We prepare the dataset based on the instructions from:
https://github.com/tornadomeet/ResNet
https://mxnet.incubator.apache.org/versions/master/faq/recordio.html

Two different ImageNet record files are required for this training:
1) size 480 with quality 95
2) size 256 with quality 90

Then, modify the path to ImageNet record in the two shell scripts.
First run run480_cg.sh
After it finished, run run256_cg.sh
