Python – tensorflow.DeviceSpec.parse\_from\_string()

TensorFlow是谷歌设计的开源Python库，用于开发机器学习模型和深度学习神经网络。

parse\_from\_string()用于将DeviceSpec名称解析为其组成部分。

语法:
tensorflow.DeviceSpec.parse_from_string( spec )

参数:

• spec : 它是一个形式为 /job:/replica:/task:/device:CPU: 或 /job:/replica:/task:/device:GPU 的字符串，所有字段是可选的。

返回：它返回一个DeviceSpec对象。

示例 1:

# Importing the library
import tensorflow as tf

# Initializing Device Specification
device_spec = tf.DeviceSpec(job ="gfg", replica = 5)

# Printing the DeviceSpec 
print('Device Spec: ', device_spec.to_string())

# Getting new DeviceSpec object
new_device_spec = device_spec.parse_from_string("/GPU:0")

# Printing the result
print('New Device Spec: ', new_device_spec.to_string())

输出:

Device Spec: /job:gfg/replica:5
New Device Spec: /device:GPU:0

示例 2:

# Importing the library
import tensorflow as tf

# Initializing Device Specification
device_spec = tf.DeviceSpec(job ="gfg", replica = 5)

# Printing the DeviceSpec 
print('Device Spec: ', device_spec.to_string())

# Getting new DeviceSpec object
new_device_spec = device_spec.parse_from_string("replica:2 / GPU:0")

# Printing the result
print('New Device Spec: ', new_device_spec.to_string())

输出:

Device Spec: /job:gfg/replica:5
New Device Spec: /replica:2/device:GPU:0