Thanks for your help guys - going to have a play with the settings. I know I'm not the only one with this problem so will post my results.
I've removed catalyst 14 and gone back to 13.11 and its not made a difference. Will probably try going back to 12 next if I can find a copy. These cards are mining on standard scrypt coins fine.
I'm using windows 7 btw.
still do not know what cards your running , try lower clock for now and maybe higher thread concurrency ( I know my R9 290's HW errors at 8k but not 16k +
13.11 deviantly works
I thought windows needed setx
set
x GPU_MAX_ALLOC_PERCENT 100
set
x GPU_USE_SYNC_OBJECTS 1
ultracoinminer -o stratum+tcp://utc.greekpool.eu:3337 -u myusername -p mypw --scrypt-jane --sj-nfmin 4 --sj-nfmax 30 --sj-time 1388361600 --expiry 1 --queue 0 --scan-time 1 --intensity 10 --gpu-engine 1050 --worksize 256 -g 2 --thread-concurrency 8192
personally I would do something like this
UTCpoolstart.bat setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
ultracoinminer --scrypt-jane --sj-nfmin 4 --sj-nfmax 30 --sj-time 1388361600 --config UTCpool.config
UTCpool.config{
"pools" : [
{
"url" : "stratum+tcp://ultra.nitro.org:3337",
"user" : "name",
"pass" : "x"
},
{
"url" : "stratum+tcp://utc.greekpool.eu:3337",
"user" : "name",
"pass" : "x"
}
],
"thread-concurrency" : "24768",
"shaders" : "2560",
"api-listen" : true,
"intensity" : "17",
"worksize" : "128",
"auto-fan" : true,
"gpu-fan" : "60-85",
"auto-gpu" : true,
"temp-cutoff" : "80",
"temp-overheat" : "75",
"temp-target" : "70",
"expiry" : "30",
"gpu-dyninterval" : "7",
"log" : "5",
"queue" : "1",
"retry-pause" : "5",
"scan-time" : "10",
"temp-hysteresis" : "3",
"shares" : "0",
"gpu-thread" : "1",
"gpu-engine" : "300-940",
"sharethreads" : "32",
"lookup-gap" : "2",
"gpu-powertune" : "20",
"gpu-memclock" : "1250"
}
my R9's hash 540 kh with those settings more if I bump memory they go slower with 1ghz core because I have no cooling for them they hit 80 deg fast
they hash at 610kh's just by changing the target temps to 83 80 77
I have an tweaked 680 kh\s SJ setting that I am mining with with out OC keeping 80 deg temp but prefer 75 deg upper range
"thread-concurrency" : "16256", scrypt jane fail safe
"thread-concurrency" : "32765", optimal
