The result of L_out is nan, and Acc is 0.00

[Jaychouxq]

EPOCH 0
Step 00000050 L_out= nan Acc=0.00 --- 1006.39 ms/batch
Step 00000100 L_out= nan Acc=0.00 --- 924.97 ms/batch
Step 00000150 L_out= nan Acc=0.00 --- 908.08 ms/batch
Step 00000200 L_out= nan Acc=0.00 --- 760.66 ms/batch
Step 00000250 L_out= nan Acc=0.00 --- 811.27 ms/batch
Step 00000300 L_out= nan Acc=0.00 --- 967.48 ms/batch
Step 00000350 L_out= nan Acc=0.00 --- 719.22 ms/batch
Step 00000400 L_out= nan Acc=0.00 --- 828.67 ms/batch
Step 00000450 L_out= nan Acc=0.00 --- 696.24 ms/batch
Step 00000500 L_out= nan Acc=0.00 --- 873.87 ms/batch
Step 00000550 L_out= nan Acc=0.00 --- 719.05 ms/batch
Step 00000600 L_out= nan Acc=0.00 --- 788.21 ms/batch
Step 00000650 L_out= nan Acc=0.00 --- 798.09 ms/batch
Step 00000700 L_out= nan Acc=0.00 --- 925.55 ms/batch
Step 00000750 L_out= nan Acc=0.00 --- 741.91 ms/batch
0 / 200
50 / 200
100 / 200
150 / 200
eval accuracy: 0.18944735107421876
mean IOU:0.01457287315955529
Mean IoU = 1.5%
1.46 | 18.94 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

Best m_IoU is: 1.457