Quote from: Starlightbreaker on February 05, 2014, 01:01:04 AM

Quote from: shirenlihei on February 05, 2014, 12:35:47 AM

Quote from: nequaquamvacui on February 05, 2014, 12:04:14 AM

Quote from: shirenlihei on February 04, 2014, 10:26:21 PM

MSI R9 270X GAMING

setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
vertminer --scrypt-vert -o stratum+tcp://vtcpool.co.uk:3333 -u useyourworker -p useyourworkerpw -w 256 -I 19 -g 1 --thread-concurrency 12288 --shaders 1280 --gpu-engine 1100 --gpu-memclock 1500 --lookup-gap 2 --remove-disabled --temp-target 75 --auto-fan --auto-gpu --gpu-fan 20-75 --temp-cutoff 85 --temp-overheat 78 --temp-target 73 --gpu-powertune -20 --gpu-vddc 0.000

hashrate 220KH/S

I have a Sapphire r9 270x but just can't get over 75 kh/s without HW errors.
It's strange I can't set a thread concurrency over 1024. I thought TC was a multiple of the shader count. My gpu has 1280 shaders and I can't even set thread-concurrency=1280 ?
It gives me "Error -61: clCreateBuffer, , decrease TC or increase LG"
I'm on windows with the modifed cgminer 3.7.2

try to use setx GPU_MAX_ALLOC_PERCENT 200 (or even bigger number).

I use vertminer and directly execute the command above.
I don't use vertminer.conf to set the parameters, it makes a lot of troublesome. For example, setx GPU_MAX_ALLOC_PERCENT 100 can not be active if you use vertminer.conf, even if I separately execute setx GPU_MAX_ALLOC_PERCENT 100 before running vertminer.
But for my 280x system and 7850 system, I can use vertminer.conf.

that doesn't make sense.

setx is environment variable for windows.

I am also curious about it. May be I should execute setx as an administrator.