I have a problem mining coins requiring scrypt, while everything is OK with sha-256 coins.
I tried different pools, different coins (LTC and NVC) and the result is always the same - plenty of work items generated locally and almost nothing submitted. Pool stats show 10 khash/s at most, while my miner shows 1200-1300 khash. Do you have any ideas what I am doing wrong? I'm using cgminer and 2x Sapphire 7970.
$ ./cgminer -o http://coinotron.com:3334 --scrypt -u myworker -p mypwd --worksize 256 -g 2 -I 13 --lookup-gap 2 --gpu-engine 950 --gpu-memclock 1500 --shaders 2048
[2013-04-10 06:48:41]
Summary of runtime statistics:
[2013-04-10 06:48:41] Started at [2013-04-09 23:25:19]
[2013-04-10 06:48:41] Pool: http://coinotron.com:3334
[2013-04-10 06:48:41] Runtime: 7 hrs : 23 mins : 21 secs
[2013-04-10 06:48:41] Average hashrate: 1.3 Megahash/s
[2013-04-10 06:48:41] Solved blocks: 0
[2013-04-10 06:48:41] Best share difficulty: 2.22K
[2013-04-10 06:48:41] Share submissions: 20
[2013-04-10 06:48:41] Accepted shares: 19
[2013-04-10 06:48:41] Rejected shares: 1
[2013-04-10 06:48:41] Accepted difficulty shares: 2432
[2013-04-10 06:48:41] Rejected difficulty shares: 128
[2013-04-10 06:48:41] Reject ratio: 5.0%
[2013-04-10 06:48:41] Hardware errors: 0
[2013-04-10 06:48:41] Utility (accepted shares / min): 0.04/min
[2013-04-10 06:48:41] Work Utility (diff1 shares solved / min): 5.77/min
[2013-04-10 06:48:41] Stale submissions discarded due to new blocks: 0
[2013-04-10 06:48:41] Unable to get work from server occasions: 72
[2013-04-10 06:48:41] Work items generated locally: 6501
[2013-04-10 06:48:41] Submitting work remotely delay occasions: 0
[2013-04-10 06:48:41] New blocks detected on network: 224
[2013-04-10 06:48:41] Summary of per device statistics:
[2013-04-10 06:48:41] GPU0 | (5s):0.000 (avg):639.1Kh/s | A:8 R:0 HW:2019 U:0.0/m I:13
[2013-04-10 06:48:41] GPU1 | (5s):0.000 (avg):638.2Kh/s | A:11 R:1 HW:1993 U:0.0/m I:13