Android 在Kivy应用程序中保持Tensorflow会话打开
我正在尝试运行一个用Kivy制作的应用程序和Tensorflow会话,防止每次我做预测时都加载它。更准确地说,我想知道如何从会话内部调用函数 以下是会话的代码:Android 在Kivy应用程序中保持Tensorflow会话打开,android,python,tensorflow,kivy,python-multithreading,Android,Python,Tensorflow,Kivy,Python Multithreading,我正在尝试运行一个用Kivy制作的应用程序和Tensorflow会话,防止每次我做预测时都加载它。更准确地说,我想知道如何从会话内部调用函数 以下是会话的代码: def decode(): # Only allocate part of the gpu memory when predicting. gpu_options = tf.GPUOptions(per_process_gpu_memory_fraction=0.2) config = tf.ConfigProt
def decode():
# Only allocate part of the gpu memory when predicting.
gpu_options = tf.GPUOptions(per_process_gpu_memory_fraction=0.2)
config = tf.ConfigProto(gpu_options=gpu_options)
with tf.Session(config=config) as sess:
# Create model and load parameters.
model = create_model(sess, True)
model.batch_size = 1
enc_vocab_path = os.path.join(gConfig['working_directory'],"vocab%d.enc" % gConfig['enc_vocab_size'])
dec_vocab_path = os.path.join(gConfig['working_directory'],"vocab%d.dec" % gConfig['dec_vocab_size'])
enc_vocab, _ = data_utils.initialize_vocabulary(enc_vocab_path)
_, rev_dec_vocab = data_utils.initialize_vocabulary(dec_vocab_path)
# !!! This is the function that I'm trying to call. !!!
def answersqs(sentence):
token_ids = data_utils.sentence_to_token_ids(tf.compat.as_bytes(sentence), enc_vocab)
bucket_id = min([b for b in xrange(len(_buckets))
if _buckets[b][0] > len(token_ids)])
encoder_inputs, decoder_inputs, target_weights = model.get_batch(
{bucket_id: [(token_ids, [])]}, bucket_id)
_, _, output_logits = model.step(sess, encoder_inputs, decoder_inputs,
target_weights, bucket_id, True)
outputs = [int(np.argmax(logit, axis=1)) for logit in output_logits]
if data_utils.EOS_ID in outputs:
outputs = outputs[:outputs.index(data_utils.EOS_ID)]
return " ".join([tf.compat.as_str(rev_dec_vocab[output]) for output in outputs])
下面是我调用函数的地方:
def resp(self, msg):
def p():
if len(msg) > 0:
# If I try to do decode().answersqs(msg), it starts a new session.
ansr = answersqs(msg)
ansrbox = Message()
ansrbox.ids.mlab.text = str(ansr)
ansrbox.ids.mlab.color = (1, 1, 1)
ansrbox.pos_hint = {'x': 0}
ansrbox.source = './icons/ansr_box.png'
self.root.ids.chatbox.add_widget(ansrbox)
self.root.ids.scrlv.scroll_to(ansrbox)
threading.Thread(target=p).start()
这是最后一部分:
if __name__ == "__main__":
if len(sys.argv) - 1:
gConfig = brain.get_config(sys.argv[1])
else:
# get configuration from seq2seq.ini
gConfig = brain.get_config()
threading.Thread(target=decode()).start()
KatApp().run()
另外,在将会话移植到Android上之前,是否应该将其从GPU更改为CPU?您应该有两个变量图形和会话 加载模型时,您可以执行以下操作:
graph = tf.Graph()
session = tf.Session(config=config)
with graph.as_default(), session.as_default():
# The reset of your model loading code.
当您需要进行预测时:
with graph.as_default(), session.as_default():
return session.run([your_result_tensor])
发生的情况是,会话被加载并存储在内存中,您只需告诉系统这是您想要运行的上下文
在代码中,将def answersqs移动到with零件外部。它应该自动绑定到周围函数中的图形和会话(但您需要使它们在with外部可用)
对于第二部分,通常情况下,如果您遵循指南,导出的模型应该没有硬件绑定信息,并且当您加载它时,tensorflow将找到一个好的位置(如果可用并且足够强大,可能是GPU)。它不应该在那里吗?此外,这是否消除了对
threading.Thread(target=decode()).start()的需要?