attack blaming pools is foolishness.
Already enough times blamed pool owners that pool owners may attack, but its the bitcoin developers who have to give solution, not pool owners.

Instead of every time asking pool owners, whether they will attack or not, or asking what will happen if they attack, better ask bitcoin developers to release solution.
It seems after bitcoin price fell down bitcoin developers showing LESS INTEREST in bitcoin development.

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[Hawkix]

Until bitcoin developers release solution for 51% attack blaming pools is foolishness.
Already enough times blamed pool owners that pool owners may attack, but its the bitcoin developers who have to give solution, not pool owners.

Instead of every time asking pool owners, whether they will attack or not, or asking what will happen if they attack, better ask bitcoin developers to release solution.
It seems after bitcoin price fell down bitcoin developers showing LESS INTEREST in bitcoin development.

What kind of solution to 51% problem do you think of? It may not be possible to solve it at all.

Consolidating the power into single block issuer/signer (which a pool owner is) is bad thing. Its not Tycho fault, though. Personally, I would not feel comfortable in a situation where I own a "rocket missile launch suitcase".

The proper solution is to find out a way how to allow to pool for less variance while leaving the block to sign to individual miners while not allowing the miners to cheat on pool. It has been discussed many times.

[DeathAndTaxes]

I think it would do the CoinNetwork some GOOD, if deepbit At Some Point temporarily controlled >51% of the network hash rate.
WHY?!?!
Because Nothings gonna fucking happen. Why would he fuck himself outta his (est i really dont have a good idea) 3,500/mo paycheck that the pools getting him just to grab some coins!

It would ease peoples minds about the whole "OMG IF IT PASSES 51% WERE ALL FUCKED"
But at the same time, If the fake blocks are made, Well shit. DOWN HILL GOES BITCOINS for a lonnnnnng lonnnnngggg time.

Personally i think we should only have One pool, One nice big 90%nethash pool, Run by all the leaders, Democracy style, Where NO INDIVIDUAL has any power, But as a group can make changes.

You do understand the risk isn't just from malicious action by pool operator but also by someone who subverts the pool.   Granted Bitcoin economy is likely to small to support such cloak and dagger action but if someone could "undo" all VISA transactions in last 24 hours by kidnapping a pool operator (or his/her family) you don't think it would occur to anyone to try?

Hopefully in time technology like p2pool will make this issue obsolete.  You can't subvert p2pool because the miners are smart.  All conventional pool miners are "dumb" and as a result the pool is the weak point.  If the pool starts sending false headers to miners guess what the miners will do.  Happily hash away attempting to solve a block full of massive double spends.

[melted349]

Not to interrupt any current conversation, but I was wondering if Deepbit was considering or planning on mining namecoins anytime soon.  A lot of pools are starting to do merged mining, I would love to see Deepbit do merged mining as I hate using other pools just to get a little NMC too. 

[DeathAndTaxes]

What kind of solution to 51% problem do you think of? It may not be possible to solve it at all.

Consolidating the power into single block issuer/signer (which a pool owner is) is bad thing. Its not Tycho fault, though. Personally, I would not feel comfortable in a situation where I own a "rocket missile launch suitcase".

The proper solution is to find out a way how to allow to pool for less variance while leaving the block to sign to individual miners while not allowing the miners to cheat on pool. It has been discussed many times.

It certainly is possible at least in theory.  Take a concept like p2pool.  Now modify it so it uses conventional pool reward BUT each miner generates their own block header and submits shares to pool.

The block contains pools address in coinbase so there is no method for miners to cheat (except block withholding).
The pool isn't hashing the headers so the pool has no "influence" over miners.
The reward still goes to the pool and thus can bee split by any mechanism the pool wants PPS, Prop, SMPPS, etc thus variance is reduced.

Now how much demand is there for a such a pool and is it worth it for a pool operator to spend the resources building?  Who knows.  On a technical level though there is no reason for the "51% pool control problem to exist".

[btc_artist]

I seem to have Deepbit working with guiminer / poclbm. When I start mining, it works and says 457 khash/s (it varies). The console also occasionaly says " pit.deepbit.net:8332 27/10/2011 11:58:38, long poll: new block 00000730313xxxxx".

So it appears to be mining, but "accepted" and "stale" remain at 0, and in my Deepbit account it says "Workers not connected"

[os2sam]

I seem to have Deepbit working with guiminer / poclbm. When I start mining, it works and says 457 khash/s (it varies). The console also occasionaly says " pit.deepbit.net:8332 27/10/2011 11:58:38, long poll: new block 00000730313xxxxx".

So it appears to be mining, but "accepted" and "stale" remain at 0, and in my Deepbit account it says "Workers not connected"

How long have you been mining?
Sam

[btc_artist]

I seem to have Deepbit working with guiminer / poclbm. When I start mining, it works and says 457 khash/s (it varies). The console also occasionaly says " pit.deepbit.net:8332 27/10/2011 11:58:38, long poll: new block 00000730313xxxxx".

So it appears to be mining, but "accepted" and "stale" remain at 0, and in my Deepbit account it says "Workers not connected"

How long have you been mining?
Sam

20 or 25 minutes.  Does it take a while to update the stats?

[os2sam]

says 457 khash/s (it varies)

Really?!? Kilo Hash/second?  Are you CPU mining with a 80486 or something?  If you are really that slow then it may not be turning in enough work in a timely manner to make it look like your are mining.

I have a low end GPU which gets about 34.5 MHash/s and it will often go for 3 or 4 minutes without turning in a share.  So if you are really mining that slow then it could take 20 or so minutes to find a valid share.  Watch the stats page on deepbit for how many shares your miner gets done.
Sam

[os2sam]

How long have you been mining?
Sam

20 or 25 minutes.  Does it take a while to update the stats?

Deepbit updates the stats very responsively for me.  I see my miner find a share and then update my browser and it will have shown up already on the stats page.  But it can take a few minutes sometimes.  It sounds like you are mining, I would let it go for a couple of hours.

Edit: I meant account page not stats https://deepbit.net/account

Also if you are CPU mining I would use the Ufasoft miner.  I was getting 1.42MHsh/s on a 3.2GHz Pentium 4 which is pretty good for that older CPU.
Sam

[btc_artist]

Really?!? Kilo Hash/second?  Are you CPU mining with a 80486 or something?  If you are really that slow then it may not be turning in enough work in a timely manner to make it look like your are mining.

I have a low end GPU which gets about 34.5 MHash/s and it will often go for 3 or 4 minutes without turning in a share.  So if you are really mining that slow then it could take 20 or so minutes to find a valid share.  Watch the stats page on deepbit for how many shares your miner gets done.
Sam

Fair enough.  I was wondering if that rate was slow or not.  I'm running this on a Toshiba Satellite laptop with built-in ATI Mobility Radeon HD 4200 Series graphics.  However, the device that GUIMiner reports as being used is "AMD Athlon II P340 Du" which looks like my CPU instead of the GPU.  Any tips on getting the miner to recognize my GPU?

Deepbit updates the stats very responsively for me.  I see my miner find a share and then update my browser and it will have shown up already on the stats page.  But it can take a few minutes sometimes.  It sounds like you are mining, I would let it go for a couple of hours.

Edit: I meant account page not stats https://deepbit.net/account

Also if you are CPU mining I would use the Ufasoft miner.  I was getting 1.42MHsh/s on a 3.2GHz Pentium 4 which is pretty good for that older CPU.
Sam

Thanks.  I'll wait a few hours to see if it shows up.  I will also try the Ufasoft miner with my CPU if I can't figure out why it doesn't recognize my GPU.

[os2sam]

Really?!? Kilo Hash/second?  Are you CPU mining with a 80486 or something?  If you are really that slow then it may not be turning in enough work in a timely manner to make it look like your are mining.

I have a low end GPU which gets about 34.5 MHash/s and it will often go for 3 or 4 minutes without turning in a share.  So if you are really mining that slow then it could take 20 or so minutes to find a valid share.  Watch the stats page on deepbit for how many shares your miner gets done.
Sam

Fair enough.  I was wondering if that rate was slow or not.  I'm running this on a Toshiba Satellite laptop with built-in ATI Mobility Radeon HD 4200 Series graphics.  However, the device that GUIMiner reports as being used is "AMD Athlon II P340 Du" which looks like my CPU instead of the GPU.  Any tips on getting the miner to recognize my GPU?

Deepbit updates the stats very responsively for me.  I see my miner find a share and then update my browser and it will have shown up already on the stats page.  But it can take a few minutes sometimes.  It sounds like you are mining, I would let it go for a couple of hours.

Edit: I meant account page not stats https://deepbit.net/account

Also if you are CPU mining I would use the Ufasoft miner.  I was getting 1.42MHsh/s on a 3.2GHz Pentium 4 which is pretty good for that older CPU.
Sam

Thanks.  I'll wait a few hours to see if it shows up.  I will also try the Ufasoft miner with my CPU if I can't figure out why it doesn't recognize my GPU.

I'm not sure the 4200 series is supported by the Catalyst drivers.  If it is then try downloading the ATI/AMD Catalyst package.  On my older low end GPU, which a Radeon HD 4670, I had allot of trouble getting a Catalyst package it install at all except for the one that shipped with it on the CD, but that version (9.9ish?) Would not mine.  But I finally got Catalyst 10.7 to install and with OpenCL 2.2 got it to work with Phoenix 1.50 and haven't messed with it since.

So I guess I would try Catalyst version 11.6 and use the Ufasoft miner at first.  If the miner doesn't work then install the ATI OpenCL version 2.2 and try the Ufasoft miner again.  If you have trouble installing the 11.6 catalyst then roll back to around 10.7 and move forward from there until you get one to install.

The Ufasoft miner is the best CPU miner available and works best with Intel CPU's.  But it also works with AMD GPU's.  And now it even works with Nvidia with Cuda installed.
Good Luck,
Sam

[btc_artist]

Thanks for the info Sam.  I will look for a Catalyst driver for my 4200 if it is supported.  In the meantime I have switched to the Ufasoft miner and I'm now getting 1.2 Mhash/s. After a few minutes, it still hasn't appeared on my deepbit account page, but I'll let it run for awhile and see if it shows up.

[eleuthria]

Thanks for the info Sam.  I will look for a Catalyst driver for my 4200 if it is supported.  In the meantime I have switched to the Ufasoft miner and I'm now getting 1.2 Mhash/s. After a few minutes, it still hasn't appeared on my deepbit account page, but I'll let it run for awhile and see if it shows up.

With speeds that low, you will be seeing a long period between shares.  A GPU miner runs 300-400 MH/s on average, and even they can sometimes take over 1 minute to find a share (though normally its much faster, and sometimes multiple shares in a second or two, the joy of random hashing!).

[os2sam]

Thanks for the info Sam.  I will look for a Catalyst driver for my 4200 if it is supported.  In the meantime I have switched to the Ufasoft miner and I'm now getting 1.2 Mhash/s. After a few minutes, it still hasn't appeared on my deepbit account page, but I'll let it run for awhile and see if it shows up.

Yep, give it some time.  If your using Windoze I would download speedfan and monitor your laptops temperatures.  The Ufasoft miner has CPU Temp throttling mechanism now so the default is to not go over 83 degrees Celsius.  But the other temps should be monitored too, especially on a laptop.

Once you get your feet wet with your current configuration I would look at building a desktop with a GPU or two and use CG Miner which supports multiple pools with failover.
Sam

[btc_artist]

I was getting 1.42MHsh/s on a 3.2GHz Pentium 4 which is pretty good for that older CPU.

About how often were you finding a share with that rate?

With speeds that low, you will be seeing a long period between shares.  A GPU miner runs 300-400 MH/s on average, and even they can sometimes take over 1 minute to find a share (though normally its much faster, and sometimes multiple shares in a second or two, the joy of random hashing!).

With my current setup (Ufasoft at 1.2 Mhash/s) I haven't found a share yet in a little over an hour   I think I'll consider adding a GPU to a desktop and use that.

If your using Windoze I would download speedfan and monitor your laptops temperatures.

Thanks for the tip, I'll do that.

Once you get your feet wet with your current configuration I would look at building a desktop with a GPU or two and use CG Miner which supports multiple pools with failover.

Sounds like good advice.  What other pools would you recommend? Also, do you know if there's a GUI that uses CG Miner as a backend?

Thanks again!

[johnj]

I was getting 1.42MHsh/s on a 3.2GHz Pentium 4 which is pretty good for that older CPU.

About how often were you finding a share with that rate?

At 225 mh/s on (1) 5770, I was getting 1 share every 20s on average. 1.42 mh/s is 0.63% of 225, which would result in 1 share every 3169s (52 minutes). With blocks being on average 10minutes each, this isn't in your favor.

Note that I'm not super fancy at math and I could have converted stuff wrong.

[os2sam]

I was getting 1.42MHsh/s on a 3.2GHz Pentium 4 which is pretty good for that older CPU.

About how often were you finding a share with that rate?
Thanks again!

I don't really know.  I was CPU mining on my P4's just for giggles to see what the hash rate was.  I was getting more than 1 share per 52 minutes though, but the difficulty was allot lower in May/June when I started.

On my laptop which is a dual core 2.4 GHz Intel Core Duo I was getting 5.6Mhash/s with about 10 shares an hour or so.  Can't remember for sure now.

Anyway I would check into a pool that has a low hash rate and pays PPS, Pay Per Share.  Deepbit is solving a block about every 20 or 25 minutes and if you get one or two shares an hour, you will never see a share in that time frame.
Sam

[btc_artist]

So what you're saying is even if I *do* solve one or two shares an hour, they will be stale/worthless, since the block will already have been solved?  Makes sense.

And just to confirm what you already though, my 4200 series card is not supported from all the research I've been able to do.

[os2sam]

Once you get your feet wet with your current configuration I would look at building a desktop with a GPU or two and use CG Miner which supports multiple pools with failover.

Sounds like good advice.  What other pools would you recommend? Also, do you know if there's a GUI that uses CG Miner as a backend?

Thanks again!

I like Deepbit and BTC Guild the best.  I have only used two other pools besides them but not enough to recommend one way or the other.

But while your CPU mining I would search the Pools thread on the forums for a small PPS or SMPPS pool so that you can get some shares in during a round.  Smaller pools have longer rounds and PPS earns you a flat rate which would be best for a low hash rate.

No there is no GUI for CGMiner.  I like the text base interface myself.  It's easy to navigate.  But search the CG Miner thread, some guy said that he could/would code a GUI front end.  Don't know if he was serious or not.

Happy hashing,
Sam