What can I do for this problem

[x-xiaojian]

$sudo ./examples/mnist/train_lenet.sh
F0321 18:34:47.668484 9422 device.cpp:95] Cannot find any dGPU!
*** Check failure stack trace: ***
@ 0x7f7880f08ea4 (unknown)
@ 0x7f7880f08deb (unknown)
@ 0x7f7880f087bf (unknown)
@ 0x7f7880f0ba35 (unknown)
@ 0x7f7881211a77 caffe::Device::Init()
@ 0x7f7881212edd caffe::Caffe::Caffe()
@ 0x409865 train()
@ 0x4069d1 main
@ 0x7f78801e8a40 (unknown)
@ 0x407019 _start
@ (nil) (unknown)
Aborted (core dumped)