Matrices multiplication: inconsistent tensor size

1

Using PyTorch 0.1.12 and trying to multiply two matrices in the following sizes: [1,49,1] and [1,49,256], but when I do I get the error:

RuntimeError: inconsistent tensor size

I tried using .expand_as for both matrices but it didn’t work.
(I know that it works on newer versions)

2

I’ve tested it in my 0.1.12 environment and it should work like you tried it:

a = torch.randn(1, 49, 1)
b = torch.randn(1, 49, 256)
c = a.expand_as(b) * b
1 Like
3

Yeah, you’re right. For some reason I thought it didn’t work, thanks!