集群报错：ImportError: /lib64/libstdc++.so.6: version GLIBCXX_3.4.29' not found</p>
<p><code>集群报上述错误，没有root权限，不想麻烦管理员的解决办法：</code></p>
<p>问题描述</p>
<p><code>ImportError: /lib64/libstdc++.so.6: version GLIBCXX_3.4.29' not found</code></p>
<p>错误如下：</p>
<pre><code class="language-python"> from mmcv.ops import sigmoid_focal_loss as _sigmoid_focal_loss
File "/home/xxx/tools/miniconda3/envs/open-mmlab/lib/python3.7/site-packages/mmcv/ops/__init__.py", line 2, in <module>
from .assign_score_withk import assign_score_withk
File "/home/xxx/tools/miniconda3/envs/open-mmlab/lib/python3.7/site-packages/mmcv/ops/assign_score_withk.py", line 6, in <module>
'_ext', ['assign_score_withk_forward', 'assign_score_withk_backward'])
File "/home/xxx/tools/miniconda3/envs/open-mmlab/lib/python3.7/site-packages/mmcv/utils/ext_loader.py", line 13, in load_ext
ext = importlib.import_module('mmcv.' + name)
File "/home/xxx/tools/miniconda3/envs/open-mmlab/lib/python3.7/importlib/__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
ImportError: /lib64/libstdc++.so.6: version GLIBCXX_3.4.29′ not found (required by /home/xxx/tools/miniconda3/envs/open-mmlab/lib/python3.7/site-packages/mmcv/_ext.cpython-37m-x86_64-linux-gnu.so)
确认报错
查看一下报错环境位置的libstdc++.so.6情况
strings /home/xxx/tools/miniconda3/envs/open-mmlab/lib/python3.7/site-packages/mmcv/_ext.cpython-37m-x86_64-linux-gnu.so | grep GLIBC
发现确实没有 version GLIBCXX_3.4.29'</p>
<pre><code class="language-py">(open-mmlab) [xxx@gpu07 mmsegmentation]$ strings /home/xxx/tools/miniconda3/envs/open-mmlab/lib/python3.7/site-packages/mmcv/_ext.cpython-37m-x86_64-linux-gnu.so | grep GLIBC
GLIBC_2.2.5
GLIBC_2.14
GLIBCXX_3.4.18
GLIBCXX_3.4.26
GLIBCXX_3.4.9
GLIBCXX_3.4
</code></pre>
<p>原因分析：</p>
<blockquote>
<p>因为安装的gcc版本比较高，生成的动态库没有替换老版本gcc的动态库，GLIBCXX中的版本比较低</p>
</blockquote>
<p>解决方案：</p>
<blockquote>
<p>将gcc最新版本的动态库替换系统中老版本的动态库</p>
</blockquote>
<ol>
<li>如果不想麻烦管理员，先找找其他环境中的 libstdc++.so.6文件，看有没有自己需要的</li>
</ol>
<pre><code class="language-py">find /home/xxx/tools/miniconda3 -name libstdc++.so.6
/home/xxx/tools/miniconda3/pkgs/libstdcxx-ng-9.3.0-hd4cf53a_17/lib/libstdc++.so.6
/home/xxx/tools/miniconda3/pkgs/libstdcxx-ng-11.2.0-he4da1e4_16/lib/libstdc++.so.6
/home/xxx/tools/miniconda3/pkgs/libstdcxx-ng-11.2.0-h1234567_0/lib/libstdc++.so.6
/home/xxx/tools/miniconda3/pkgs/libstdcxx-ng-12.1.0-ha89aaad_16/lib/libstdc++.so.6
/home/xxx/tools/miniconda3/lib/libstdc++.so.6
/home/xxx/tools/miniconda3/envs/i2v/lib/libstdc++.so.6
/home/xxx/tools/miniconda3/envs/pytorch1.2/lib/libstdc++.so.6
</code></pre>
<ol>
<li>用以下命令查看上述任意一个</li>
</ol>
<pre><code class="language-py">strings /home/xxx/tools/miniconda3/envs/i2v/lib/libstdc++.so.6 | grep GLIBC
</code></pre>
<p>其中有环境中有报错中要求的版本
<img alt="集群报错 /lib64/libstdc++.so.6: version GLIBCXX_3.4.29‘ not found” src=”https://johngo-pic.oss-cn-beijing.aliyuncs.com/articles/20230619/0c8af52dac4c44428e3b143ed1f1c282.png#pic_center” />
3. 拷贝需要的版本
然后只需要cd到报错位置，将libstdc++.so.6删除，将metage环境下指定位置（指定位置是通过前面的find命令找的，一般在 ~/miniconda3/envs/环境名/lib/ 下就有）的libstdc++.so.6拷贝过来就行了；
rm -rf /home/xxx/tools/miniconda3/envs/open-mmlab/lib/python3.7/site-packages/mmcv/_ext.cpython-37m-x86_64-linux-gnu.so
cd /home/xxx/tools/miniconda3/envs/open-mmlab/lib/python3.7/site-packages/mmcv/
cp /home/xxx/tools/miniconda3/envs/i2v/lib/libstdc++.so.6 ./
strings /home/xxx/tools/miniconda3/envs/open-mmlab/lib/python3.7/site-packages/mmcv/_ext.cpython-37m-x86_64-linux-gnu.so.6 | grep GLIBC
如下图
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