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max in montreal (OP)
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August 20, 2011, 02:25:15 AM
Last edit: August 20, 2011, 04:13:17 PM by max in montreal |
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I have 4 cards on my MSI 890FXA-GD70. Using windows 7 32 bit.
5870 -->GPU 0
5970 -->GPU 1 and 2
5970 -->GPU 3 and 4
5970 -->GPU 5 and 6
I could mine with any 5 gpu, when I add the other 1 or 2 it will decrease the hash rate on the others. Is there a setting in the mobo bios that I should adjust?
Help me solve this problem and 2 bitcoins are yours for the taking!
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BkkCoins
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August 20, 2011, 03:46:19 AM |
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I once had a similar problem. It seemed to be linked to too much cpu usage for me. When I reverted to 11.6 driver it went away and cards stopped affecting each other. If you seem to have high cpu usage and use later than 11.6 (which has a cpu bug) then reverting may help.
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max in montreal (OP)
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August 20, 2011, 05:33:51 AM |
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Edited my post, I am using windows 7.
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bcforum
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August 20, 2011, 03:10:48 PM |
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I could mine with any 5 gpu, when I add the other 1 or 2 it will decrease the hash rate on the others. Is there a setting in the mobo bios that I should adjust?
Check your resource monitor and see if you are: 1) running out of CPU 2) running out of memory 3) running out of network bandwidth (unlikely) |
If you found this post useful, feel free to share the wealth: 1E35gTBmJzPNJ3v72DX4wu4YtvHTWqNRbM
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max in montreal (OP)
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August 20, 2011, 04:11:56 PM |
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Yes the CPU is at 100%, but i thought this was a CCC bug. I am running windows 7, and do not want to switch to Linux, especially since CCC can now manage 8 GPU. The memory usage is not 100%.
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k9quaint
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Activity: 1190
Merit: 1000
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August 20, 2011, 04:57:56 PM |
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There is a version of Catalyst drivers that do not have the 100% CPU bug. Catalyst version 11.6 works on LInux.
On my windows box, I have driver version 8.861 from 5/24/2011 and it is barely using any CPU at all. I believe that driver is from the 11.6 Catalyst package as well.
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Elder III
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August 20, 2011, 05:15:23 PM |
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Which drivers are you using? I find that the 11.6 drivers work the best; 11.6b if you need to be able to run more than 4... I have not done so well with 11.7 or 11.8 myself.
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max in montreal (OP)
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August 20, 2011, 05:18:20 PM |
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There is a version of Catalyst drivers that do not have the 100% CPU bug. Catalyst version 11.6 works on LInux.
On my windows box, I have driver version 8.861 from 5/24/2011 and it is barely using any CPU at all. I believe that driver is from the 11.6 Catalyst package as well.
What is the max GPU limit with these drivers? |
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max in montreal (OP)
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August 20, 2011, 05:18:51 PM |
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Which drivers are you using? I find that the 11.6 drivers work the best; 11.6b if you need to be able to run more than 4... I have not done so well with 11.7 or 11.8 myself.
I am using the latest, 11.8. |
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CanaryInTheMine
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August 20, 2011, 06:22:19 PM |
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I have 4 cards on my MSI 890FXA-GD70. Using windows 7 32 bit.
5870 -->GPU 0
5970 -->GPU 1 and 2
5970 -->GPU 3 and 4
5970 -->GPU 5 and 6
I could mine with any 5 gpu, when I add the other 1 or 2 it will decrease the hash rate on the others. Is there a setting in the mobo bios that I should adjust?
Help me solve this problem and 2 bitcoins are yours for the taking!
What are the clock/memory settings and what PSU do you have these connected to? |
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max in montreal (OP)
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August 20, 2011, 06:44:33 PM |
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In windows they are all at the defaults, I wanted to get them all running before I tweak.
I am using 2 PSU, one is an antec earthwatts 750, the other is an ultra x 3 1000 watt. 1000 watt is for 2 X 5970 and the 750 runs the mobo, 1 X 5970 and 1 X 5870.
Using Linuxcoin everything is seen and runs fine. So I think its not a mobo or power issue.
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CanaryInTheMine
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Activity: 2352
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between a rock and a block!
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August 20, 2011, 06:48:59 PM |
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In windows they are all at the defaults, I wanted to get them all running before I tweak.
I am using 2 PSU, one is an antec earthwatts 750, the other is an ultra x 3 1000 watt. 1000 watt is for 2 X 5970 and the 750 runs the mobo, 1 X 5970 and 1 X 5870.
Using Linuxcoin everything is seen and runs fine. So I think its not a mobo or power issue.
uninstall CCC. you only need the drivers and SDK. |
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max in montreal (OP)
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August 20, 2011, 08:18:59 PM |
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uninstalling ccc did not help. I am going to install 11.6b.
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CanaryInTheMine
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Activity: 2352
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between a rock and a block!
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August 20, 2011, 08:24:32 PM |
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uninstalling ccc did not help. I am going to install 11.6b.
if your CPU is multicore, try setting affinity of miners to different cores. iff this is related to CPU issues. |
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CanaryInTheMine
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between a rock and a block!
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August 20, 2011, 08:34:54 PM |
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sempron 140
ohhhh.... unless you have a bit more powerfull chip to at least try to rule out if cpu is an issue i'm not sure what else to suggest... the CPU bug is nasty.... |
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k9quaint
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August 20, 2011, 08:42:10 PM |
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Change your drivers. Try 11.6. Make sure you uninstall the current drivers before you install the next version.
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max in montreal (OP)
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August 20, 2011, 08:51:07 PM |
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11.6b can only see 4 gpu...  |
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k9quaint
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August 20, 2011, 09:26:48 PM |
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11.6b can only see 4 gpu... Do you have dummy plugs installed on all the cards? |
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max in montreal (OP)
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August 20, 2011, 10:22:36 PM |
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on 3 cards yes, the 4th is my monitor. I can see all cards in CCC.
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