running 2 gpu's at the same time
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opamoon
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Message 3049 - Posted: 22 Oct 2009, 16:02:41 UTC

Hello,

in my system (Win Server 2008 x64, BOINC 6.10.13, Catalyst 9.9) i have an ATI FirePro 2450 x2 with two gpu's. How can i activate the second gpu? Or are both gpu's running at the same time on the same work unit?


Thx for your help,

opa

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Message 3072 - Posted: 23 Oct 2009, 14:25:23 UTC - in response to Message 3049.

Hello,

in my system (Win Server 2008 x64, BOINC 6.10.13, Catalyst 9.9) i have an ATI FirePro 2450 x2 with two gpu's. How can i activate the second gpu? Or are both gpu's running at the same time on the same work unit?


Thx for your help,

opa



That almost sounds like as if the second gpu is disabled because there's no monitor attached to it.

Are you using only one monitor ?


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opamoon
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Message 3090 - Posted: 24 Oct 2009, 13:49:42 UTC
Last modified: 24 Oct 2009, 13:50:22 UTC

Hello Crunch3r,

with that card you can use up to 4 monitors. I use two, but connected only on the first output.

Now i have connected one monitor to the first and the other one to the second output ... and I have two gpu's in BOINC Manager.

Thank you very much for your hint.

Bye, opa

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Message 11017 - Posted: 16 Jan 2011, 3:43:19 UTC - in response to Message 3090.
Last modified: 16 Jan 2011, 3:59:23 UTC

How do I get around using two monitors with two ATI cards (both 5700s)? I only want to use one monitor.

If I don't have two monitors pluged in when I start Boinc, one display adapter is disabled.

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Message 11147 - Posted: 26 Jan 2011, 10:53:49 UTC

If you want to use your second GPU without a second monitor, you need a dummy plug for the DVI port.
Here you get the info, how to build your own one in 30sec.
http://www.overclock.net/folding-home-guides-tutorials/384733-30-second-dummy-plug.html

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Message 11822 - Posted: 23 Mar 2011, 17:17:04 UTC

vote for sticky.

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Message 12606 - Posted: 21 Jul 2011, 21:15:27 UTC
Last modified: 21 Jul 2011, 21:16:53 UTC

If I don't have two monitors pluged in when I start Boinc, one display adapter is disabled.

You can also plug in one monitor to two cards, it will ignore the monitor atatched to the card furthest away from slot zero, there will be no clash due to dual connection. Some screens only have one socket, but increasingly now most have two. Doesnt matter if one is HDMI and the other is VGA as its only termination you want, the potential output of the second connection to screen is ignored, and both now available for crunching.

Try and arrange it so that the HDMI output is the one with the live feed to screen.

Regards
Zy

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Message 12617 - Posted: 25 Jul 2011, 16:29:47 UTC

All I did was to expand my desktop onto both graphic cards with or without a monitor attached.

HTH

dunx

P.S. W7 tho' so may be improved over previous versions ?

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Message 12622 - Posted: 26 Jul 2011, 22:15:52 UTC - in response to Message 12617.

All I did was to expand my desktop onto both graphic cards with or without a monitor attached.

HTH

dunx

P.S. W7 tho' so may be improved over previous versions ?


Correct. XP required a monitor or a dummy plug. Win7 has the ability to do it without either. I haven't tried it with Win2008 R2 which is really "Win7 Server" so it may work with that as well.

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Message 15776 - Posted: 28 Dec 2012, 16:38:26 UTC

creating a cc_config.xml file also helps with the following text pasted into it:

<cc_config>
<options>
<use_all_gpus>1</use_all_gpus>
</options>
</cc_config>
_____________________________________________________________

This can be placed in your programdata/BOINC directory. notepad works to make the file.
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