Clarification Request

Thank you for Sampling-free code.

I have started exploring the code and try to execute for MaskRCNN on the COCO dataset.

I have few doubts. Could you please clarify my doubts?

1. What is the meaning for this below configuration found on ./scripts/train.py. What is this number 16000?
fpn_pos_nms_top_n_train=$[16000/$gpun]

2. if i try to run on 2 gpu, two process ids are created instead of one processId, why is this happening?

3. How to run the tensorboard to visualize the learning performance in the graph?

Thank you,