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Message boards : Graphics cards (GPUs) : Vista 64 bit. Dual 8800GTS 512megs only 1 crunching.

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Dorsilfin
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Message 2894 - Posted: 9 Oct 2008 | 0:33:55 UTC
Last modified: 9 Oct 2008 | 0:34:07 UTC

2 days ago I was running my win XP pro SP3 with both my 8800's crunching away no problem.

I have since upgraded the system to Vista 64 bit.

No matter what I try im still only getting 1 GPU Crunching.

Ive installed BOINC 6.3.10 for 64 bit.
I installed the CUDA drivers
I have Un SLI'ed the cards.

and it still just runs one.

Any insite? Ideas?

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Profile K1atOdessa
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Message 2895 - Posted: 9 Oct 2008 | 1:14:11 UTC - in response to Message 2894.

2 days ago I was running my win XP pro SP3 with both my 8800's crunching away no problem.

I have since upgraded the system to Vista 64 bit.

No matter what I try im still only getting 1 GPU Crunching.


I believe Vista requires that both video cards be hooked up to a monitor or "tricked" into thinking they are. I am not sure of the thread, but there is one that details how to create a "fake" monitor using a DVI->VGA adapter.

http://www.gpugrid.net/forum_thread.php?id=399

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Profile [SETI.USA]Tank_Master
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Message 2897 - Posted: 9 Oct 2008 | 1:43:18 UTC - in response to Message 2895.

have you extended the desktop onto the second card?

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Dorsilfin
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Message 2898 - Posted: 9 Oct 2008 | 1:43:34 UTC - in response to Message 2895.

Thanks! that thread got me going, Just had to hook up another monitor and reboot and it fired right up. strange things this vista does

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naja002
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Message 2900 - Posted: 9 Oct 2008 | 3:28:12 UTC - in response to Message 2898.

Keep in mind that if You don't leave the 2nd monitor hooked up when You reboot--You'll have the same problem again. If you don't need a 2nd monitor hooked all the time--that's the benefit of the vga/dvi dummy.....

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Message boards : Graphics cards (GPUs) : Vista 64 bit. Dual 8800GTS 512megs only 1 crunching.

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