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Ubuntu+Python2.7にTensorFlowを導入

Last updated at Posted at 2016-01-08

0. TensorFlowとは

Googleが提供している機械学習ライブラリ
@shuhei_fさんのTensorFlow ってなんだろ が分かりやすいです。

1. Ubuntuの準備

Vagrant+VirtualBoxでUbuntu環境構築 などでUbuntuを用意する。

2. 環境の確認

Ubuntu 15.04 / Python 2.7.9

$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=15.04
DISTRIB_CODENAME=vivid
DISTRIB_DESCRIPTION="Ubuntu 15.04"

$ python --version
Python 2.7.9

3. Proxyの設定(必要があれば)

$ export http_proxy="$USERNAME:$PASSWORD@$HOST:$PORT"
$ export https_proxy="$USERNAME:$PASSWORD@$HOST:$PORT"

4. pipのインストール(入ってない場合)

$ curl -kL https://raw.github.com/pypa/pip/master/contrib/get-pip.py | sudo python

5. virtualenvのインストール(入ってない場合)

$ sudo pip install virtualenv

6. TensorFlow用環境の作成

$ mkdir ~/tensorflow
$ virtualenv --system-site-packages ~/tensorflow
$ cd ~/tensorflow
$ source bin/activate

7. TensorFlowのインストール

(tensorflow)$ sudo pip install --upgrade https://storage.googleapis.com/tensorflow/linux/cpu/tensorflow-0.5.0-cp27-none-linux_x86_64.whl

下記のエラーが出る場合は、「python-dev」が入っていないため、
sudo apt-get install python-devで導入する。

(略)
    SystemError: Cannot compile 'Python.h'. Perhaps you need to install python-dev|python-devel.
    
    ----------------------------------------
Command "/usr/bin/python -c "import setuptools, tokenize;__file__='/tmp/pip-build-ZZhjh_/numpy/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-UmWBtU-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /tmp/pip-build-ZZhjh_/numpy

8. TensorFlowの動作確認

hello-tf.py
import tensorflow as tf
import multiprocessing as mp
 
core_num = mp.cpu_count()
config = tf.ConfigProto(
    inter_op_parallelism_threads=core_num,
    intra_op_parallelism_threads=core_num )
sess = tf.Session(config=config)
 
hello = tf.constant('hello, tensorflow!')
print sess.run(hello)
 
a = tf.constant(10)
b = tf.constant(32)
print sess.run(a+b)

(tensorflow)$ python hello-tf.py
I tensorflow/core/common_runtime/local_device.cc:25] Local device intra op parallelism threads: 2
I tensorflow/core/common_runtime/local_session.cc:45] Local session inter op parallelism threads: 2
hello, tensorflow!
42

9. TensorBoard

##ポートフォワードの設定

Vagrantfile
config.vm.network :forwarded_port, host: 6006, guest: 6006
$ vagrant reload

##TensorBoardの起動

$ tensorboard --logdir=[log_dir]
Starting TensorBoard on port 6006
(You can navigate to http://localhost:6006)

#参考
いつの間にかpipのインストールが楽になってた件
TensorFlowで Hello Worldを動かしてみた&その解説

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