How to understand the log file dumped by autoscheduler

I try to use TVM autoscheduler to tuning CONV2D and find a log_file that records the configuration. Like: {"i": [["[\"conv2d_layer\", 1, 7, 7, 512, 512, 3, 3, [1, 1], [1, 1]]", "cuda -keys=cuda,gpu -arch=sm_80 -max_num_threads=1024 -thread_warp_size=32", [-1, 16, 64, 49152, 2147483647, 1024, 8, 32], "", 0, []], [[], [["CI", 5], ["SP", 3, 0, 1, [1, 1, 1, 1], 1], ["SP", 3, 5, 512, [1, 32, 4, 1], 1], ["SP", 3, 10, 7, [7, 1, 1, 1], 1], ["SP", 3, 15, 7, [1, 1, 1, 1], 1], ["SP", 3, 20, 512, [2, 2], 1], ["SP", 3, 23, 3, [1, 3], 1], ["SP", 3, 26, 3, [1, 1], 1], ["RE", 3, [0, 5, 10, 15, 1, 6, 11, 16, 2, 7, 12, 17, 20, 23, 26, 21, 24, 27, 3, 8, 13, 18, 22, 25, 28, 4, 9, 14, 19]], ["FSP", 6, 0, 1, 3], ["FSP", 6, 4, 2, 3], ["FSP", 6, 8, 3, 3], ["FSP", 6, 12, 4, 3], ["RE", 6, [0, 4, 8, 12, 1, 5, 9, 13, 2, 6, 10, 14, 3, 7, 11, 15]], ["CA", 3, 6, 11], ["CHR", 2, "shared", [3]], ["CA", 3, 4, 14], ["CHR", 1, "shared", [4]], ["CA", 2, 5, 14], ["CI", 1], ["FU", 8, [0, 1, 2, 3]], ["AN", 8, 0, 5], ["FU", 8, [1, 2, 3, 4]], ["AN", 8, 1, 4], ["FU", 8, [2, 3, 4, 5]], ["AN", 8, 2, 6], ["FU", 4, [0, 1, 2, 3]], ["SP", 4, 0, 36, [1], 1], ["AN", 4, 1, 2], ["FFSP", 4, 0, [4, 3, 2, 1], 1, 1], ["AN", 4, 1, 6], ["FU", 2, [0, 1, 2, 3]], ["SP", 2, 0, 36, [1], 1], ["AN", 2, 1, 2], ["FFSP", 2, 0, [4, 3, 2, 1], 1, 1], ["AN", 2, 1, 6], ["PR", 5, 0, "auto_unroll_max_step$1024"]]]], "r": [[0.000623881], 0, 8.03039, 1658460276], "v": "v0.6"}

Is there any documents to understand this configuration? Thanks.

This link (https://discuss.tvm.apache.org/t/explanation-of-autoscheduler-transform-steps/9512) maybe help.