import torch

g = torch.Generator().manual_seed(1234)
row_perm = torch.randperm(32, generator=g)

def shuffle_rows(x):        # x: (C, H, W)
    return x[:, row_perm, :]

print(row_perm[:8].tolist())   # [15, 9, 8, 1, 4, 12, 30, 7]