这篇文章将为大家详细讲解有关如何解决Tensorflow sess.run导致的内存溢出问题,小编觉得挺实用的,因此分享给大家做个参考,希望大家阅读完这篇文章后可以有所收获。
下面是调用模型进行批量测试的代码(出现溢出),开始以为导致溢出的原因是数据读入方式问题引起的,用了tf , PIL和cv等方式读入图片数据,发现越来越慢,内存占用飙升,调试时发现是sess.run这里出了问题(随着for循环进行速度越来越慢)。
# Creates graph from saved GraphDef
create_graph(pb_path)
# Init tf Session
config = tf.ConfigProto()
config.gpu_options.allow_growth = True
sess = tf.Session(config=config)
init = tf.global_variables_initializer()
sess.run(init)
input_image_tensor = sess.graph.get_tensor_by_name("create_inputs/batch:0")
output_tensor_name = sess.graph.get_tensor_by_name("conv6/out_1:0")
for filename in os.listdir(image_dir):
image_path = os.path.join(image_dir, filename)
start = time.time()
image_data = cv2.imread(image_path)
image_data = cv2.resize(image_data, (w, h))
image_data_1 = image_data - IMG_MEAN
input_image = np.expand_dims(image_data_1, 0)
raw_output_up = tf.image.resize_bilinear(output_tensor_name, size=[h, w], align_corners=True)
raw_output_up = tf.argmax(raw_output_up, axis=3)
predict_img = sess.run(raw_output_up, feed_dict={input_image_tensor: input_image}) # 1,height,width
predict_img = np.squeeze(predict_img) # height, width
voc_palette = visual.make_palette(3)
masked_im = visual.vis_seg(image_data, predict_img, voc_palette)
cv2.imwrite("%s_pred.png" % (save_dir + filename.split(".")[0]), masked_im)
print(time.time() - start)
print(">>>>>>Done")
下面是解决溢出问题的代码(将部分代码放在for循环外)
# Creates graph from saved GraphDef
create_graph(pb_path)
# Init tf Session
config = tf.ConfigProto()
config.gpu_options.allow_growth = True
sess = tf.Session(config=config)
init = tf.global_variables_initializer()
sess.run(init)
input_image_tensor = sess.graph.get_tensor_by_name("create_inputs/batch:0")
output_tensor_name = sess.graph.get_tensor_by_name("conv6/out_1:0")
##############################################################################################################
raw_output_up = tf.image.resize_bilinear(output_tensor_name, size=[h, w], align_corners=True)
raw_output_up = tf.argmax(raw_output_up, axis=3)
##############################################################################################################
for filename in os.listdir(image_dir):
image_path = os.path.join(image_dir, filename)
start = time.time()
image_data = cv2.imread(image_path)
image_data = cv2.resize(image_data, (w, h))
image_data_1 = image_data - IMG_MEAN
input_image = np.expand_dims(image_data_1, 0)
predict_img = sess.run(raw_output_up, feed_dict={input_image_tensor: input_image}) # 1,height,width
predict_img = np.squeeze(predict_img) # height, width
voc_palette = visual.make_palette(3)
masked_im = visual.vis_seg(image_data, predict_img, voc_palette)
cv2.imwrite("%s_pred.png" % (save_dir + filename.split(".")[0]), masked_im)
print(time.time() - start)
print(">>>>>>Done")
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