Verify Confidential Computing is enabled on GPUs

After completing the configuration steps, verify that your GPU is correctly operating in confidential computing mode:

Verify that the nvidia-persistenced service is running with uvm-persistence-mode enabled:
```
ps aux | grep nvidia-persistenced | grep -v grep 
```
The output is similar to the following:
```
nvidia-+ 729 6.2 0.0 5468 1664 ? Ss 12:02 0:10 /usr/bin/nvidia-persistenced \ --user nvidia-persistenced \ --uvm-persistence-mode \ --verbose 
```
Caution: Don't restart the nvidia-persistenced service after enabling uvm-persistence-mode, as this can disrupt the secure connection and require a VM reboot.
Confirm that the GPU is running in confidential computing mode:
```
sudo nvidia-smi conf-compute -f 
```
The output is similar to the following:
```
CC status: ON 
```
Set GPU to ready state after each reboot.
```
sudo nvidia-smi conf-compute -srs 1 
```
Verify Confidential Computing ready state.
```
sudo nvidia-smi conf-compute -grs 
```
If you transition a GPU out of the ready state using nvidia-smi conf-compute -srs 0, reboot the VM instance to return the GPU to the ready state.

The output is similar to the following:
```
Confidential Compute GPUs Ready state: ready 
```

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