Hardware 4x 7950, 8GB of Ram, FX-6100 processor.
SoftwareCatalyst 12.8
ADL SDK 5.0
APP SDK 2.7
Xubuntu 12.04
CGMiner 2.11.4
What was happening before - Previously I was running this rig with 3 cards. I was getting ~1.5 Mh/s - 500 Kh/s per card. Not mind blowing, but acceptable. I was using the following command to start.
export DISPLAY=:0
export GPU_USE_SYNC_OBJECTS=1
export GPU_MAX_ALLOC_PERCENT=100
./cgminer --scrypt -o stratum+tcp://stratum.give-me-ltc.com:3333 -u username -p password --thread-concurrency 24000 -I 18 -w 256 -g 1
So now I've upgraded my rig by adding an extra card. Instead of getting gains it seems my cards are simply running slower apart from GPU0.
It seems even at lower intensities now it's mining unevenly (@ I=13)
Instead of getting 500 Kh/s I'm getting ~ 350 - 400 a card, even though with the same settings before I was getting 500 (same as GPU0). Can anyone suggest trouble shooting methods or ideas as to whats going on?
Help appreciated.
