Bump.
I would like to do the same thing:
torch.matmul(sparse_mat, batch)

Which raises
RuntimeError Traceback (most recent call last)
in ()
----> 1 torch.matmul(sparse_mat, batch)

RuntimeError: sparse tensors do not have strides

While
torch.matmul(sparse_mat.to_dense(), batch)

Runs without issue. I mentioned it in this github issue 139 and I’m thinking about opening a new one as well, if only to find some suitable alternative without iterating.