TensorFlow是Google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名称解析为其组件。
用法:tensorflow.DeviceSpec.parse_from_string( spec )
参数:
- spec:它是格式为/job:/副本:/task:/device:CPU:或/job:/副本:/task:/device:GPU的字符串,所有字段均为可选。
返回值:它返回一个DeviceSpec对象。
范例1:
Python3
# 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
范例2:
Python3
# 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
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