pytorch v1.4.0安装问题

直接使用conda安装报错：

(CenterNet) C:\Users\16323>conda install pytorch==1.4.0 torchvision==0.5.0 cudatoolkit=10.1 -c pytorch -c conda-forge
Channels:
 - pytorch
 - conda-forge
 - defaults
Platform: win-64
Collecting package metadata (repodata.json): done
Solving environment: failed

PackagesNotFoundError: The following packages are not available from current channels:

  - torchvision==0.5.0

Current channels:

  - https://conda.anaconda.org/pytorch
  - https://conda.anaconda.org/conda-forge
  - https://repo.anaconda.com/pkgs/main
  - https://repo.anaconda.com/pkgs/r
  - https://repo.anaconda.com/pkgs/msys2

To search for alternate channels that may provide the conda package you're
looking for, navigate to

    https://anaconda.org

and use the search bar at the top of the page.

使用pip直接安装，报错：

(CenterNet) C:\Users\16323>pip install torch==1.4.0 torchvision==0.5.0
ERROR: Could not find a version that satisfies the requirement torch==1.4.0 (from versions: 1.7.0, 1.7.1, 1.8.0, 1.8.1, 1.9.0, 1.9.1, 1.10.0, 1.10.1, 1.10.2)
ERROR: No matching distribution found for torch==1.4.0

使用 PyTorch 官方下载源：

pip install torch==1.4.0 torchvision==0.5.0 -f https://download.pytorch.org/whl/torch_stable.html