soap3-dp using the -c device id option with multiple gpus

[lankage]

Has anyone managed to get soap3-dp's -c option to function correctly? If so what is the format?

-c [GPU device ID] Specify the GPU device for running SOAP3-dp;

2 GeForce GTX 780 Off | 0000:07:00.0 N/A

I've tried -c 7 , -c 0000:07:00.0 , -c 07:00.0 to no avail. soap3-dp just uses the video card with the lowest bus-id regardless.

I have tried various formats of the device identifier based on the nvidia-smi output bus id.

[lankage]

Nevermind - SOLVED

soap3-dp uses the device id as assigned by the CUDA driver installed.
in my /usr/local/cuda/samples ran ./deviceQuery
CUDA shows:
deviceQuery, CUDA Driver = CUDART, CUDA Driver Version = 7.0, CUDA Runtime Version = 6.0,
NumDevs = 3, Device0 = GeForce GTX 980, Device1 = GeForce GTX 980, Device2 = GeForce GTX 780
Result = PASS
device ids assigned 0 - 2.

soap3-dp -c <0,1 or 2>

[HenrivdGeest]

Thanks for your reply, and fix!
How does soap3 anyway performs compared to soap2 on cpu?