Tensor access with tuples causes error for sizes less than 32

The following code does not work if N < 32:

N = 31
a = torch.ones(N, N)
indices = [(i, i) for i in range(N)]

The error it outputs is:

IndexError: too many indices for tensor of dimension 2

But if N >= 32, it works. I suspect this might be a bug in PyTorch itself?

My PyTorch version is 1.11.0.

I found a similar topic discussing it here: python - Pytorch tensor indexing error for sizes M < 32? - Stack Overflow

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