New Feathercoin Miner here

hi guys,
ive just bought an ASrock4 970 board and 2 7950 cards.
However they are not running as well as i would have expected

one is running at 432kh/s and the other 480kh/s with the following script
C:\cgminer-3.7.2\cgminer.exe --scrypt --shaders 2048 --intensity 16 --auto-gpu --auto-fan -o stratum+tcp://jp.nut2pools.com:5565 -u drcobb84.work1 -p work11 --failover-only -o stratum+tcp://jp.nut2pools.com:5565 -u drcobb84.work1 p -

however i have been given a ‘better’ script by somebody else, however when i run it. GPU0 always dies and says sick. Even when i swap the cards around in the motherboard its always the one in the same slot that does it.
The second script gets me around 600kh/s however only one card works.

setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
cgminer --scrypt -w 256 --shaders 0 --intensity 20 -v 1 -g 1 --lookup-gap 2 --thread-concurrency 21712 --gpu-engine 1100 --gpu-memclock 1500 --gpu-memdiff 0 --temp-cutoff 90 -o stratum+tcp://jp.nut2pools.com:5565 -u drcobb84.work1

Any suggestions would be greatly appreciated.
PS does anybodyhere use skype?

MrSheep

I run my sapphire 7950 the following way with approximately 600kH/s:

export DISPLAY=:0
export GPU_MAX_ALLOC_PERCENT=100
export GPU_USE_SYNC_OBJECTS=1

./cgminer --scrypt --gpu-engine 1000 --gpu-memclock 1500 --thread-concurrency 22272 --intensity 19 --worksize 256 --lookup-gap 2 -g 1 --no-submit-stale --failover-only -o stratum+tcp://pool.maeh.org:19327 -u MyFTCAddress -p x -o stratum+tcp://pool2.maeh.org:19327 -u MyFTCAddress -p x

Running cgminer-3.6.4-x86_64 under Linux. What is the error that you get with the second call that causes one GPU not to run or hash? Not sure about two cards, but you may give those figures twice, like --intensity 20,20 -v 1,1 -g 1,1 and the like to tell cgminer there are two cards to hash on?

Regards,
MrSheep

PS: Failover to the same pool does not look like that’s how it was meant to be used… ;-)

The 7950 has 1792 shaders. I’d remove that from your config. Try either an intensity of 13 with 2 GPU threads or 19 with one.