运行支持 GPU 的 TensorFlow

http://tensorflow.org/

https://github.com/tensorflow/tensorflow

https://github.com/jikexueyuanwiki/tensorflow-zh

以下只支持 Windows 10 + & 64 位 Installation 方法,GPU:NVIDIA® GPU 1070。

 1、确认安装哪种 TensorFlow?

>>仅支持 CPU 的 TensorFlow 安装时间在 5~ 10 分钟。

>>支持 GPU 的 TensorFlow 运行速度和性能比在 CPU 上快,但需要安装  NVIDIA® GPU。而且需要安装NVIDA软件:

  • CUDA® 工具包 9.0(附加CUDA 环境变量%PATH% )及相关联的 NVIDIA 驱动。
  • cuDNN v7.0(附加 cuDNN DLL 的目录到 %PATH% 环境变量;cuDNN 版本必须完全匹配:如果无法找到 cuDNN64_7.dll,TensorFlow 就不会加载。要使用不同版本的 cuDNN,必须从源代码构建)。
  • GPU 卡(CUDA 计算能力3.0+)。

2、如何安装 TensorFlow ?

>>原生"pip"(原生 pip并不在隔离容器中运行,因此会干扰系统中的其他 Python,我是在 VS 2017 的 Python环境中配置 pip 环境变量安装的)。

请使用 python 3.5.x 以上版本安装 TensorFlow。

C:\> pip3 install --upgrade tensorflow
//安装 GPU 版本的 TensorFlow
C:\> pip3 install --upgrade tensorflow-gpu

>>Anaconda(使用 conda 创建一个虚拟环境,在Anaconda内部使用 pip install 命令安装,Tensorflow 官方不支持、测试、维护 cona 包,有风险)。

安装 Anaconda

//创建名为 tensorflow 的 conda 环境
C:> conda create -n tensorflow pip python=3.5 
//激活 conda 环境
C:> activate tensorflow
 (tensorflow)C:>  # Your prompt should change
//在 conda 环境中安装仅支持 CPU 的 TensorFlow
(tensorflow)C:> pip install --ignore-installed --upgrade tensorflow 
//安装 GPU 版本的 TensorFlow
(tensorflow)C:> pip install --ignore-installed --upgrade tensorflow-gpu

3、验证安装

$ python

>>>import tensorflow as tf
>>> hello = tf.constant('Hello, TensorFlow!')
>>> sess = tf.Session()
>>>print(sess.run(hello))
Output:Hello, TensorFlow! 成功搞定。

Stack Overflow 安装错误消息及链接:

1、41007279

[...\stream_executor\dso_loader.cc] Couldn't open CUDA library nvcuda.dll

2、41007279

[...\stream_executor\cuda\cuda_dnn.cc] Unable to load cuDNN DSO

3、42006320

ImportError: Traceback (most recent call last):
File "...\tensorflow\core\framework\graph_pb2.py", line 6, in 
from google.protobuf import descriptor as _descriptor
ImportError: cannot import name 'descriptor'

4、42011070

No module named "pywrap_tensorflow

5、42217532

OpKernel ('op: "BestSplits" device_type: "CPU"') for unknown op: BestSplits

6、43134753

The TensorFlow library wasn't compiled to use SSE instructions

7、38896424

Could not find a version that satisfies the requirement tensorflow

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 分割线 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 

补充:MacOS X 安装 TensorFlow

因在个人Mac上搭建,此处使用 Python 2.7.10, 不用 GPU 支持,请使用超级权限。

1、使用easy_install 安装 python 下的包管理工具 pip。

$ sudo easy_install pip
$ pip --version

pip 10.0.1 from /Library/Python/2.7/site-packages/pip-10.0.1-py2.7.egg/pip (python 2.7)

2、安装兼容 Python2 和 Python3 的兼容模块 six(Six is a Python 2 and 3 compatibility library)。
$ sudo easy_install --upgrade six
Password:
Searching for six
Reading https://pypi.python.org/simple/six/
Best match: six 1.11.0
Processing six-1.11.0-py2.7.egg
Removing six 1.4.1 from easy-install.pth file
six 1.11.0 is already the active version in easy-install.pth

Using /Library/Python/2.7/site-packages/six-1.11.0-py2.7.egg
Processing dependencies for six
Finished processing dependencies for six
 

3、安装 TensorFlow 包。

$ sudo pip install -ignore-packages six https://storage.googleapis.com/tensorflow/mac/cpu/tensorflow-0.10.0-py2-none-any.whl

Could not install packages due to an EnvironmentError: HTTPSConnectionPool(host='storage.googleapis.com', port=443): Max retries exceeded with url: /tensorflow/mac/cpu/tensorflow-0.10.0-py2-none-any.whl (Caused by ConnectTimeoutError(<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x108d43050>, 'Connection to storage.googleapis.com timed out. (connect timeout=15)'))

下载 tensorflow-0.10.0-py2-none-any.whl 后执行以下命令。

$ sudo pip install -ignore-packages six /Users/Downloads/tensorflow-0.10.0-py2-none-any.whl

 此处提示错误“Could not find a version that satisfies the requirement numpy>=1.10.1 (from tensorflow==0.10.0) (from versions: ) No matching distribution found for numpy>=1.10.1 (from tensorflow==0.10.0)”。 这里下载 tensorflow1.7.0 版本whl。

4、使用easy_install 安装 python 下的包 numpy(对多维数组对象、矩阵运算数学函数库的支持)。

$ sudo easy_install numpy
 

5、Python 中引入 TensorFlow 模块,运行测试。

$ python
Python 2.7.10 (default, Oct  6 2017, 22:29:07) 
[GCC 4.2.1 Compatible Apple LLVM 9.0.0 (clang-900.0.31)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import tensorflow as tf
dyld: warning, LC_RPATH $ORIGIN/../../_solib_darwin_x86_64/_U_S_Stensorflow_Spython_C_Upywrap_Utensorflow_Uinternal.so___Utensorflow in /Library/Python/2.7/site-packages/tensorflow/python/_pywrap_tensorflow_internal.so being ignored in restricted program because it is a relative path
>>> sess = tf.Session()
2018-04-26 00:47:30.723802: I tensorflow/core/platform/cpu_feature_guard.cc:140] Your CPU supports instructions that this TensorFlow binary was not compiled to use: AVX2 FMA
>>> a = tf.constant(2)
>>> 7 = tf.constant(7)
  File "<stdin>", line 1
SyntaxError: can't assign to literal
>>> b = tf.constant(7)
>>> print(sess.run(a+b))
9
 

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