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Title: A friend and I need a hand (Radeon 4xxx OpenCL woes) Post by: TurnThePhage on June 18, 2011, 08:57:37 PM Hi, all. I was originally hoping to post this in http://forum.bitcoin.org/index.php?topic=3878.0 (http://forum.bitcoin.org/index.php?topic=3878.0) but the newbie restriction is in place so I'm hoping I'll still get some help if I post it here.
My friend and I are both attempting to start mining via the GUI miner linked, but we can only use our CPU's--neither his Radeon 4850 nor my Radeon 4870 appear on the miner's drop-down list for OpenCL-compatible devices. I've been doing some research this morning on OpenCL and ATI cards; apparently, the Radeon 4xxx series only has "beta-level" support for OpenCL, according to this list of compatible systems, etc. (http://developer.amd.com/sdks/AMDAPPSDK/pages/DriverCompatibility.aspx) I'd think that beta-level support would be sufficient to mine, but I've downloaded and installed the 64-bit Windows 7 AMD APP (AKA ATI Stream) (http://developer.amd.com/sdks/AMDAPPSDK/downloads/Pages/default.aspx) multiple times, to no avail--the mining application still fails to recognize the 4870, as does this GPU Caps viewer someone recommended in an old post I found. (http://www.ozone3d.net/gpu_caps_viewer/index.php#download) Bitcoins in general seem like a fun prospect and, hopefully, a lucrative one, but I think I've exhausted all of my options. So, wise bitcoin sages: Are my friend and I SOL? Or are we still missing some vital driver or program? Thanks in advance for any help you guys can give. Title: Re: A friend and I need a hand (Radeon 4xxx OpenCL woes) Post by: Agozyen on June 19, 2011, 01:04:50 AM I use a 4870 X2 and when I first installed Bitcoin and GUIMiner it recognized my card right off. Then I started tinkering with things. I downloaded ATI Stream 2.2 and that borked things up. The thing is I don't ever remember installing Stream to begin with, separately that is. It may have installed along with Catalyst or something. Anyway, after GUIMiner stopped recognizing my hardware I had to uninstall everything related to ATI and reinstall. So, get the latest drivers, uninstall your current CCC and Stream, resinstall CCC with latest drivers and see if that works.
Title: Re: A friend and I need a hand (Radeon 4xxx OpenCL woes) Post by: OCedHrt on June 19, 2011, 01:34:56 AM For best chances, you should use the ATI uninstaller and remove all the old versions first and then reinstall the newest Catalyst pack. This includes OpenCL. Be warned though after I installed 11-6, worksizes < 256 no longer work.
Title: Re: A friend and I need a hand (Radeon 4xxx OpenCL woes) Post by: TurnThePhage on June 19, 2011, 02:52:14 AM Reinstalling my driver to 11.6 worked like a charm; the miner now recognizes "ATI RV770" so I think I'm good.
EDIT: Okay, new problem. I ran the miner with -w128 as the only flag; it then used all of my GPU until it got to 118 C and crashed my computer. Now, every time I attempt to start mining, poclbm.exe crashes. No pain, no gain, I suppose. Title: Re: A friend and I need a hand (Radeon 4xxx OpenCL woes) Post by: OCedHrt on June 19, 2011, 07:46:25 AM Reinstalling my driver to 11.6 worked like a charm; the miner now recognizes "ATI RV770" so I think I'm good. EDIT: Okay, new problem. I ran the miner with -w128 as the only flag; it then used all of my GPU until it got to 118 C and crashed my computer. Now, every time I attempt to start mining, poclbm.exe crashes. No pain, no gain, I suppose. Use worksize 256. I think it's a problem with 11-6 catalyst. Anything less than 256 and each miner only works once without vectors and once with vectors. |