TensorFlow 1.8.0-rc0 发布,bug 修复版本

栏目: 软件资讯 · 发布时间: 6年前

内容简介:TensorFlow 1.8.0-rc0 发布,此版本包括很多性能改进和bug修复。主要特性和改进包括: 主要特性和改进 Can now pass tf.contrib.distribute.MirroredStrategy() to tf.estimator.RunConfig() to run an Estim...

TensorFlow 1.8.0-rc0 发布,此版本包括很多性能改进和bug修复。主要特性和改进包括:

主要特性和改进

  • Can now pass tf.contrib.distribute.MirroredStrategy() to tf.estimator.RunConfig() to run an Estimator model on multiple GPUs on one machine.

  • Add tf.contrib.data.prefetch_to_device(), which supports prefetching to GPU memory.

  • Added Gradient Boosted Trees as pre-made Estimators: BoostedTreesClassifier, BoostedTreesRegressor.

  • Add 3rd generation pipeline config for Cloud TPUs which improves performance and usability.

  • tf.contrib.bayesflow is moving out to it's own repo.

  • Added tf.contrib.{proto,rpc} to allow generic proto parsing and RPC communication.

Bug 修复和其他改变

  • tf.data:

    • Add tf.contrib.data.prefetch_to_device, which enables prefetching dataset elements to GPU memory.

    • Add tf.contrib.data.AUTOTUNE, which allows the tf.data runtime to automatically tune the prefetch buffer sizes based on your system and environment.

    • Add tf.contrib.data.make_csv_dataset for building datasets of CSV files.

  • Eager Execution:

    • With eager execution Datasets can now be used as standard python iterators (for batch in dataset:). Both Dataset.__iter__() and Dataset.make_one_shot_iterator() can now be used to create iterators when eager execution is enabled.

    • Automatic device placement has been enabled (i.e., use a GPU if available automatically, without requiring an explicit with tf.device(“/gpu:0”)) (Fixes #14133)

    • tf.GradientTape has moved out of contrib.

完整内容请查看发布主页

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