快活林资源网 Design By www.csstdc.com

如下所示:

 
from multiprocessing import Process
import os
 
 
def training_function(...):
 import keras # 此处需要在子进程中
 ...
 
if __name__ == '__main__':
 p = Process(target=training_function, args=(...,))
 p.start()

原文地址:https://stackoverflow.com/questions/42504669/keras-tensorflow-and-multiprocessing-in-python

1、DO NOT LOAD KERAS TO YOUR MAIN ENVIRONMENT. If you want to load Keras / Theano / TensorFlow do it only in the function environment. E.g. don't do this:

import keras
 
def training_function(...):
 ...

but do the following:

def training_function(...):
 import keras
 ...

Run work connected with each model in a separate process: I'm usually creating workers which are making the job (like e.g. training, tuning, scoring) and I'm running them in separate processes. What is nice about it that whole memory used by this process is completely freedwhen your process is done. This helps you with loads of memory problems which you usually come across when you are using multiprocessing or even running multiple models in one process. So this looks e.g. like this:

def _training_worker(train_params):
 import keras
 model = obtain_model(train_params)
 model.fit(train_params)
 send_message_to_main_process(...)
 
def train_new_model(train_params):
 training_process = multiprocessing.Process(target=_training_worker, args = train_params)
 training_process.start()
 get_message_from_training_process(...)
 training_process.join()

Different approach is simply preparing different scripts for different model actions. But this may cause memory errors especially when your models are memory consuming. NOTE that due to this reason it's better to make your execution strictly sequential.

以上这篇keras tensorflow 实现在python下多进程运行就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持。

快活林资源网 Design By www.csstdc.com
广告合作:本站广告合作请联系QQ:858582 申请时备注:广告合作(否则不回)
免责声明:本站资源来自互联网收集,仅供用于学习和交流,请遵循相关法律法规,本站一切资源不代表本站立场,如有侵权、后门、不妥请联系本站删除!
快活林资源网 Design By www.csstdc.com

P70系列延期,华为新旗舰将在下月发布

3月20日消息,近期博主@数码闲聊站 透露,原定三月份发布的华为新旗舰P70系列延期发布,预计4月份上市。

而博主@定焦数码 爆料,华为的P70系列在定位上已经超过了Mate60,成为了重要的旗舰系列之一。它肩负着重返影像领域顶尖的使命。那么这次P70会带来哪些令人惊艳的创新呢?

根据目前爆料的消息来看,华为P70系列将推出三个版本,其中P70和P70 Pro采用了三角形的摄像头模组设计,而P70 Art则采用了与上一代P60 Art相似的不规则形状设计。这样的外观是否好看见仁见智,但辨识度绝对拉满。