These are quick configs for performance or accuracy regression tracking purposes.*`*instance_test.yaml`: can train on 2 GPUs. They are used to test whether the training can successfully finish. They are not expected to produce reasonable training results.*`*inference_acc_test.yaml`: They should be run using `--eval-only`. They run inference using pre-trained models and verify the results are as expected.*`*training_acc_test.yaml`: They should be trained on 8 GPUs. They finish in about an hour and verify the training accuracy is within the normal range.