Running on 4 GPUs and acceesing the 4th GPU

Hi All,
Thanks again for your support of the caffe for windows.

I just downloaded yesterday (Match-6-2016) the code by the command
git clone https://github.com/happynear/caffe-windows.git

I have been using caffe windows for some time (old version of happynear) and recently the IT installed in our server 4 GPU (Titan X) which we purchased from few stores recently.

Now the issue is that the operating system recognized all of them at slot 0,1,2 and 3, but the caffe does not recognize the 3rd one using the command caffe device_query –gpu 3. (all other GPUs are responding to the caffe device_query –gpu command).

Additionally, the command
caffe train –solve -gpu all

does not work and by looking at the log file it seems that it accesses only the first 3 GPUs

I0307 06:47:59.012663 5200 caffe.cpp:185] Using GPUs 0, 1, 2
I0307 06:47:59.028288 5200 caffe.cpp:190] GPU 0: GeForce GTX TITAN X
I0307 06:47:59.028288 5200 caffe.cpp:190] GPU 1: GeForce GTX TITAN X
I0307 06:47:59.028288 5200 caffe.cpp:190] GPU 2: GeForce GTX TITAN X

and it fail and the end.

Note that the command
caffe train –solve -gpu 0,1
does work.

My IT guy double check and told me that the firmwares are different across the GPUs – does that cause the error?

I more than happy if you can help me to solve this problem,

Thanks very much,

Jhon Smothdir