How to check versions of CUDA and cuDNN
CUDA Version
Check the version from text file
terminal
$ cat /usr/local/cuda/version.txt
CUDA Version 10.0.130
Check the version via command
terminal
$ nvcc -V
nvcc: NVIDIA (R) Cuda compiler driver
Copyright (c) 2005-2015 NVIDIA Corporation
Built on Tue_Aug_11_14:27:32_CDT_2015
Cuda compilation tools, release 7.5, V7.5.17
I often see this way, but sometimes it does not work properly. As you can see, it shows different versions in these two ways.
Via command, it seems to show the version which written in /usr/bin/nvcc, included in PATH.
terminal
$ /usr/bin/nvcc -V
nvcc: NVIDIA (R) Cuda compiler driver
Copyright (c) 2005-2015 NVIDIA Corporation
Built on Tue_Aug_11_14:27:32_CDT_2015
Cuda compilation tools, release 7.5, V7.5.17
It will show the correct version if you run the command directly.
terminal
$ /usr/local/cuda/bin/nvcc --version
nvcc: NVIDIA (R) Cuda compiler driver
Copyright (c) 2005-2018 NVIDIA Corporation
Built on Sat_Aug_25_21:08:01_CDT_2018
Cuda compilation tools, release 10.0, V10.0.130
nvidia-smi displays something like the version of CUDA, but it seems to only show the version of CUDA that the driver supports.
terminal
$ nvidia-smi
Sat May 23 17:20:28 2020
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 440.33.01 Driver Version: 440.33.01 CUDA Version: 10.2 |
|-------------------------------+----------------------+----------------------+
| 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 V100-PCIE... Off | 00000000:1A:00.0 Off | 0 |
| N/A 43C P0 38W / 250W | 0MiB / 16160MiB | 0% Default |
+-------------------------------+----------------------+----------------------+
| 1 Tesla V100-PCIE... Off | 00000000:1B:00.0 Off | 0 |
| N/A 44C P0 37W / 250W | 0MiB / 16160MiB | 0% Default |
+-------------------------------+----------------------+----------------------+
| 2 Tesla V100-PCIE... Off | 00000000:3E:00.0 Off | 0 |
| N/A 44C P0 37W / 250W | 0MiB / 16160MiB | 3% Default |
+-------------------------------+----------------------+----------------------+
+-----------------------------------------------------------------------------+
| Processes: GPU Memory |
| GPU PID Type Process name Usage |
|=============================================================================|
| No running processes found |
+-----------------------------------------------------------------------------+
参考：How to get the cuda version? | Stack Overflow
cuDNN Version
terminal
$ cat /usr/include/cudnn.h | grep CUDNN_MAJOR -A 2
#define CUDNN_MAJOR 7
#define CUDNN_MINOR 6
#define CUDNN_PATCHLEVEL 5
--
#define CUDNN_VERSION (CUDNN_MAJOR * 1000 + CUDNN_MINOR * 100 + CUDNN_PATCHLEVEL)
#include "driver_types.h"
It seems to show the version via the below command.
(There was no file in my environment.)
terminal
$ cat /usr/local/cuda/include/cudnn.h | grep CUDNN_MAJOR -A 2