Message boards :
Number crunching :
dual 6970s
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Author | Message |
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Send message Joined: 1 Feb 13 Posts: 48 Credit: 66,724,440 RAC: 0 |
I had difficulties getting the driver to load . installed one then she loaded fine . will I need an XML file to get 2 to run at the same time and can I run 2 work units per GPU ... and is a dummy plug needed ? diagram for it too . |
Send message Joined: 13 Oct 16 Posts: 112 Credit: 1,174,293,644 RAC: 0 |
I don't run dual 6970s in 1 machine, but I have 2 running on separate machines. And one machine has no monitor attached, so I don't think a dummy plug is needed. I have Catalyst 15.7.1 and use Sapphire Trixx to set 925 core, 1375 mem, 1.200 volt, +20% power and fans @ 60%. I run 2 WUs per card and temps stay low to mid 70s C. You might need to run an app_config.xml file to tell it 2 WUs per card. Also may need to add a line in the cc_config.xml file for <use_all_gpus>1</use_all_gpus> Here is my app_config.xml for both machines running 2 WUs on a 6970: <app_config> <app> <name>milkyway</name> <gpu_versions> <gpu_usage>.50</gpu_usage> <cpu_usage>.25</cpu_usage> </gpu_versions> </app> </app_config> And here is my cc_config.xml as well for both machines: <cc_config> <options> <report_results_immediately>1</report_results_immediately> <start_delay>30</start_delay> <use_all_gpus>1</use_all_gpus> <ncpus>2</ncpus> </options> <log_flags> </log_flags> </cc_config> |
Send message Joined: 8 May 09 Posts: 3323 Credit: 520,900,698 RAC: 38,000 |
I had difficulties getting the driver to load . installed one then she loaded fine . will I need an XML file to get 2 to run at the same time and can I run 2 work units per GPU ... and is a dummy plug needed ? diagram for it too . Sometimes you need a dummy plug and sometimes you don't but here's how to make your own... http://www.overclock.net/t/384733/the-30-second-dummy-plug |
Send message Joined: 1 Feb 13 Posts: 48 Credit: 66,724,440 RAC: 0 |
Super thanks Guys I finally got my driver to load and then put in the second card . my 7800 gpu turns out a work unit in 3500 sec . this dual syytem is doing one every 120 secs with no xml yet . so I am very happy |
Send message Joined: 13 Oct 16 Posts: 112 Credit: 1,174,293,644 RAC: 0 |
That's great! 2 WUs per card is the sweet spot for the 6970 after much trial and error I found. I think you'll be more than happy. I run mine at 925/1375 with output of 300-330k ppd. See my previous post below for my settings. On 1 machine I don't leave any free cores since it's only a dual core rig and I run WCG on it as well. The other is a Q6600 like yours and I leave 2 cores free since it's a work PC and it runs WCG too. I see you're teamless...Looking me up ;) Good luck and happy crunching! |
Send message Joined: 8 Jan 11 Posts: 8 Credit: 62,980,926 RAC: 0 |
After a long absence from MW since my 6970 didn't work I figured I'd give it another shot. It seem to be working now but my GPU seems to run at 98% for 5 seconds then off for 5. Is there something I can do to correct this, I'm on a Windows 10 64 bit machine? |
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