tensor([-2.1041, -1.3520, -1.9085, -1.2877, -1.6116, -1.4681], device='cuda:0',
       grad_fn=<SubBackward0>)
tensor(-9.7320, device='cuda:0', grad_fn=<SumBackward1>)
tensor([-2.0231, -0.7637, -1.2056, -0.1035, -0.9626, -1.1597], device='cuda:0')
