Fix issue with sparse tensors by using pyg 2.0 #23
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We noticed a massive slowdown (~20x) after upgrading packages. Turned out to be a regression in
pytorch-geometricin the handling of sparse tensors (pyg-team/pytorch_geometric#5299). This has been fixed in August but hasn't made it to a release yet, so our best bet was to downgradepytorch-geometric(to2.0.4). This also meant we had to use older versions ofpytorch(1.11) andcudatoolkit(11.3).