How to run ctr examples with GPU

[HydraZeng]

Hi Hetu's authors,

Is there any example scripts to run ctr model with GPU? Current examples use heturun for multi-worker, but there is no GPU related arguments in this tool. I have comfirmed on my testbed that current ctr scripts run on CPU instead of GPU.

Looking for your responses. Thx.

[HydraZeng]

Update: It seems that it is actually ran in GPU. Sry