I also have a Barts GPU (6850) and I went through the exact same problems as you.
How do you make your memory clock stay at 300mhz? When I set the memory clock to 500 or any other clock in Afterburner and then turn on the miner, the memory clock goes up to 1000 again. I've also tried changing the memory clock while the miner is running, it doesn't seem to make a difference. I did manage to raise my core clock and got a few extra mh/s.
Also, I set my workload to 128 (-w 128). Try it and tell me if it makes any difference.
Topic: Verification failed, check hardware! - page 2. (Read 27724 times)
Alright thanks, it's working good now. Now I have a problem with lowering my memory clock because in CCC it doesn't go below 1050Mhz so even if I set it in MSI Afterburner to 525Mhz it doesn't lower it. Also could you write out how I could set the phatk worksize, thanks. I am at 270Mhs at the time of this post.
Oh wait, is it -w 256 to put in the .bat?
And nvm I got the clock to stay at 300Mhz, yay for quieter fans.
Oh wait, is it -w 256 to put in the .bat?
And nvm I got the clock to stay at 300Mhz, yay for quieter fans.
You can edit the options through the menus in the program for GPU, this is what you'd get in the cgminer.conf:
Code:
"intensity" : "5",
"vectors" : "2",
"worksize" : "256",
"kernel" : "phatk",
Alright thanks, it's working good now. Now I have a problem with lowering my memory clock because in CCC it doesn't go below 1050Mhz so even if I set it in MSI Afterburner to 525Mhz it doesn't lower it. Also could you write out how I could set the phatk worksize, thanks. I am at 270Mhs at the time of this post.
Oh wait, is it -w 256 to put in the .bat?
And nvm I got the clock to stay at 300Mhz, yay for quieter fans.
Oh wait, is it -w 256 to put in the .bat?
And nvm I got the clock to stay at 300Mhz, yay for quieter fans.
This is your GPU returning invalid hashes from it's kernel. This is because new drivers are crap for older cards.
- Uninstall AMD APP SDK
- Uninstall AMD Catalyst Install manager: choose "uninstall all software", make sure you have only a VGA driver after restart.
- Manually remove these files not removed by the installer; any other obvious ATI files with the same file date:
C:\Windows\System32\amdocl64.dll
C:\Windows\System32\amdoclcl64.dll
C:\Windows\System32\OpenCL.dll
C:\Windows\SysWOW64\amdocl.dll
C:\Windows\SysWOW64\amdoclcl.dll
C:\Windows\SysWOW64\OpenCL.dll
- Install just the Catalyst 11.11 driver package (no SDK is needed; the AMD APP runtime is included with driver)
- Mine just a bit slower on your 6870 than a 5830 would.
Better:
- use cgminer
- set phatk worksize to 256 and underclock GPU RAM to 300MHz for best power efficiency and higher hashrate
- Uninstall AMD APP SDK
- Uninstall AMD Catalyst Install manager: choose "uninstall all software", make sure you have only a VGA driver after restart.
- Manually remove these files not removed by the installer; any other obvious ATI files with the same file date:
C:\Windows\System32\amdocl64.dll
C:\Windows\System32\amdoclcl64.dll
C:\Windows\System32\OpenCL.dll
C:\Windows\SysWOW64\amdocl.dll
C:\Windows\SysWOW64\amdoclcl.dll
C:\Windows\SysWOW64\OpenCL.dll
- Install just the Catalyst 11.11 driver package (no SDK is needed; the AMD APP runtime is included with driver)
- Mine just a bit slower on your 6870 than a 5830 would.
Better:
- use cgminer
- set phatk worksize to 256 and underclock GPU RAM to 300MHz for best power efficiency and higher hashrate
Alright so I have an ATI 6870, Bitcoin is up to date, GUIMiner is v2012-12-03 and the error I receive after putting my details to login to the slush pool:
2013-04-16 04:57:51: Listener for "Default" started
2013-04-16 04:57:52: Listener for "Default": api2.bitcoin.cz:8332 16/04/2013 04:57:52, checking for stratum...
2013-04-16 04:57:52: Listener for "Default": api2.bitcoin.cz:8332 16/04/2013 04:57:52, started OpenCL miner on platform 0, device 0 (Barts)
2013-04-16 04:57:54: Listener for "Default": api2.bitcoin.cz:8332 16/04/2013 04:57:54, diverted to stratum on stratum.bitcoin.cz:3333
2013-04-16 04:58:35: Listener for "Default": api2.bitcoin.cz:8332 16/04/2013 04:58:35, Verification failed, check hardware! (0:0:Barts, 926f966a)
https://i.imgur.com/PrZBnsd.jpg
Searched around on the forum for similar threads, no solutions that I can see.
AMD-APP-SDK-v2.8-Windows-64 is installed.
Set my GPU to defaults with no OC.
Also tried with phoenix miner and worked but that uses Getwork protocol and I couldn't get it to work with the Stratum proxy. Tried with cgminer and bfgminer, both crash on start after putting in my configs.
Would like if GUIMiner worked though, thanks and I hope for some answers!
2013-04-16 04:57:51: Listener for "Default" started
2013-04-16 04:57:52: Listener for "Default": api2.bitcoin.cz:8332 16/04/2013 04:57:52, checking for stratum...
2013-04-16 04:57:52: Listener for "Default": api2.bitcoin.cz:8332 16/04/2013 04:57:52, started OpenCL miner on platform 0, device 0 (Barts)
2013-04-16 04:57:54: Listener for "Default": api2.bitcoin.cz:8332 16/04/2013 04:57:54, diverted to stratum on stratum.bitcoin.cz:3333
2013-04-16 04:58:35: Listener for "Default": api2.bitcoin.cz:8332 16/04/2013 04:58:35, Verification failed, check hardware! (0:0:Barts, 926f966a)
https://i.imgur.com/PrZBnsd.jpg
Searched around on the forum for similar threads, no solutions that I can see.
AMD-APP-SDK-v2.8-Windows-64 is installed.
Set my GPU to defaults with no OC.
Also tried with phoenix miner and worked but that uses Getwork protocol and I couldn't get it to work with the Stratum proxy. Tried with cgminer and bfgminer, both crash on start after putting in my configs.
Would like if GUIMiner worked though, thanks and I hope for some answers!
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