Can you tell me if these two pytorch operations are equivalent: torch.bmm(attention_slice, value) and einsum('b i j, b j d -> b i d', attention_slice, value)
Yes, they are equivalent operations.

`torch.bmm(attention_slice, value)` performs a batch matrix multiplication of two 3D tensors, where the first tensor represents a batch of matrices with dimensions `b x i x j` and the second tensor represents a batch of matrices with dimensions `b x j x d`. The result is a batch of matrices with dimensions `b x i x d`.

`einsum('b i j, b j d -> b i d', attention_slice, value)` performs the same operation, but using the Einstein summation notation. In this notation, the first operand is represented by `b i j` and the second operand is represented by `b j d`, and the result is represented by `b i d`.

So both operations result in the same output for equivalent inputs.