After running the program on ubuntu14, the program becomes a disk sleep state and cannot be killed.

[Imagery007]

cmd:
CUDA_VISIBLE_DEVICES=0,1 python classify.py train --arch drn_d_38 -j 8 --batch-size 32 data/goods --epochs 120 2> &1 |tee log1 &

State:
wust 13620 0.3 0.5 1394124 253628 pts/9 D 19:18 0:00 python classify.py train --arch drn_d_38 -j 8 --batch-size 128 data/goods --epochs 120

The above is my running command and status.