【tensorflow The road of learning 】 How to use gpu Do the operation

<> Preparation stage ：

* Anaconda 3（ Download from official website ）
* python3.x（Anaconda3 Bring your own ）
* GPU（ minimum NVDIA GTX 650）
* tensorflow-gpu（Anaconda Installation in ）
* tensorflow Basic grammar operation
<> Code testing

Write a manual call gpu Device code
# coding:utf-8 ''' ************************************************** @File
： Deep learning practice [ Antonio ] -> Cap1-hello world @IDE ：PyCharm @Author ：Small_wind @Date
：2019/11/17 10:46 ************************************************** ''' import
tensorflowas tf ##1. Let's write one first hello world Under test message=tf.constant("hello world")# Constant string
sess=tf.Session() print(sess.run(message)) sess.close() ##2. constant , variable # Skip
##3. call GPU/CPU equipment c=[] with tf.device('/gpu:0'): rand_t=tf.random_uniform([50,50],
0,10,dtype=tf.float32,seed=0) a=tf.Variable(rand_t) b=tf.Variable(rand_t) c.
append(tf.matmul(a,b)) init=tf.global_variables_initializer()
# To verify Tensorflow Are you sure you want to reuse the specified device , Settable log_device_placement=True sess=tf.Session(config=tf
.ConfigProto(log_device_placement=True)) sess.run(init) print(sess.run(c)) sess.
close()
<> result

of course , stay Anaconda Installed tensorflow-gpu After version , When you run the program later , Will be automatically called first gpu Of （ If so gpu）

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