如何在DGL中修复“导入错误：/ home / ... ... / lib / libtorch.so.1：未定义的符号：nvrtcGetProgramLogSize”？

Question

我在dgl（DeepMind的Deep Graph Library）中导入pytorch时遇到错误，具体是：

ImportError：/home/user/anaconda3/envs/my_env/lib/python3.7/site-packages/torch/lib/libtorch.so.1：未定义的符号：nvrtcGetProgramLogSize

我试图重新安装pytorch（使用卸载重新安装conda un/install）。我也在Google中搜索，发现了这个https://github.com/pytorch/pytorch/issues/14973。在那里，他们解决它在连接libnvrtc.so和libcuda.so，但我不知道这意味着什么。有人知道吗？

这是基本代码：

import dgl
from parseador import train_df

g = dgl.DGLGraph()
g.add_nodes(5)
g.add_edges([0, 0, 0, 0], [1, 2, 3, 4])
g.ndata['h'] = th.randn(5, 3)
g.edata['h'] = th.randn(4, 4)

这是错误：

Traceback (most recent call last):
  File "/home/user/Documentos/Repo/grafos.py", line 1, in <module>
    import dgl
  File "/home/user/anaconda3/envs/my_env/lib/python3.7/site-packages/dgl/__init__.py", line 2, in <module>
    from . import function
  File "/home/user/anaconda3/envs/my_env/lib/python3.7/site-packages/dgl/function/__init__.py", line 5, in <module>
    from .message import *
  File "/home/user/anaconda3/envs/my_env/lib/python3.7/site-packages/dgl/function/message.py", line 7, in <module>
    from .. import backend as F
  File "/home/user/anaconda3/envs/my_env/lib/python3.7/site-packages/dgl/backend/__init__.py", line 46, in <module>
    load_backend(os.environ.get('DGLBACKEND', 'pytorch').lower())
  File "/home/user/anaconda3/envs/my_env/lib/python3.7/site-packages/dgl/backend/__init__.py", line 18, in load_backend
    mod = importlib.import_module('.%s' % mod_name, __name__)
  File "/home/user/anaconda3/envs/my_env/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "/home/user/anaconda3/envs/my_env/lib/python3.7/site-packages/dgl/backend/pytorch/__init__.py", line 1, in <module>
    from .tensor import *
  File "/home/user/anaconda3/envs/my_env/lib/python3.7/site-packages/dgl/backend/pytorch/tensor.py", line 5, in <module>
    import torch as th
  File "/home/user/anaconda3/envs/my_env/lib/python3.7/site-packages/torch/__init__.py", line 102, in <module>
    from torch._C import *
ImportError: /home/user/anaconda3/envs/my_env/lib/python3.7/site-packages/torch/lib/libtorch.so.1: undefined symbol: nvrtcGetProgramLogSize

如何解决此错误？前一段时间，我在Windows 10中正确运行了此代码，而现在我正在运行Ubuntu 18.04。

Answer 1

我也遇到了这个问题，但是我实际上想使用GPU，因此安装pytorch-cpu不是我的选择。

相反，pytorch从pytorch渠道安装软件包（而不是defaults）为我解决了这个问题：conda install pytorch --channel pytorch

Answer 2

我刚刚修复了同样的异常conda install pytorch-cpu