HD5770 and HD6770

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Questions and Answers : Windows : HD5770 and HD6770
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Profile JHAPA
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Message 2170 - Posted: 10 Jan 2012, 9:22:33 UTC

Hi all, in my computer i have two GPUs, 1st HD6770 2nd HD5770, so but my boinc dont see second card...Windows see, windows change index number after add of second card, GPU-Z see both card, catalist see both card, but boinc not (actualy 6.12.34)..is there any "black magic" to say boinc, that second card for computing is there? thanks for help
Jhapa
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Message 2173 - Posted: 10 Jan 2012, 12:05:13 UTC - in response to Message 2170.  

Bingo..it works...3 hard resets made repair....
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Message 2174 - Posted: 10 Jan 2012, 12:09:11 UTC - in response to Message 2170.  

Hi all, in my computer i have two GPUs, 1st HD6770 2nd HD5770, so but my boinc dont see second card...Windows see, windows change index number after add of second card, GPU-Z see both card, catalist see both card, but boinc not (actualy 6.12.34)..is there any "black magic" to say boinc, that second card for computing is there? thanks for help
Jhapa


YES THERE IS...you need to add a cc_config.xml file to the Boinc data directory that looks like this:
<cc_config>
<options>
<use_all_gpus>1</use_all_gpus>
</options>
</cc_config>

The file MUST be done in Notepad in Windows, other programs add characters and the file won't work. Second you need to attach a 2nd monitor to the 2nd card on pc startup or make yourself a dummy plug to make it think there is a monitor hooked up to it. You will also probably have to load the AMD software twice, once for each gpu, to make Boinc see both of them. Remember to exit and then restart Boinc after each step as you get it set up.
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Questions and Answers : Windows : HD5770 and HD6770


 
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