1

I have an Avalon741 running on NiceHash with CGminer and I'm new to mining. The command I'm running is as follows:

sudo ./cgminer -o stratum+tcp://sha256.eu.nicehash.com:3334 -u <address> -p d=4096

When I run with this, I end up getting usually between 25% and 50% of shares rejected. Why is this? How can I improve the situation and contribute more effectively?

Here are some representative CGminer run statistics:

[2017-06-07 12:57:08.511] Started at [2017-06-07 02:20:49.716]                    
[2017-06-07 12:57:08.511] Pool: stratum+tcp://sha256.eu.nicehash.com:3334                    
[2017-06-07 12:57:08.511] Runtime: 10 hrs : 36 mins : 18 secs                    
[2017-06-07 12:57:08.511] Average hashrate: 5032956.9 Mhash/s                    
[2017-06-07 12:57:08.511] Solved blocks: 0                    
[2017-06-07 12:57:08.512] Best share difficulty: 140M                    
[2017-06-07 12:57:08.512] Share submissions: 7258                    
[2017-06-07 12:57:08.512] Accepted shares: 5335                    
[2017-06-07 12:57:08.512] Rejected shares: 1923                    
[2017-06-07 12:57:08.512] Accepted difficulty shares: 44435456                    
[2017-06-07 12:57:08.512] Rejected difficulty shares: 15138844                    
[2017-06-07 12:57:08.512] Reject ratio: 26.5%                    
[2017-06-07 12:57:08.512] Hardware errors: 11355                    
[2017-06-07 12:57:08.512] Utility (accepted shares / min): 8.39/min                    
[2017-06-07 12:57:08.512] Work Utility (diff1 shares solved / min): 94093.46/min

[2017-06-07 12:57:08.512] Stale submissions discarded due to new blocks: 7                    
[2017-06-07 12:57:08.513] Unable to get work from server occasions: 12                    
[2017-06-07 12:57:08.513] Work items generated locally: 274339                    
[2017-06-07 12:57:08.513] Submitting work remotely delay occasions: 6                    
[2017-06-07 12:57:08.513] New blocks detected on network: 1960

[2017-06-07 12:57:08.513] Summary of per device statistics:

[2017-06-07 12:57:08.513] AV7 0 (5s):32.99G (avg):5.032Th/s | A:44435456 R:15138844 HW:11355 WU                    
[2017-06-07 12:57:08.513] 
1

If you live in the U.S. you need to connect to the US server.

stratum+tcp://sha256.usa.nicehash.com:3334

NOT

stratum+tcp://sha256.eu.nicehash.com:3334

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.