"Hello World" Pooled Mining | Bitcointalksearch.org

fpgaminer

hero member

Activity: 560

Merit: 517

Quote

so just to clarify, everytime I call Getwork I get a different formatted data hash to work on? Then if the miner finds a block it sends it back with getwork[data] to claim it?

Yup. The miner sends back data with a valid nonce injected into the data. Bitcoin/bitcoind will check to make sure it's correct, and if so it adds it to the block chain and thus receives its shiny new 50 BTC.

metasyntactic

newbie

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Quote from: Garrett Burgwardt on April 27, 2011, 12:23:13 PM

In this case, just setup one computer with the client, set it to allow connections from any ip (or a range) rpcallowip=192.168.1.*, and point all your miners at that.

Sounds nice and simple

so just to clarify, everytime I call Getwork I get a different formatted data hash to work on? Then if the miner finds a block it sends it back with getwork[data] to claim it?

FatherMcGruder

sr. member

Activity: 322

Merit: 250

Make sure your computers' GPUs support mining too.

Garrett Burgwardt

sr. member

Activity: 406

Merit: 256

In this case, just setup one computer with the client, set it to allow connections from any ip (or a range) rpcallowip=192.168.1.*, and point all your miners at that.

metasyntactic

newbie

Activity: 2

Merit: 0

I have access to about 20 computers with GPUs in my office so I plan to use them out of hours as my personal pooled mining system. e.g. Modified DiabloMiner running on each of the computers and communicating with some central server which gives out and receives work.

Idea would be to simply:
(1) Run the bitcoin binary on a computer with -server argument
(2) Server communicates with bitcoin over JSON-RPC (getwork)
(3) Distribute work to computers (implement protocol compatible with Diablominer)
(4) Server receives work from miners
(5) If block found send it to bitcoin binary to 'claim' any found block.

Two questions:
(1) How do I claim a found block? (i.e. in step 5)
(2) What is the best way of distributing work?
...or alternatively does any simple code for this exist e.g. source code for slush's pool?

(I'm a newbie so apologies if this is covered already but I couldn't find it in a simple example of pooled miner and puddinpop's code seems overkill since I don't won't try and scam myself by sending bad data)

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