here are the gradientes and the data of the net:
data is

 0.0000  0.0000  0.0000  ...   0.0000  0.0000  0.0000
-0.3084 -1.3064 -1.2891  ...  -1.4110  0.6938  0.5450
 0.1591 -0.6072 -0.1963  ...  -0.3436  1.1036  1.7518
          ...             ⋱             ...          
 1.8543  1.0727 -0.8892  ...  -0.6763  0.8102 -0.3621
 1.2991  0.8048  0.5159  ...  -1.9514 -0.0883 -0.9512
 0.3984  0.5590 -1.4316  ...  -0.9093  0.1330 -2.4621
[torch.FloatTensor of size 13836x100]

grad is
Variable containing:
1.00000e-05 *
 0.0000  0.0000  0.0000  ...   0.0000  0.0000  0.0000
-0.4833  0.7489 -1.0286  ...   0.6889  0.1027  0.1220
 0.0000  0.0000  0.0000  ...   0.0000  0.0000  0.0000
          ...             ⋱             ...          
 0.0000  0.0000  0.0000  ...   0.0000  0.0000  0.0000
 0.0000  0.0000  0.0000  ...   0.0000  0.0000  0.0000
 0.0000  0.0000  0.0000  ...   0.0000  0.0000  0.0000
[torch.FloatTensor of size 13836x100]