我想创建张量流记录来提供我的模型; 到目前为止,我使用以下代码将uint8 numpy数组存储为TFRecord格式;
def _int64_feature(value):
return tf.train.Feature(int64_list=tf.train.Int64List(value=[value]))
def _bytes_feature(value):
return tf.train.Feature(bytes_list=tf.train.BytesList(value=[value]))
def _floats_feature(value):
return tf.train.Feature(float_list=tf.train.FloatList(value=[value]))
def convert_to_record(name, image, label, map):
filename = os.path.join(params.TRAINING_RECORDS_DATA_DIR, name + '.' + params.DATA_EXT)
writer = tf.python_io.TFRecordWriter(filename)
image_raw = image.tostring()
map_raw = map.tostring()
label_raw = label.tostring()
example = tf.train.Example(features=tf.train.Features(feature={
'image_raw': _bytes_feature(image_raw),
'map_raw': _bytes_feature(map_raw),
'label_raw': _bytes_feature(label_raw)
}))
writer.write(example.SerializeToString())
writer.close()
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我用这个示例代码阅读
features = tf.parse_single_example(example, features={
'image_raw': tf.FixedLenFeature([], tf.string),
'map_raw': tf.FixedLenFeature([], tf.string),
'label_raw': tf.FixedLenFeature([], tf.string),
})
image = tf.decode_raw(features['image_raw'], tf.uint8)
image.set_shape(params.IMAGE_HEIGHT*params.IMAGE_WIDTH*3)
image = tf.reshape(image_, (params.IMAGE_HEIGHT,params.IMAGE_WIDTH,3))
map = tf.decode_raw(features['map_raw'], tf.uint8) …Run Code Online (Sandbox Code Playgroud) 我在使用新的tf.data tensorflow类实现输入管道时遇到问题。
具体来说,当我在预处理中包含卷积运算时(使用该map方法将其添加到管道中时),出现以下错误
tensorflow.python.framework.errors_impl.UnimplementedError: Generic conv implementation only supports NHWC tensor format for now.
[[{{node conv_debug}} = Conv2D[T=DT_FLOAT, data_format="NCHW", dilations=[1, 1, 1, 1], padding="SAME", strides=[1, 1, 1, 1], use_cudnn_on_gpu=true](conv_debug-0-TransposeNHWCToNCHW-LayoutOptimizer, ArithmeticOptimizer/FoldMultiplyIntoConv_scaled_conv_debug_Const)]]
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当我从管道中排除卷积时,一切都会按预期进行。
我在下面附上了重现该问题所需的最少代码。
经过3种配置测试:
我做错了还是是CUDA / CUDnn相关问题?
谢谢!
import numpy as np
import tensorflow as tf
image_height, image_width = 100, 200
def _bytes_feature(value):
return tf.train.Feature(bytes_list=tf.train.BytesList(value=[value]))
def serialize_to_record(record_name, label, image):
"""Create a data record and store …Run Code Online (Sandbox Code Playgroud)