如何解决修复torch.cuda.is_available为False时
如何将torch.cuda.is_available()的结果更改为True？
这些是我可以提供的有关系统的一些信息：
$ python
Python 3.6.7 | packaged by conda-forge | (default,Nov 6 2019,16:19:42)
[GCC 7.3.0] on linux
Type "help","copyright","credits" or "license" for more information.
>>> import torch
>>> torch.version.cuda
'8.0.61'
>>> torch.cuda.is_available()
False
>>> torch.backends.cudnn.enabled
True
>>> torch.__version__
'1.0.0.dev20190328'
和
$ uname -a
Linux goku.bu.edu 3.10.0-1127.18.2.el7.x86_64 #1 SMP Sun Jul 26 15:27:06 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
$ lsb_release -a
LSB Version: :core-4.1-amd64:core-4.1-noarch
Distributor ID: CentOS
Description: CentOS Linux release 7.8.2003 (Core)
Release: 7.8.2003
Codename: Core
$ 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
$ cat /usr/local/cuda/version.txt
CUDA Version 10.0.130
$ nvidia-smi
Sat Sep 19 00:04:00 2020
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 450.51.06 Driver Version: 450.51.06 CUDA Version: 11.0 |
|-------------------------------+----------------------+----------------------+
| GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |
| | | MIG M. |
|===============================+======================+======================|
| 0 GeForce GTX 108... Off | 00000000:05:00.0 Off | N/A |
| 0% 24C P8 12W / 250W | 55MiB / 11178MiB | 0% Default |
| | | N/A |
+-------------------------------+----------------------+----------------------+
| 1 GeForce GTX 108... Off | 00000000:06:00.0 Off | N/A |
| 0% 27C P8 12W / 250W | 2MiB / 11178MiB | 0% Default |
| | | N/A |
+-------------------------------+----------------------+----------------------+
+-----------------------------------------------------------------------------+
| Processes: |
| GPU GI CI PID Type Process name GPU Memory |
| ID ID Usage |
|=============================================================================|
| 0 N/A N/A 2637 G /usr/bin/X 39MiB |
| 0 N/A N/A 2903 G /usr/bin/gnome-shell 12MiB |
+-----------------------------------------------------------------------------+
关于GPU：
$ lspci | grep ' VGA ' | cut -d" " -f 1 | xargs -i lspci -v -s {}
05:00.0 VGA compatible controller: NVIDIA Corporation GP102 [GeForce GTX 1080 Ti] (rev a1) (prog-if 00 [VGA controller])
Subsystem: eVga.com. Corp. Device 6598
Flags: bus master,fast devsel,latency 0,IRQ 88,NUMA node 0
Memory at fa000000 (32-bit,non-prefetchable) [size=16M]
Memory at c0000000 (64-bit,prefetchable) [size=256M]
Memory at d0000000 (64-bit,prefetchable) [size=32M]
I/O ports at e000 [size=128]
[virtual] Expansion ROM at fb000000 [disabled] [size=512K]
Capabilities: <access denied>
Kernel driver in use: nvidia
Kernel modules: nouveau,nvidia_drm,nvidia
06:00.0 VGA compatible controller: NVIDIA Corporation GP102 [GeForce GTX 1080 Ti] (rev a1) (prog-if 00 [VGA controller])
Subsystem: eVga.com. Corp. Device 6598
Flags: bus master,IRQ 89,NUMA node 0
Memory at f8000000 (32-bit,non-prefetchable) [size=16M]
Memory at a0000000 (64-bit,prefetchable) [size=256M]
Memory at b0000000 (64-bit,prefetchable) [size=32M]
I/O ports at d000 [size=128]
[virtual] Expansion ROM at f9000000 [disabled] [size=512K]
Capabilities: <access denied>
Kernel driver in use: nvidia
Kernel modules: nouveau,nvidia
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