[03/19 14:51:22][INFO] utils.logging: 88: {"_type": "train_iter", "epoch": "1/300", "eta": "2739 days, 21:40:53", "iter": "50/1000000", "loss": 3.201890, "lr": 0.000014, "time_diff": 0.789092, "top1_err": 50.000000, "top5_err": 0.000000} is it normal?why?