Re: [ANN] profit switching auto-exchanging pool - middlecoin.com
I think you have a point here with cards not recovering after driver crash, as I have only been seeing it recently (past couple of days), and I started tweaking my settings around the same time, one time my driver crashed with one setting (I reverted back). So maybe when the driver crashed it didn't fully recover (I hadn't restarted the computer). I just restarted the computer now, and things seem to be going ok. We will see.
It's pretty simple. Your rig isn't as stable as you think it is. You need to tweak your settings to see what's going on. I bet you're seeing GPU usage % is fluctuating too.
You likely have one or more of the following going:
-interference between cgminer and a memory intensive CPU miner (PTS for example)
-your clock/voltage settings of one or more of your video cards is not recovering properly following a driver crash
-your OC isn't stable causing the driver crash in the first place
-your PSU is underpowered for the power requirements.
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Next thought. Can everyone please stop referring to WU in terms of MH/s. WU is not measured in MH/s, it's measured in shares/min.
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Next thought. It seems the useast server is having troubles. My miners keep failing over to the default west (middlecoin.com) server.
I understand fluctuations in WU and reject rate when starting out a fresh run of cgminer, but what Im talking about is fluctuations in hashrate appearing after running for 24 hrs. For example on a fresh run my 7950s get stable as a rock 640khs, but when I check them at the end of the day they are fluctuating between 590-635 constantly, I also thought I may be because of coin/difficulty changes, but the fluctuations continue even during a specific coin. One strange thing is that one of the cards doesn't seem to fluctuate at all and stays at 640, btw the rig Im talking about has 6 - 7950's in it, running Windows 7 headless. And all this fluctuation immediately stops when I restart cgminer. 
It's pretty simple. Your rig isn't as stable as you think it is. You need to tweak your settings to see what's going on. I bet you're seeing GPU usage % is fluctuating too.
You likely have one or more of the following going:
-interference between cgminer and a memory intensive CPU miner (PTS for example)
-your clock/voltage settings of one or more of your video cards is not recovering properly following a driver crash
-your OC isn't stable causing the driver crash in the first place
-your PSU is underpowered for the power requirements.
--------------------------------------------
Next thought. Can everyone please stop referring to WU in terms of MH/s. WU is not measured in MH/s, it's measured in shares/min.
---------------------------------------------
Next thought. It seems the useast server is having troubles. My miners keep failing over to the default west (middlecoin.com) server.