export TPU_NUM_CORES=8# the proper usage is documented in the README, you need to specify data_dir, output_dir and model_name_or_path# run ./builtin_trainer/finetune_tpu.sh --help to see all the possible optionspython xla_spawn.py --num_cores$TPU_NUM_CORES\ finetune_trainer.py \--learning_rate=3e-5 \--do_train--do_eval--evaluate_during_training\--prediction_loss_only\--n_val 1000 \"$@"