Problem Running Dual GPU Now

[lechumbl]

Hi all,

On my wife's system, we have been running 9800 GX2 dual core and dual folding for some time with XP 64.
I installed Windows 7 Home, and now can not run both cores at the same time.

If I run GPU 1 and not GPU2, it runs fine. When I start GPU2, it gives me an "UNSTABLE MACHINE" error.
When I run GPU2 by itself, it runs fine, then I start GPU1 and again, "UNSTABLE MACHINE" error.

I have double checked all settings and perimeters and software, and all seems to be correct.

Any suggestions?

Take care..........

[stoanee]

Hmmmm, clean 7 install or upgrade? Was folding reinstalled or was it brought along with upgrade?

[lowfat]

You need to have a monitor or a dummy plug plugged in to the second DVI port.

[lechumbl]

Hi all,

It is a clean install for Windows 7, clients are on D drive, which did not change.

I do have a dummy plug in the second DVI Port, as was with XP 64.

Take care..........

[lowfat]

you have -forcegpu_G80 flags added to both? Have SLI/multi GPU disabled? And have extended the desktop so that Win7 shows two displays in use?

[geokilla]

Originally Posted by lowfat

you have -forcegpu_G80 flags added to both? Have SLI/multi GPU disabled? And have extended the desktop so that Win7 shows two displays in use?

Um, SLI enabled or disabled doesn't matter if I remember correctly with the later drivers....

[lechumbl]

Hi lowfat,

As I stated in my first post, it is set up identical to the XP 64 setup which works very well.
I did not have those flags set in XP 64.
Why do they need to be set in Windows 7 64?

Take care.........

[Arinoth]

-advmethods -forcegpu nvidia_g80 -gpu 0
-advmethods -forcegpu nvidia_g80 -gpu 1

Also having 2 folders, one for each core in user\roaming

This allows you to fold with or without SLI enabled and without a dummy plug

[lowfat]

Originally Posted by Arinoth

-advmethods -forcegpu nvidia_g80 -gpu 0
-advmethods -forcegpu nvidia_g80 -gpu 1

Also having 2 folders, one for each core in user\roaming

This allows you to fold with or without SLI enabled and without a dummy plug

First part is correct, but you do need SLI disabled.

Originally Posted by geokilla

Um, SLI enabled or disabled doesn't matter if I remember correctly with the later drivers....

SLI needs to be disabled w/ 9800GX2s (and possibly GTX295's). All other cards SLI can remain enabled.

[lechumbl]

Hi all,

OK, put in the flags and it told me the flags were invalid.
I took out the -forcegpu nvidia_g80 flag and it loaded, the GPU1, but not the GPU 2, same UNSTABLE_MACHINE error.

Any other thoughts?

Take care..........