---
title: 关闭memory_optimization后发生core dump
description: "迁移时关闭了TensorFlow的memory_optimization功能，发生了core dump："
url: https://www.hiascend.com/document/detail/zh/TensorFlowCommercial/latest/migration/tfmigr1/tfmigr1_000134.html
sourcePath: /source/zh/TensorFlowCommercial/900/migration/tfmigr1/tfmigr1_000134.html
indexId: 27a6950f4b05584088016795884eb4284d243a4b3e57c091269d589ae9ff10ed73
---
# 关闭memory_optimization后发生core dump

#### 问题现象

迁移时关闭了TensorFlow的memory_optimization功能，发生了core dump：

```
tensorflow/core/grappler/optimizers/memory_optimizer.cc xxx (core dump)
```


#### 原因分析

多p场景下，memory_optimization在NPU上执行可能会出现问题，因此迁移时要求关闭，使用NPU的内存优化逻辑，关闭配置如下：

```
config.graph_options.rewrite_options.memory_optimization = RewriterConfig.OFF
```

但是无论memory优化器开启或关闭，TensorFlow原生代码都应该保证网络正常进行。关闭后出现TensorFlow core dump，说明是TensorFlow自身问题导致。


#### 解决方案

如果出现上述错误，建议用户注释如下代码，开启memory_optimization：

```
# config.graph_options.rewrite_options.memory_optimization = RewriterConfig.OFF
```