RETRACE tensorflow runtime_error ai_generated true

WARNING:tensorflow:最近 5 次对 <function train_step> 的调用中有 5 次触发了 tf.function 重追踪

WARNING:tensorflow:5 out of the last 5 calls to <function train_step> triggered tf.function retracing

ID: tensorflow/graph-mode-retracing-warning

其他格式: JSON · Markdown 中文 · English
80%修复率
87%置信度
1证据数
2023-11-20首次发现

版本兼容性

版本状态引入弃用备注
tensorflow 2.11.0 active — — —
tensorflow 2.12.0 active — — —
tensorflow 2.13.0 active — — —

根因分析

tf.function 被反复重追踪，因为输入张量的形状或数据类型在调用之间发生变化，导致性能下降。

English

The tf.function is being retraced repeatedly because the input tensor shapes or dtypes change between calls, which degrades performance.

generic

官方文档

https://www.tensorflow.org/guide/function

解决方案

  1. Ensure all input tensors have consistent shapes and dtypes across batches. Pad variable-length inputs to a fixed shape using `tf.keras.preprocessing.sequence.pad_sequences`.

无效尝试

常见但无效的做法:

  1. 90% 失败

    This loses the performance benefits of graph execution and may cause other errors.

  2. 85% 失败

    This can mask the issue but may lead to incorrect gradients or memory errors.