Checking which kernel driver in use for CUDA.

This is useful if you are diagnosing the driver that is being used by your Nvidia Card. This was performed on CentOS 6.7

List created "NVIDIA devices":

# ls /dev/nv*
/dev/nvram 

Check the supported NVIDIA card:

[root@comp1 ~]# lspci -d "10de:*" -v
84:00.0 3D controller: NVIDIA Corporation GK110BGL [Tesla K40m] (rev a1)
Subsystem: NVIDIA Corporation Device 097e
Flags: bus master, fast devsel, latency 0, IRQ 64
Memory at c9000000 (32-bit, non-prefetchable) [size=16M]
Memory at 3c400000000 (64-bit, prefetchable) [size=16G]
Memory at 3c3fe000000 (64-bit, prefetchable) [size=32M]
Capabilities: [60] Power Management version 3
Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+
Capabilities: [78] Express Endpoint, MSI 00
Capabilities: [100] Virtual Channel
Capabilities: [128] Power Budgeting <?>
Capabilities: [420] Advanced Error Reporting
Capabilities: [600] Vendor Specific Information: ID=0001 Rev=1 Len=024 <?>
Capabilities: [900] #19
Kernel driver in use: nvidia
Kernel modules: nvidia, nouveau, nvidiafb