build_coordinates generating TFRecords so slowly #51
Description
Why is 'build_coordinates' generating TFRecords so slowly? It takes 4 hours to create TFRecords for 500x500x200 images and 3 days for 2000x2000x200. Moreover, the performance utilization is very low; the server with an A100 GPU and the personal computer with an A2000 GPU have nearly identical speeds.