So, I just installed a Radeon HD 6950 into my main machine. Its core clock is 800MHz, and the memory clock is 1200MHz. So, I believe this card should theoretically do quite well mining (at least 200kh/s). I managed to get my Reaper set up for my laptop, and even though I'm pretty familiar with the program, it hard boots everytime I launch reaper. I can't even get reaper to start and keep my computer on, so now I'm using CGMiner, and instead of hardbooting, I'm getting 100% stales. I have the latest AMD Catalyst drivers.
Here is my cgminer.conf
What I've noticed is when I turned the workload up to 128 or 256, it hardboots upon initialization. By lowering the workload down to 64, I was able to at least get a hashrate and no hardboot, however the stale rate is incredibly high, usually 80+% if not 100%.
I'm trying to play with some variables, but I've no clue which ones do what. Also, is there a way to input commands to the CGMiner console?
Any have any idea what I might be doing wrong, or maybe a thread that could point me in the right direction?
Here is my cgminer.conf
Code:
{
"pools" : [
{
"url" : "http://ltc.kattare.com:9332",
"user" : "*********",
"pass" : "*********"
}
]
,
"intensity" : "1",
"vectors" : "1",
"worksize" : "64",
"kernel" : "phatk",
"lookup-gap" : "0",
"thread-concurrency" : "64",
"shaders" : "0",
"gpu-engine" : "0-0",
"gpu-fan" : "0-85",
"gpu-memclock" : "0",
"gpu-memdiff" : "0",
"gpu-powertune" : "0",
"gpu-vddc" : "0.000",
"temp-cutoff" : "95",
"temp-overheat" : "85",
"temp-target" : "75",
"api-port" : "4028",
"expiry" : "120",
"gpu-dyninterval" : "7",
"gpu-platform" : "0",
"gpu-threads" : "1",
"hotplug" : "5",
"log" : "5",
"no-pool-disable" : true,
"queue" : "1",
"scan-time" : "60",
"temp-hysteresis" : "3",
"shares" : "0",
"kernel-path" : "/usr/local/bin"
}
I'm trying to play with some variables, but I've no clue which ones do what. Also, is there a way to input commands to the CGMiner console?
Any have any idea what I might be doing wrong, or maybe a thread that could point me in the right direction?
Mine are stock core and under clocked memory as well as under volted. Intensity 17, worksize 256 -g 1 -E 1
I get consistent 391+ Kh/s per card.
Not sure what the issue is for you. The stale rate is high ATM but Burnside's on it.
First of all, up your intensity to at least 10...and go up from there. Then I think thread concurrency is 4-5 * #shader processors. 6950 has around 1408 depending on model, so you are looking at 5632 or 7040.
Here is a nice guide.
https://bitcointalksearch.org/topic/consolidated-litecoin-mining-guide-for-5xxx-6xxx-and-7xxx-gpus-117221
