Topic: Building a multi GPU system (Read 11110 times)
sorry ... my bad
All Radeon HD 3xxx models support DirectX 10.1 and OpenGL 3.3[10]
http://en.wikipedia.org/wiki/Comparison_of_AMD_graphics_processing_units
OpenGL != OpenCL :-) http://en.wikipedia.org/wiki/Comparison_of_AMD_graphics_processing_units
All Radeon HD 3xxx models support DirectX 10.1 and OpenGL 3.3[10]
http://en.wikipedia.org/wiki/Comparison_of_AMD_graphics_processing_units
http://en.wikipedia.org/wiki/Comparison_of_AMD_graphics_processing_units
Has anyone tried the Foxconn A7DA-S motherboard? http://www.newegg.com/Product/Product.aspx?Item=N82E16813186168
It supports two pci-e cards and has an onboard Radeon HD3300. Just curious if anyone has setup a dual card mining rig using this motherboard plus utilizing the onboard gpu.
I don't think the 3300 could be used for GPU mining - 3XXX's don't support OpenCL. It supports two pci-e cards and has an onboard Radeon HD3300. Just curious if anyone has setup a dual card mining rig using this motherboard plus utilizing the onboard gpu.
Has anyone tried the Foxconn A7DA-S motherboard? http://www.newegg.com/Product/Product.aspx?Item=N82E16813186168
It supports two pci-e cards and has an onboard Radeon HD3300. Just curious if anyone has setup a dual card mining rig using this motherboard plus utilizing the onboard gpu.
It supports two pci-e cards and has an onboard Radeon HD3300. Just curious if anyone has setup a dual card mining rig using this motherboard plus utilizing the onboard gpu.
The 11.4b linux driver seems not ready for prime time yet, i only get 250-301(averaging ~220) mhps per gpu on 6990, my setting is -v -f 0 -w 128.
Yes, very disappointing. I get about 275 per gpu with both 11.3 and 11.4b on my 6990s using DiabloMiner, all stock clocks/etc. I hoping for something more like 350.
The 11.4b linux driver seems not ready for prime time yet, i only get 250-301(averaging ~220) mhps per gpu on 6990, my setting is -v -f 0 -w 128.
What catalyst 11.4 Linux driver?
Oops I meant 11.3. And it works with 11.2 if you write the xorg.conf manually.
Single HD6990 mining with CAL 1.4.1332 (Catalyst 11.3) on Linux
Not true. I mine happily with multiple 6990s with the catalyst 11.4 driver on Linux.
To my surprise, even the older 11.3 works, if you write the xorg.conf manually.
That said I do use a custom CAL miner, as opposed to OpenCL, so perhaps the problems preventing you guys from using the 6990 only affect OpenCL miners.
What catalyst 11.4 Linux driver? To my surprise, even the older 11.3 works, if you write the xorg.conf manually.
That said I do use a custom CAL miner, as opposed to OpenCL, so perhaps the problems preventing you guys from using the 6990 only affect OpenCL miners.
I could plug both cards(5850 & 5770) and now they work perfectly with dummy plug, thank you TenthReality.
It's better mining than have a card useless.
It's better mining than have a card useless.
The 6990 is not supported under Linux yet, even with the 11.4b hotfix.
Probably will be fairly soon; all other 6900 series cards are.
Probably will be fairly soon; all other 6900 series cards are.
Not true. I mine happily with multiple 6990s with the catalyst 11.4 driver on Linux.
To my surprise, even the older 11.3 works, if you write the xorg.conf manually.
That said I do use a custom CAL miner, as opposed to OpenCL, so perhaps the problems preventing you guys from using the 6990 only affect OpenCL miners.
Would love a copy of that, but at that price I don't think I'd ever break even with the cost of 6990s and the insane cost of electricity in California. At least not without a six figure investment in hardware capacity.
The 6990 is not supported under Linux yet, even with the 11.4b hotfix.
Probably will be fairly soon; all other 6900 series cards are.
Probably will be fairly soon; all other 6900 series cards are.
Not true. I mine happily with multiple 6990s with the catalyst
To my surprise, even the older
That said I do use a custom CAL miner, as opposed to OpenCL, so perhaps the problems preventing you guys from using the 6990 only affect OpenCL miners.
Edited to fix catalyst version numbers.
No, you need to modify the one that comes with the PC. Follow this guide: http://www.overclock.net/folding-home-guides-tutorials/384733-30-second-dummy-plug.html
30s? Why so complex? The 5-second VGA Dummy Plug !
Hmm, interesting. I did run across that AMD thread when I ran into a similar problem with my 5970. The system blue screened while I was trying to load a youtube video from within facebook. At the time I was running 11.2. What I did was run driver cleaner and install 11.3 after and update flash, turn off gpu acceleration - so far no crashes. Not sure if it was 11.3 that fixed it or what, but I do think this problem can happen with 5970 too. Has anyone else had this with the 5970 or am I the only one? (win 7 64)
I was using a 5970 until I got this 6990 on Monday, and I upgraded my drivers every month, through 11.3, on Win 7 64. No crashes. The only problem I had (which started long ago) was that with GPU acceleration turned on in Flash, the image on my second monitor would jump up momentarily when a video started (actually not the entire image; there would be a black bar about 1/4 of the way up the screen about 50 pixels tall, and the image above that bar would jump up and back down). Other people had the same problem. I simply turned off GPU acceleration months ago and forgot about it.
Edit: The 6990 does not have that problem, which is nice.
I see. So the crash was most likely caused by something else and not necessarily related to this issue the 6990s are having. I was messing around with the mem clock and fan speed very frequently before the system blue screened. I had the fan locked at 60% and I kept on lowering and raising and lowering the mem clock - trying to find if lowering mem clock affected hashing performance and if there is a "sweet spot" .
But anyways, I hope AMD comes out with a fix, and most of all I hope it's not something that is hardware related.
Hmm, interesting. I did run across that AMD thread when I ran into a similar problem with my 5970. The system blue screened while I was trying to load a youtube video from within facebook. At the time I was running 11.2. What I did was run driver cleaner and install 11.3 after and update flash, turn off gpu acceleration - so far no crashes. Not sure if it was 11.3 that fixed it or what, but I do think this problem can happen with 5970 too. Has anyone else had this with the 5970 or am I the only one? (win 7 64)
I was using a 5970 until I got this 6990 on Monday, and I upgraded my drivers every month, through 11.3, on Win 7 64. No crashes. The only problem I had (which started long ago) was that with GPU acceleration turned on in Flash, the image on my second monitor would jump up momentarily when a video started (actually not the entire image; there would be a black bar about 1/4 of the way up the screen about 50 pixels tall, and the image above that bar would jump up and back down). Other people had the same problem. I simply turned off GPU acceleration months ago and forgot about it.
Edit: The 6990 does not have that problem, which is nice.
Wow what a stupid bug to have. Does this happen with every Catalyst drivers package of only with certain ones? Also have you tried disabling GPU acceleration in flash? I heard that can cause the video card drivers to lock up. Also update flash to the latest version.
It seems to be every driver version, and GPU acceleration in Flash makes no difference (tried both ways). But it's not Flash-related--it's a problem with any video overlay. There's the same problem playing video in any other applications (Windows Media Player, Media Player Classic, etc.).See this thread on the Bitcoin Forum where it has been discussed extensively, along with the official "GPU lockup if running OpenCL and playing video at the same time" thread on the AMD OpenCL forum. It was a problem a year ago with different cards and different drivers, and then resurfaced again now with the 6900 series.
Hmm, interesting. I did run across that AMD thread when I ran into a similar problem with my 5970. The system blue screened while I was trying to load a youtube video from within facebook. At the time I was running 11.2. What I did was run driver cleaner and install 11.3 after and update flash, turn off gpu acceleration - so far no crashes. Not sure if it was 11.3 that fixed it or what, but I do think this problem can happen with 5970 too. Has anyone else had this with the 5970 or am I the only one? (win 7 64)
Wow what a stupid bug to have. Does this happen with every Catalyst drivers package of only with certain ones? Also have you tried disabling GPU acceleration in flash? I heard that can cause the video card drivers to lock up. Also update flash to the latest version.
It seems to be every driver version, and GPU acceleration in Flash makes no difference (tried both ways). But it's not Flash-related--it's a problem with any video overlay. There's the same problem playing video in any other applications (Windows Media Player, Media Player Classic, etc.).See this thread on the Bitcoin Forum where it has been discussed extensively, along with the official "GPU lockup if running OpenCL and playing video at the same time" thread on the AMD OpenCL forum. It was a problem a year ago with different cards and different drivers, and then resurfaced again now with the 6900 series.
So since the 6990 might not be ready for full duty mining yet, should I swap my 5970 (currently in my gaming rig) with the 6990, and then plug in the 5970 and 5870 into my mining rig?
If you're using the 6990 by itself, it will work fine for mining. I'd leave the 5970 in your gaming rig (and do bitcoin mining in the background) since it won't lock up your system while mining if you watch a YouTube video, etc., like the 6990 will.Wow what a stupid bug to have. Does this happen with every Catalyst drivers package of only with certain ones? Also have you tried disabling GPU acceleration in flash? I heard that can cause the video card drivers to lock up. Also update flash to the latest version.
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