Hi All:
The "simpleMultipleDevice" seems wrongly written in the SDK sample, for example, the "input" and "output" is reversed in the kernel.
Also it seems I can only use GPU[0] to do calculation, someone told me to disable crossfire, I did it , then I can only find two GPUs in my system.(Used to be four).
Here is my sistem:
CPU: i7, Operatiing system: win 7 64 bit
GPU: two HD 5970.
This problem has bothered me for a long time, any explanations on this?
Thanks a lot.
ThomasUCF
this is bug in the driver. they are working to fix it.
hi thomas_UCF,
As of now, AMD does not support the other devices except deice[0] of your gpu for computation purposes.
So for now, you can do computation only only on the device[0] of both your GPUs.
And thanks for reporting the bug in the sample.Its great help.
Hi Himanshu:
Thanks, your comments are also great help to me.
Thomas
Hi himanshu:
I use the device[0] on both of my 5970s, do I have to use Linux system?
When I turn off the corssfire and remove the ribbon which connect the two GPUs, if I attach screen to one GPU, the device information says I only have two GPUs, when I attach screen to both GPUs, the sample code can not run.
So I do I use both of the device[0] in windows system?
Thanks a lot.
ThomasUCF
Hi thomasUCF,
AFAIK, device[0] of both GPUs should run in windows.Which sample code are you running.Are you using latest sdk and drivers?
Thank you. Can you tell me approximately how long will the bug be solved?