我知道有很多关于这个问题的主题，但它对我来说不起作用:(
我目前正在学校学习人工智能，我需要将“keras”库与 tensorflow 库结合使用。但这个过程很长，我刚刚发现我可以使用 GPU 而不是 CPU 来加速这个过程。我有一台 GTX 950m，所以我的显卡与 CUDA 兼容。
我的问题：当我想使用 tensorflow-gpu 时，出现此错误：
Using TensorFlow backend.
Traceback (most recent call last):
File "C:\Users\alex\AppData\Local\Programs\Python\Python37\lib\site-packages\tensorflow\python\pywrap_tensorflow.py", line 58, in <module>
from tensorflow.python.pywrap_tensorflow_internal import *
File "C:\Users\alex\AppData\Local\Programs\Python\Python37\lib\site-packages\tensorflow\python\pywrap_tensorflow_internal.py", line 28, in <module>
_pywrap_tensorflow_internal = swig_import_helper()
File "C:\Users\alex\AppData\Local\Programs\Python\Python37\lib\site-packages\tensorflow\python\pywrap_tensorflow_internal.py", line 24, in swig_import_helper
_mod = imp.load_module('_pywrap_tensorflow_internal', fp, pathname, description)
File "C:\Users\alex\AppData\Local\Programs\Python\Python37\lib\imp.py", line 242, in load_module
return load_dynamic(name, filename, file)
File "C:\Users\alex\AppData\Local\Programs\Python\Python37\lib\imp.py", line 342, in load_dynamic
return _load(spec)
ImportError: DLL load failed: Le module spécifié est introuvable.
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:\Users\alex\Desktop\test\module1.py", line 10, in <module>
import keras
File "C:\Users\alex\AppData\Local\Programs\Python\Python37\lib\site-packages\keras\__init__.py", line 3, in <module>
from . import utils
File "C:\Users\alex\AppData\Local\Programs\Python\Python37\lib\site-packages\keras\utils\__init__.py", line 6, in <module>
from . import conv_utils
File "C:\Users\alex\AppData\Local\Programs\Python\Python37\lib\site-packages\keras\utils\conv_utils.py", line 9, in <module>
from .. import backend as K
File "C:\Users\alex\AppData\Local\Programs\Python\Python37\lib\site-packages\keras\backend\__init__.py", line 89, in <module>
from .tensorflow_backend import *
File "C:\Users\alex\AppData\Local\Programs\Python\Python37\lib\site-packages\keras\backend\tensorflow_backend.py", line 5, in <module>
import tensorflow as tf
File "C:\Users\alex\AppData\Local\Programs\Python\Python37\lib\site-packages\tensorflow\__init__.py", line 24, in <module>
from tensorflow.python import pywrap_tensorflow # pylint: disable=unused-import
File "C:\Users\alex\AppData\Local\Programs\Python\Python37\lib\site-packages\tensorflow\python\__init__.py", line 49, in <module>
from tensorflow.python import pywrap_tensorflow
File "C:\Users\alex\AppData\Local\Programs\Python\Python37\lib\site-packages\tensorflow\python\pywrap_tensorflow.py", line 74, in <module>
raise ImportError(msg)
ImportError: Traceback (most recent call last):
File "C:\Users\alex\AppData\Local\Programs\Python\Python37\lib\site-packages\tensorflow\python\pywrap_tensorflow.py", line 58, in <module>
from tensorflow.python.pywrap_tensorflow_internal import *
File "C:\Users\alex\AppData\Local\Programs\Python\Python37\lib\site-packages\tensorflow\python\pywrap_tensorflow_internal.py", line 28, in <module>
_pywrap_tensorflow_internal = swig_import_helper()
File "C:\Users\alex\AppData\Local\Programs\Python\Python37\lib\site-packages\tensorflow\python\pywrap_tensorflow_internal.py", line 24, in swig_import_helper
_mod = imp.load_module('_pywrap_tensorflow_internal', fp, pathname, description)
File "C:\Users\alex\AppData\Local\Programs\Python\Python37\lib\imp.py", line 242, in load_module
return load_dynamic(name, filename, file)
File "C:\Users\alex\AppData\Local\Programs\Python\Python37\lib\imp.py", line 342, in load_dynamic
return _load(spec)
ImportError: DLL load failed: Le module spécifié est introuvable.
Failed to load the native TensorFlow runtime.
See https://www.tensorflow.org/install/errors
for some common reasons and solutions. Include the entire stack trace
above this error message when asking for help.
当我只使用 tensorflow 时，它可以工作，但使用 tensorflow-gpu 时，我遇到了错误，而且无法纠正！
我尝试使用 CUDA10 和 CUDA9，但问题仍然存在。似乎我的电脑不想使用 GPU...有人能帮我吗？
PS: pip freeze 给我：
Keras==2.2.4
Keras-Applications==1.0.7
Keras-Preprocessing==1.0.9
tensorboard==1.12.2
tensorflow-estimator==1.13.0rc0
tensorflow-gpu==1.13.0rc1
答案1
看起来您缺少一个 DLL。您必须问自己，它在哪里寻找该 DLL？答案是您的 PATH 变量。
您需要添加cuda\bin子目录以便 Windows 找到 DLL（不幸的是，DLL 加载代码不会搜索子目录）。