RuntimeError：cuDNN版本不匹配：PyTorch已针对7102进行了编译，但针对7604进行了链接

Question

我在运行深度学习模型训练时遇到了这个错误，尽管通过Internet查看了许多解决方案，但它们并没有帮助我。日志如下：

Traceback (most recent call last):
  File "main.py", line 208, in <module>
    main()
  File "main.py", line 100, in main
    model = nn.DataParallel(model).cuda()
  File "/home/dexter/miniconda3/envs/VideoSum/lib/python3.5/site-packages/torch/nn/parallel/data_parallel.py", line 105, in __init__
    self.module.cuda(device_ids[0])
  File "/home/dexter/miniconda3/envs/VideoSum/lib/python3.5/site-packages/torch/nn/modules/module.py", line 249, in cuda
    return self._apply(lambda t: t.cuda(device))
  File "/home/dexter/miniconda3/envs/VideoSum/lib/python3.5/site-packages/torch/nn/modules/module.py", line 176, in _apply
    module._apply(fn)
  File "/home/dexter/miniconda3/envs/VideoSum/lib/python3.5/site-packages/torch/nn/modules/rnn.py", line 112, in _apply
    self.flatten_parameters()
  File "/home/dexter/miniconda3/envs/VideoSum/lib/python3.5/site-packages/torch/nn/modules/rnn.py", line 78, in flatten_parameters
    if not any_param.is_cuda or not torch.backends.cudnn.is_acceptable(any_param):
  File "/home/dexter/miniconda3/envs/VideoSum/lib/python3.5/site-packages/torch/backends/cudnn/__init__.py", line 87, in is_acceptable
    if _libcudnn() is None:
  File "/home/dexter/miniconda3/envs/VideoSum/lib/python3.5/site-packages/torch/backends/cudnn/__init__.py", line 58, in _libcudnn
    'but linked against {}'.format(compile_version, __cudnn_version))
RuntimeError: cuDNN version mismatch: PyTorch was compiled against 7102 but linked against 7604

Answer 1

问题是，无论日志中显示的版本是什么，7.6.4是我的cudnn版本，而7.1.2是代码最初编译的cudnn版本。我需要的只是通过以下方式降级（或升级我当前的cudnn版本）：

conda install cudnn=7.1.2

如果有的话，请纠正我。