|
Title: Low difficulty and no shares being accepted - any solutions? Post by: zoormagoodness on September 27, 2015, 03:58:01 AM I have just tried to do a bit of GPU mining on cgminer with an AMD graphics card. I have installed the required hardware and I can connect to the pool fine. The only issue I am having is that no shares are being accepted due to low difficulty, I have spent hours researching trying to find the issue with no success. Please help!
Here is my .bat: setx GPU_MAX_ALLOC_PERCENT 100 setx GPU_USE_SYNC_OBJECTS 1 cgminer --scrypt -o stratum+tcp://stratum.bitcoin.cz:3333 -u zoormagoodness.two -p ss -I 14 -g 1 -w 256 --thread-concurrency 10240 --temp-target 55 --temp-overheat 65 --temp-cutoff 75 2>logfile.txt pause Here is a log of what is happening: [2015-09-27 13:47:31] Started cgminer 3.7.2 [2015-09-27 13:47:32] Probing for an alive pool [2015-09-27 13:47:33] Pool 0 difficulty changed to 256 [2015-09-27 13:47:34] Network diff set to 59.3G [2015-09-27 13:48:07] Pool 0 difficulty changed to 51 [2015-09-27 13:48:07] Stratum from pool 0 requested work restart [2015-09-27 13:48:11] Rejected 02d5f4f8 Diff 90/51 GPU 0 (Too low difficulty) [2015-09-27 13:48:19] Rejected 019b114b Diff 159/51 GPU 0 (Too low difficulty) [2015-09-27 13:48:22] Rejected 04c152b2 Diff 54/51 GPU 0 (Too low difficulty) [2015-09-27 13:48:42] Rejected 03259bbd Diff 81/51 GPU 0 (Too low difficulty) [2015-09-27 13:48:44] Rejected 02d0efcf Diff 91/51 GPU 0 (Too low difficulty) [2015-09-27 13:48:45] Shutdown signal received. [2015-09-27 13:48:46] Summary of runtime statistics: [2015-09-27 13:48:46] Started at [2015-09-27 13:47:34] [2015-09-27 13:48:46] Pool: stratum+tcp://stratum.bitcoin.cz:3333 [2015-09-27 13:48:46] Runtime: 0 hrs : 1 mins : 12 secs [2015-09-27 13:48:46] Average hashrate: 407.8 Kilohash/s [2015-09-27 13:48:46] Solved blocks: 0 [2015-09-27 13:48:46] Best share difficulty: 159 [2015-09-27 13:48:46] Share submissions: 5 [2015-09-27 13:48:46] Accepted shares: 0 [2015-09-27 13:48:46] Rejected shares: 5 [2015-09-27 13:48:46] Accepted difficulty shares: 0 [2015-09-27 13:48:46] Rejected difficulty shares: 255 [2015-09-27 13:48:46] Reject ratio: 100.0% [2015-09-27 13:48:46] Hardware errors: 52 [2015-09-27 13:48:46] Utility (accepted shares / min): 0.00/min [2015-09-27 13:48:46] Work Utility (diff1 shares solved / min): 286.53/min [2015-09-27 13:48:46] Stale submissions discarded due to new blocks: 0 [2015-09-27 13:48:46] Unable to get work from server occasions: 0 [2015-09-27 13:48:46] Work items generated locally: 13 [2015-09-27 13:48:46] Submitting work remotely delay occasions: 0 [2015-09-27 13:48:46] New blocks detected on network: 1 [2015-09-27 13:48:46] Summary of per device statistics: [2015-09-27 13:48:46] GPU0 | (5s):407.3K (avg):407.8Kh/s | A:0 R:255 HW:52 WU:286.5/m [2015-09-27 13:48:46] [2015-09-27 13:48:46] Stratum connection to pool 0 interrupted [2015-09-27 13:48:46] Pool 0 stratum+tcp://stratum.bitcoin.cz:3333 not responding! Any help would be appreciated! Title: Re: Low difficulty and no shares being accepted - any solutions? Post by: Newar on September 27, 2015, 04:17:57 AM Bitcoin mining with GPUs is obsolete. Title: Re: Low difficulty and no shares being accepted - any solutions? Post by: Fordee on September 27, 2015, 04:18:11 AM Although I cannot answer your question specifically, please understand that your task is completely academic.. meaning that you task will teach you, and help learn/understand the process, but not benefit you financially in any way.
Please don't take this the wrong way.. I was GPU mining back when difficulty was 12 Million, and 10 GPUs would net about 1 bitcoin every two weeks... plus or minus as machines kept dying in the summer heat.. Difficulty is currently 59 Billion, 335 Million, 351 thousand, and change.., or significantly higher than my example... Today, those 10 GPUs would only net me pennies, per month.. The only benefit would be to offset the heat cost in the house, or educational. If your goal is educational, I'm sure several people on the forum would gladly donate old mining gear to you for the cost of shipping -- and you would burn far less electricity than a GPU, and be able to dive right in to Asic history. If your goal is to obtain bitcoin, it's best just to buy it. Title: Re: Low difficulty and no shares being accepted - any solutions? Post by: zoormagoodness on September 27, 2015, 04:24:05 AM Although I cannot answer your question specifically, please understand that your task is completely academic.. meaning that you task will teach you, and help learn/understand the process, but not benefit you financially in any way. Please don't take this the wrong way.. I was GPU mining back when difficulty was 12 Million, and 10 GPUs would net about 1 bitcoin every two weeks... plus or minus as machines kept dying in the summer heat.. Difficulty is currently 59 Billion, 335 Million, 351 thousand, and change.., or significantly higher than my example... Today, those 10 GPUs would only net me pennies, per month.. The only benefit would be to offset the heat cost in the house, or educational. If your goal is educational, I'm sure several people on the forum would gladly donate old mining gear to you for the cost of shipping -- and you would burn far less electricity than a GPU, and be able to dive right in to Asic history. If your goal is to obtain bitcoin, it's best just to buy it. Ohh wow didn't know the difficulty was that high :\ Guess that's the issue then Yeah I'm just doing it out of curiosity to learn, really? that would be awesome! Thanks for the info Title: Re: Low difficulty and no shares being accepted - any solutions? Post by: achow101 on September 27, 2015, 04:36:15 AM You are mining with the wrong algorithm. In your command you have it mining with scrypt, not sha256.
Title: Re: Low difficulty and no shares being accepted - any solutions? Post by: zoormagoodness on September 27, 2015, 09:39:58 AM You are mining with the wrong algorithm. In your command you have it mining with scrypt, not sha256. Ohh okay, so this should fix it?Title: Re: Low difficulty and no shares being accepted - any solutions? Post by: VirosaGITS on September 27, 2015, 11:59:50 AM You are mining with the wrong algorithm. In your command you have it mining with scrypt, not sha256. Ohh okay, so this should fix it?You can't, you can't mine SHA256d in an academic perspective. You can replace your "scrypt" to "sha256" or try blank. Not sure for that particular CGminer version, you're using a pretty old one. But you'll be making a few cents per year at most, it would take you years to reach minimum payout at a pool and you'd be using tons of electricity. I point you toward the Altcoin mining support section. You can get started with X11. Title: Re: Low difficulty and no shares being accepted - any solutions? Post by: zoormagoodness on September 27, 2015, 12:17:15 PM You are mining with the wrong algorithm. In your command you have it mining with scrypt, not sha256. Ohh okay, so this should fix it?You can't, you can't mine SHA256d in an academic perspective. You can replace your "scrypt" to "sha256" or try blank. Not sure for that particular CGminer version, you're using a pretty old one. But you'll be making a few cents per year at most, it would take you years to reach minimum payout at a pool and you'd be using tons of electricity. I point you toward the Altcoin mining support section. You can get started with X11. Okay, whats that? Title: Re: Low difficulty and no shares being accepted - any solutions? Post by: VirosaGITS on September 27, 2015, 12:22:53 PM You are mining with the wrong algorithm. In your command you have it mining with scrypt, not sha256. Ohh okay, so this should fix it?You can't, you can't mine SHA256d in an academic perspective. You can replace your "scrypt" to "sha256" or try blank. Not sure for that particular CGminer version, you're using a pretty old one. But you'll be making a few cents per year at most, it would take you years to reach minimum payout at a pool and you'd be using tons of electricity. I point you toward the Altcoin mining support section. You can get started with X11. Okay, whats that? It's an algo for Altcoins, another coin, one that can be mined with GPU perhaps profitably, depending on your electricity cost, unlike BTC. Since this is the Bitcoin-only board, i can't really elaborate on it much. I would recommend you make a thread in the altcoin section and if you want, post the link here to continue the conversation with me/us. |