00_pytorch_fundamentals Exercises Question 5&6

[Perian-Yan]

Hi, I got a different answer to this question. My code is

# set random seed for GPU
torch.cuda.manual_seed(1234)

device = "cuda" if torch.cuda.is_available() else "cpu"
T1_gpu = torch.rand((2,3), device=device)
T2_gpu = torch.rand((2,3), device=device)
print(T1_gpu)
print(T2_gpu)

However, the solution is:

I don't know why we need to set torch.manual_seed(1234) in the second cell again. In this way, what actually does torch.cuda.manual_seed(1234) do?
Thank you in advance!