Okay I tried that and found that time is not decreasing, or is it?
Epoch: [0][0/3]         Time  2.614 ( 2.614)	
Epoch: [1][0/3]	        Time  0.595 ( 0.595)	
Epoch: [2][0/3]	        Time  0.592 ( 0.592)	
...                          
Epoch: [88][0/3]        Time  0.586 ( 0.586)
Epoch: [89][0/3]        Time  0.596 ( 0.596)

What do you think I should do?