Multi- GPU Support

[ayushmaan]

Hi Experiencor,

I was waiting for YOLOV3. Thanks for posting.
As you know TF.Estimators are on the way, If possible please add multiple gpu training. Its take too much time to train even on Single GPU.

[jashshopin]

This would be really helpful!

[demonking2]

Please include this.I am having a hard time implementing Yolo with multi GPU support.

[mohitshopin]

For me it`s taking like a day for 100000 images(2 epochs) it will be really helpful if i can get support for multi GPU.

[Yashnitrr]

If you have time, please implement it for multiple GPU's. It will be really helpful for us :)

[experiencor]

@Yashnitrr @jashshopin @mohitshopin @ayushmaan Multi-GPU training is working now.