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1501  Other / Beginners & Help / Re: Submersing a rig on: January 23, 2012, 08:09:40 AM
Im actually reconsidering my position on this and looking into submerging my rigs for when summer comes.

Here is the thing, I have a large Koi pond (50K liter) next to the shed where I would want to put my miners this summer.  And it wouldnt hurt to warm the pond water during fall and winter, even if the effect will be minimal in the best case. Even with a perfect heat exchange, 2000W is going to do next to nothing to the overall water temperature in the pond, but raising the temperature in the filters is beneficial to the filtering process, every degree helps.

Ill have to expand the filtration system for the pond anyway and  I was considering putting a few large (1000L) settling tanks in the shed. By itself, I wouldnt have expected that to do much, if anything, unless perhaps if I created an air duct of sorts around the miners to concentrate the warm air, and blow that warm air through one of the (open) tanks; i already have a 160L/hour air pump, I could add another one for that purpose. It wouldnt be much of a settling tank anymore then, and I guess it wouldnt do too much to reduce ambient heat either. or?

I guess the more efficient thing to do is submerge my rigs in mineral oil, pump the oil through a radiator which is suspended in a settling tank or filter  tank (Im using 300 liter rain barrels for biofiltering, the filter has a pretty high volume, up to 25K liter per hour).

A few questions, not sure if anyone here can help me with

- how toxic is mineral oil? Or would vegetable oil be better here? I dont fancy the idea of a small leak killing all my fish. I remember reading that a cheap way to buy large quantities of oil for submerged cooling is buying them as... horse laxative. I cant imagine a horse laxative being excessively toxic... ?

- what kind of hoses does one need? Do you need a special kind of rubber or plastic for oil? From the shed to the filtering installation is a fair few meters

- any suggestions on oil filtering?

- does anyone have any idea of dimensioning this? I got no clue how big a pump (pressure and flow rate) or radiator I would need. If it helps, by then I plan on having ~2000W worth of mining gear. The pond water rarely gets over 25C and more typical is 20C  and the water in the filter would have no time to heat up significantly because of the high flow rate. I would *guess* keeping the oil below 35-40C would be good enough to keep the cards reasonably cool, although that is more guesswork on my part.

ANy thoughts or ideas on the matter would be appreciated.
1502  Other / Off-topic / Re: Butterfly Labs - Bitforce Single and Rig Box on: January 23, 2012, 07:39:48 AM
Everyone that has paid for these with paypal seems to be all warm and fuzzy feeling because of paypals protection. If I bought one of these with paypal I would be sweating bullets. I sold a notebook for $1900 on ebay and accepted paypal as a payment. They told me if the total amount was under $2000 and I had the shipping information that proved I mailed it I was covered. So I took the money that I won from the item and never gave it another though. 2 months later paypal send me a letter saying I owed them all that money back. Later they sent me to collections for it. I would not trust them at all. Once butterfly actually has your money in hand (which they can do without giving you anything) I would not put my faith in paypal to refund it.

So what you are really saying is that if BFL -as seller- should be "sweating bullets". And you are right, at least if BFL wanted to scam you. Or if you wanted to scam them.

As a customer there is fairly little to be afraid off though. More so since several people have canceled their order and had zero issues getting their money back from BFL. There are already a few 100 pages worth of "discussion" about this on this board, its getting a bit old.
1503  Bitcoin / Mining software (miners) / Re: ANUBIS - a CGMINER Web Frontend on: January 23, 2012, 12:32:01 AM
AFAIK, the interface on cgminer doesnt support any of that yet, like pool management or even controlling GPU/fan/clockspeed etc. Its still being worked on. Cant expect those features in anubis before they are even in cgminer.
There are lots of things that can and should be added to it, but this is brand new, and already as it is, I find it extremely useful to be able to monitor my rigs hashrate, temps etc in a single webpage that runs locally on my own machine. Dont have any of the problems you reported btw.
1504  Bitcoin / Mining software (miners) / Re: ANUBIS - a CGMINER Web Frontend on: January 23, 2012, 12:16:09 AM
The LT, you are asking for features which are already in cgminer, while dissing as unneeded features which are not (but are in BAMT).
You are aware this is being developed for.. cgminer, right ? Smiley.
1505  Bitcoin / Alternative clients / Re: BitcoinSpinner on: January 23, 2012, 12:03:43 AM
You can backup your wallet, which contains your private key, and import it in any other client. Its already possible (though tricky with the current official client). You dont rely on the server.
1506  Bitcoin / Mining support / Re: PPS vs Proportional on: January 22, 2012, 11:59:48 PM
I've tried bitminter's 12 hours run yesterday and earned 0.228347831 BTC!!! Holy shit! At average I should get 0.09 BTC for 12h with my 221 mhash/s.

 On lucky days you may get 3-4x your average. On unlucky days you will get nothing. Thats not whats important, since it evens out, more important is that on average you will gain a fair amount more because of lower fees (well, none really) and you dont pay for the poolhoppers. And just as importantly, by joining a small pool, you help keep the bitcoin network more secure.

As for unconfirmed, thats with any pool. As mentioned above, blocks only mature after 120 confirmations. Thats a bitcoin thing, nothing to do with the pool. Its possible a block will be orphaned, but extremely unlikely, and near impossible after a few confirmations. I dont think bitminter has had more than a single orphaned BTC block so far. Maybe even none, not sure.
1507  Bitcoin / Mining support / Re: PPS vs Proportional on: January 22, 2012, 08:49:37 PM
No. Deepbit is awesome. It is the biggest pool for a reason.

The only reason I see is clueless newbies thinking a big pool has to be a good pool.
Its insanely expensive, and if you use proportional payout like the OP, you are giving at least 20% of your revenue to pool hoppers.

I can see why pool hoppers love it though.
1508  Other / Beginners & Help / Re: where from here? on: January 22, 2012, 08:41:35 PM
You can use the CPU the mine litecoins, mining litecoins doesnt need opencl. You can trade litecoins for bitcoins, but litecoins arent worth very much currently, I dont think its worth frying your laptop for.
1509  Local / Biete / Re: 2x Sapphire HD5830 XTREME on: January 22, 2012, 08:35:07 PM
Are you able/willing to ship to Belgium? How much would that cost? I might be interested if you are willing to let go of the cards for a slightly lower price and assuming shipping costs are reasonable.

Sorry about writing in English btw, I understand German good enough to read, but I fear I cant write it, so I hope you understand English Smiley.
1510  Other / Beginners & Help / Re: Are Bitcoins Worthwhile? on: January 22, 2012, 07:49:39 PM
By raw governmental power. Or more accurately, by the fact the government will accept it as valuable, and assist people who have it or jail people who don't pay their taxes with it. True fiat currency has nothing physical backing it, but it's basically secure as long as its government remains in power and doesn't start printing money to pay off debts.

This is not quite accurate. Fiat money valuation is based on nothing but demand and supply; same as bitcoin. The difference you are alluding to is that fiat money is legal tender; that says nothing about its value, only that one is forced to accept fiat money to settle debts. So when you get an invoice for whatever, say your utility bill, you can pay it with euro's if you live in the euro zone. You can not use dollar, roebel, gold, bread or bitcoins, unless your supplier voluntary accepts it . Thats basically the only difference here.

Granted, the fact fiat money is legal tender does ensure to some extend a steady demand, but it does nothing to protect its value.

As for something backing it; I think its good BTC is not backed by anything. If you back a currency by something, be it another currency, gold, oil or whatever, it means the value of the currency is also dependent on the value of the commodity backing it, even though that can fluctuate independently for completely unrelated reasons. I dont see how thats an advantage; it helps no one if a currency suddenly appreciates or depreciates because of change in supply or demand of the underlying commodity.
1511  Bitcoin / Pools / Re: [18 GH][0% Fee] A1BITCOINPOOL.COM 13 BTC BONUS PROPORTIONAL POOL on: January 22, 2012, 07:38:07 PM
Bounty rewards encourage block completion, and I think it is just a promo. Also, hopping doesn't produce rewards greater than 20%...on average, or just maybe cause I suck...

If you have an infinite number of pools to hop, you can theoretically double your rewards. IIRC hopping just one pool delivers up to ~20% better returns. That means -20% for people not hopping (assuming equal hash rate).

Pool hash rate is 18 GH, if it were all hoppers, it would be donuts, baby...  

Already most of the proofs are delivered by miners no longer mining there. ringking, 2pair, rastapool. Hoppers. Cant blame them.

1512  Other / Beginners & Help / Re: Are Bitcoins Worthwhile? on: January 22, 2012, 11:47:30 AM
3 reasons you ought to be interested in bitcoin.

1) speculative. If bitcoin gets more widespread adoption, its value could potentially explode. Its a gamble, because it could go either way, and bitcoins might become close to worthless a year from here, no one really knows, but it seems more likely in the long run (a few years) the value will go up substantially. This is a good reason to buy a  limited amount of coins and hope for the best.

2) mining is profitable if you have cheap electricity and/or efficient hardware. Its easy to calculate, use any bitcoin calculator and check your electricity prices. You will need efficient hardware though, that means recent ATI videocards or FPGAs. Mining is a zero sum game, the amount of coins to be mined is fixed, so compete will all other miners. If you dont have more efficient hardware or cheaper electricity, it will not be profitable for you.

3) use it to transfer funds across the globe with minimal/no fees, just like you might use paypal or western union. This doesnt require you hold a lot of coins, you can buy them just before you need them.

As for being able to buy stuff with bitcoins; sure, you can. To name just one excellent way:

I use it to buy stuff on amazon. Zero fees.

1513  Other / Beginners & Help / Re: almost there on: January 22, 2012, 11:21:52 AM
What hardware, what OS, what software and what pool are you using?
1514  Bitcoin / Pools / Re: [90 GH/s PPLNS] *** Merged Mining! *** on: January 22, 2012, 11:13:18 AM

I am working on some things to improve this. I have prioritized long polling running on my test server. Fast miners get long poll messages first.

Good idea.

When donations are implemented I'm thinking of making that part of the prioritization as well.

Bad idea. Think about it, having high priority LP is no benefit to any individual miner, whether he donates or not; particularly if he has a low hashrate. Its a benefit to everyone in the pool if he has a high hashrate.

Im sure you're thinking hard of ways to give people an incentive to donate, but this isnt the one. If you would implement a bounty system for finding long blocks, perhaps you could match that with donations. For instance only donators are eligible for the bonus. Other things to consider, would be extra services, if you can implement it, like email or sms notifications for solving blocks, hashrate alerts and the like.  Or at least a JSON interface that would allow others to implement it, currently you can only get general pool stats over JSON, not individual stats.
1515  Economy / Economics / Re: Bitcoin, debt as deep as the banks couldn't have imagined. on: January 22, 2012, 10:28:28 AM
Its not just loans. Think if your salary was denominated in BTC. You might make $3K the first month and $30K/month.. or $300 a year later. You can see thats just as impossible. As long as btc remains this volatile, it can not be used for things like denominating salaries or non trivial mid or long term loans. And vice versa, as long as bread, oil and salaries are never denominated in BTC, its not going to be stable. Catch 22 which I think btc will never get out of. BUt it doesnt have to, you can denominate loans, salaries and barrels of oil in anything else, and still use BTC to do the transactions.
1516  Bitcoin / Pools / Re: [90 GH/s PPLNS] *** Merged Mining! *** on: January 22, 2012, 09:03:03 AM
Bitminter (app) doesnt support FPGAs. Yet, and I dont even know if its planned. Its still a relatively niche market, and bitminter (the app) aims to make mining easy for the less technical, so Im not sure it makes a lot of sense for DrHaribo to invest time in supporting them at this point. Wouldnt be easy either without access to the hardware.

Of course you can use the pool with whatever miner app you want, or whats supplied with the FPGA.
1517  Bitcoin / Pools / Re: [18 GH][0% Fee] A1BITCOINPOOL.COM 13 BTC BONUS PROPORTIONAL POOL on: January 22, 2012, 09:00:10 AM
Im mining here with a single rig, because more pools=better IMO and so Ill help with the first block.

But Ill be honest, it makes no sense. The proportional payout is a non starter. There is a reason nearly all other pools changed to different systems.

I joined in when you were over 1.5M shares already. Now its at 1.8M and there is no way I can make a profit. Either this will be a long block and Ill lose because of it, or it will be found shortly, and Ill lose because of the proportional payout to all the "smart" miners who have already stopped mining there. I guess the best I can hope for is that the first block is found asap, minimizing my loss. Then Ill do what everyone else with a clue will do: Ill keep mining the second block until you get to a ~40% CDF.

Bounties are not changing anything here. Its not sustainable, and pool hoppers would have equal chances to win the bounty anyway, on top of improving their per share payout significantly by jumping ship at the right moment. 10BTC bonus on a 50BTC blocks is also "only" 20%. Pool hopping will gain you more than that, or put differently, the ones that dont hop risk losing more than that. You cant blame hoppers either. Or you can if you like, but its not going to change a thing.

1518  Bitcoin / Mining software (miners) / Re: ANUBIS - a CGMINER Web Frontend on: January 21, 2012, 08:01:03 PM
I guess I can screw anything up...

mysql> GRANT ALL ON 'anubis_db' to 'anubis'@'localhost' identified by 'your password here';

I can't get this line correct, I get either syntax error or no database selected.  Password, and localhost are easy, but what goes in 'anubis_db' and 'anubis'? My anubis directory is ~/anubis if that helps.

anubis_db is the name of the database anubis will use, and anubis is the name of the user. You can leave them as such, or change them, and change the accordingly.

I also ran in to trouble creating the user (ERROR 1396 (HY000): Operation CREATE USER failed ..), I ended up creating a database called  "anubis" (without _db) and for some reason it did work with no issue.
1519  Bitcoin / Alternative clients / Re: BitcoinSpinner on: January 21, 2012, 04:17:37 PM
What keeps you from using numerical pin when the password field accepts alphanum characters?

Android shows a different keyboard if you can only enter numeric. Like a dial pad, nice big buttons.
1520  Bitcoin / Alternative clients / Re: Looking for a small Bitcoin client on: January 21, 2012, 01:31:41 PM
Curious why you have such stringent limitation on sourcecode size when the blockchain is 1+GB?
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