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查看 nvidia 显卡

$ lspci | grep -i nvidia
02:00.0 3D controller: nVidia Corporation Device 1023 (rev a1)
03:00.0 3D controller: nVidia Corporation Device 1023 (rev a1)

$ lspci -v -s 02:00.0
02:00.0 3D controller: nVidia Corporation Device 1023 (rev a1)
	Subsystem: nVidia Corporation Device 097e
	Flags: bus master, fast devsel, latency 0, IRQ 96
	Memory at de000000 (32-bit, non-prefetchable) [size=16M]
	Memory at 381800000000 (64-bit, prefetchable) [size=400000000]
	Memory at 381c00000000 (64-bit, prefetchable) [size=32M]
	Capabilities: <access denied>
	Kernel driver in use: nvidia
	Kernel modules: nvidia, nouveau, nvidiafb

或者 nvidia-smi

Thu Feb 23 11:49:10 2017
+------------------------------------------------------+
| NVIDIA-SMI 352.39     Driver Version: 352.39         |
|-------------------------------+----------------------+----------------------+
| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|===============================+======================+======================|
|   0  Tesla K40m          Off  | 0000:02:00.0     Off |                    0 |
| N/A   19C    P8    20W / 235W |     22MiB / 11519MiB |      0%      Default |
+-------------------------------+----------------------+----------------------+
|   1  Tesla K40m          Off  | 0000:03:00.0     Off |                    0 |
| N/A   34C    P0   116W / 235W |   7194MiB / 11519MiB |     96%      Default |
+-------------------------------+----------------------+----------------------+

+-----------------------------------------------------------------------------+
| Processes:                                                       GPU Memory |
|  GPU       PID  Type  Process name                               Usage      |
|=============================================================================|
|    1     21130    C   ./build/tools/caffe                           5225MiB |
|    1     24082    C   ./build/tools/caffe                           1940MiB |
+-----------------------------------------------------------------------------+