安装pyg（torch_geometric）记录

首先在官网上，根据cuda和torch查看对应的html网址。old torch版本。其次，分别安装以下包。

.conda/envs/gmne_dgl/bin/pip install --no-index torch-scatter -f https://pytorch-geometric.com/whl/torch-1.8.0+cu111.html
.conda/envs/gmne_dgl/bin/pip install --no-index torch-sparse -f https://pytorch-geometric.com/whl/torch-1.8.0+cu111.html
.conda/envs/gmne_dgl/bin/pip install --no-index torch-cluster -f https://pytorch-geometric.com/whl/torch-1.8.0+cu111.html
.conda/envs/gmne_dgl/bin/pip install --no-index torch-spline-conv -f https://pytorch-geometric.com/whl/torch-1.8.0+cu111.html