You will need to open a SSH connection to the ESXi host to run these commands.
First lets confirm ESXi can pick up the GPU.
nvidia-smi
The above results show there is a NVIDIA GRID K1 GPU installed.
However, this does not confirm that the GPU is being used.
Confirm if Xorg Service is Running:
/etc/init.d/xorg status
If the service is not running, we can attempt to start the service:
/etc/init.d/xorg start
if the service is started, we can run the following command to list the virtual machines which are using the GPU memory
gpuvm
If successful we should see a list similar to below:
Keep an eye out for my next post on the installing the NVIDIA GPU drivers on ESXi 5.5.
Adnan Iqbal 