def test_no_val_end_module(tmpdir): """Tests use case where trainer saves the model, and user loads it from tags independently.""" tutils.reset_seed() class CurrentTestModel(LightTrainDataloader, LightValidationStepMixin, TestModelBase): pass hparams = tutils.get_hparams() model = CurrentTestModel(hparams) # logger file to get meta logger = tutils.get_test_tube_logger(tmpdir, False) trainer_options = dict(max_epochs=1, logger=logger, checkpoint_callback=ModelCheckpoint(tmpdir)) # fit model trainer = Trainer(**trainer_options) result = trainer.fit(model) # traning complete assert result == 1, 'amp + ddp model failed to complete' # save model new_weights_path = os.path.join(tmpdir, 'save_test.ckpt') trainer.save_checkpoint(new_weights_path) # load new model tags_path = tutils.get_data_path(logger, path_dir=tmpdir) tags_path = os.path.join(tags_path, 'meta_tags.csv') model_2 = LightningTestModel.load_from_metrics( weights_path=new_weights_path, tags_csv=tags_path) model_2.eval()
def test_running_test_after_fitting(tmpdir): """Verify test() on fitted model.""" tutils.reset_seed() hparams = tutils.get_hparams() model = LightningTestModel(hparams) # logger file to get meta logger = tutils.get_test_tube_logger(tmpdir, False) # logger file to get weights checkpoint = tutils.init_checkpoint_callback(logger) trainer_options = dict(default_save_path=tmpdir, show_progress_bar=False, max_epochs=4, train_percent_check=0.4, val_percent_check=0.2, test_percent_check=0.2, checkpoint_callback=checkpoint, logger=logger) # fit model trainer = Trainer(**trainer_options) result = trainer.fit(model) assert result == 1, 'training failed to complete' trainer.test() # test we have good test accuracy tutils.assert_ok_model_acc(trainer)
def test_running_test_pretrained_model(tmpdir): """Verify test() on pretrained model.""" tutils.reset_seed() hparams = tutils.get_hparams() model = LightningTestModel(hparams) # logger file to get meta logger = tutils.get_test_tube_logger(tmpdir, False) # logger file to get weights checkpoint = tutils.init_checkpoint_callback(logger) trainer_options = dict(show_progress_bar=False, max_epochs=4, train_percent_check=0.4, val_percent_check=0.2, checkpoint_callback=checkpoint, logger=logger) # fit model trainer = Trainer(**trainer_options) result = trainer.fit(model) # correct result and ok accuracy assert result == 1, 'training failed to complete' pretrained_model = tutils.load_model(logger, trainer.checkpoint_callback.filepath, module_class=LightningTestModel) new_trainer = Trainer(**trainer_options) new_trainer.test(pretrained_model) # test we have good test accuracy tutils.assert_ok_model_acc(new_trainer)
def test_model_saving_loading(tmpdir): """Tests use case where trainer saves the model, and user loads it from tags independently.""" tutils.reset_seed() hparams = tutils.get_hparams() model = LightningTestModel(hparams) # logger file to get meta logger = tutils.get_test_tube_logger(tmpdir, False) trainer_options = dict(max_epochs=1, logger=logger, checkpoint_callback=ModelCheckpoint(tmpdir)) # fit model trainer = Trainer(**trainer_options) result = trainer.fit(model) # traning complete assert result == 1, 'amp + ddp model failed to complete' # make a prediction dataloaders = model.test_dataloader() if not isinstance(dataloaders, list): dataloaders = [dataloaders] for dataloader in dataloaders: for batch in dataloader: break x, y = batch x = x.view(x.size(0), -1) # generate preds before saving model model.eval() pred_before_saving = model(x) # save model new_weights_path = os.path.join(tmpdir, 'save_test.ckpt') trainer.save_checkpoint(new_weights_path) # load new model tags_path = tutils.get_data_path(logger, path_dir=tmpdir) tags_path = os.path.join(tags_path, 'meta_tags.csv') model_2 = LightningTestModel.load_from_metrics( weights_path=new_weights_path, tags_csv=tags_path) model_2.eval() # make prediction # assert that both predictions are the same new_pred = model_2(x) assert torch.all(torch.eq(pred_before_saving, new_pred)).item() == 1
def test_cpu_model(tmpdir): """Make sure model trains on CPU.""" tutils.reset_seed() trainer_options = dict(default_save_path=tmpdir, show_progress_bar=False, logger=tutils.get_test_tube_logger(tmpdir), max_epochs=1, train_percent_check=0.4, val_percent_check=0.4) model, hparams = tutils.get_model() tutils.run_model_test(trainer_options, model, on_gpu=False)
def test_running_test_pretrained_model_ddp(tmpdir): """Verify `test()` on pretrained model.""" if not tutils.can_run_gpu_test(): return tutils.reset_seed() tutils.set_random_master_port() hparams = tutils.get_hparams() model = LightningTestModel(hparams) # exp file to get meta logger = tutils.get_test_tube_logger(tmpdir, False) # exp file to get weights checkpoint = tutils.init_checkpoint_callback(logger) trainer_options = dict(show_progress_bar=False, max_epochs=1, train_percent_check=0.4, val_percent_check=0.2, checkpoint_callback=checkpoint, logger=logger, gpus=[0, 1], distributed_backend='ddp') # fit model trainer = Trainer(**trainer_options) result = trainer.fit(model) log.info(os.listdir(tutils.get_data_path(logger, path_dir=tmpdir))) # correct result and ok accuracy assert result == 1, 'training failed to complete' pretrained_model = tutils.load_model(logger, trainer.checkpoint_callback.filepath, module_class=LightningTestModel) # run test set new_trainer = Trainer(**trainer_options) new_trainer.test(pretrained_model) dataloaders = model.test_dataloader() if not isinstance(dataloaders, list): dataloaders = [dataloaders] for dataloader in dataloaders: tutils.run_prediction(dataloader, pretrained_model)
def test_default_args(tmpdir): """Tests default argument parser for Trainer""" tutils.reset_seed() # logger file to get meta logger = tutils.get_test_tube_logger(tmpdir, False) parser = ArgumentParser(add_help=False) args = parser.parse_args() args.logger = logger args.max_epochs = 5 trainer = Trainer.from_argparse_args(args) assert isinstance(trainer, Trainer) assert trainer.max_epochs == 5
def test_cpu_model_with_amp(tmpdir): """Make sure model trains on CPU.""" tutils.reset_seed() trainer_options = dict(default_save_path=tmpdir, show_progress_bar=False, logger=tutils.get_test_tube_logger(tmpdir), max_epochs=1, train_percent_check=0.4, val_percent_check=0.4, precision=16) model, hparams = tutils.get_model() with pytest.raises((MisconfigurationException, ModuleNotFoundError)): tutils.run_model_test(trainer_options, model, on_gpu=False)
def test_loading_meta_tags(tmpdir): tutils.reset_seed() hparams = tutils.get_hparams() # save tags logger = tutils.get_test_tube_logger(tmpdir, False) logger.log_hyperparams(Namespace(some_str='a_str', an_int=1, a_float=2.0)) logger.log_hyperparams(hparams) logger.save() # load tags path_expt_dir = tutils.get_data_path(logger, path_dir=tmpdir) tags_path = os.path.join(path_expt_dir, 'meta_tags.csv') tags = load_hparams_from_tags_csv(tags_path) assert tags.batch_size == 32 and tags.hidden_dim == 1000
def test_all_features_cpu_model(tmpdir): """Test each of the trainer options.""" tutils.reset_seed() trainer_options = dict(default_save_path=tmpdir, gradient_clip_val=1.0, overfit_pct=0.20, track_grad_norm=2, show_progress_bar=False, logger=tutils.get_test_tube_logger(tmpdir), accumulate_grad_batches=2, max_epochs=1, train_percent_check=0.4, val_percent_check=0.4) model, hparams = tutils.get_model() tutils.run_model_test(trainer_options, model, on_gpu=False)
def test_testtube_logger(tmpdir): """Verify that basic functionality of test tube logger works.""" tutils.reset_seed() hparams = tutils.get_hparams() model = LightningTestModel(hparams) logger = tutils.get_test_tube_logger(tmpdir, False) trainer_options = dict(default_save_path=tmpdir, max_epochs=1, train_percent_check=0.01, logger=logger) trainer = Trainer(**trainer_options) result = trainer.fit(model) assert result == 1, "Training failed"
def test_amp_gpu_ddp_slurm_managed(tmpdir): """Make sure DDP + AMP work.""" if not tutils.can_run_gpu_test(): return tutils.reset_seed() # simulate setting slurm flags tutils.set_random_master_port() os.environ['SLURM_LOCALID'] = str(0) hparams = tutils.get_hparams() model = LightningTestModel(hparams) trainer_options = dict( show_progress_bar=True, max_epochs=1, gpus=[0], distributed_backend='ddp', precision=16 ) # exp file to get meta logger = tutils.get_test_tube_logger(tmpdir, False) # exp file to get weights checkpoint = tutils.init_checkpoint_callback(logger) # add these to the trainer options trainer_options['checkpoint_callback'] = checkpoint trainer_options['logger'] = logger # fit model trainer = Trainer(**trainer_options) trainer.is_slurm_managing_tasks = True result = trainer.fit(model) # correct result and ok accuracy assert result == 1, 'amp + ddp model failed to complete' # test root model address assert trainer.resolve_root_node_address('abc') == 'abc' assert trainer.resolve_root_node_address('abc[23]') == 'abc23' assert trainer.resolve_root_node_address('abc[23-24]') == 'abc23' assert trainer.resolve_root_node_address('abc[23-24, 45-40, 40]') == 'abc23'
def test_testtube_pickle(tmpdir): """Verify that pickling a trainer containing a test tube logger works.""" tutils.reset_seed() hparams = tutils.get_hparams() logger = tutils.get_test_tube_logger(tmpdir, False) logger.log_hyperparams(hparams) logger.save() trainer_options = dict(default_save_path=tmpdir, max_epochs=1, train_percent_check=0.05, logger=logger) trainer = Trainer(**trainer_options) pkl_bytes = pickle.dumps(trainer) trainer2 = pickle.loads(pkl_bytes) trainer2.logger.log_metrics({'acc': 1.0})
def test_ddp_sampler_error(tmpdir): """Make sure DDP + AMP work.""" if not tutils.can_run_gpu_test(): return tutils.reset_seed() tutils.set_random_master_port() hparams = tutils.get_hparams() model = LightningTestModel(hparams, force_remove_distributed_sampler=True) logger = tutils.get_test_tube_logger(tmpdir, True) trainer = Trainer(logger=logger, show_progress_bar=False, max_epochs=1, gpus=[0, 1], distributed_backend='ddp', use_amp=True) with pytest.warns(UserWarning): trainer.get_dataloaders(model)
def test_early_stopping_cpu_model(tmpdir): """Test each of the trainer options.""" tutils.reset_seed() stopping = EarlyStopping(monitor='val_loss', min_delta=0.1) trainer_options = dict( default_save_path=tmpdir, early_stop_callback=stopping, gradient_clip_val=1.0, overfit_pct=0.20, track_grad_norm=2, show_progress_bar=True, logger=tutils.get_test_tube_logger(tmpdir), train_percent_check=0.1, val_percent_check=0.1, ) model, hparams = tutils.get_model() tutils.run_model_test(trainer_options, model, on_gpu=False) # test freeze on cpu model.freeze() model.unfreeze()
def test_running_test_without_val(tmpdir): """Verify `test()` works on a model with no `val_loader`.""" tutils.reset_seed() class CurrentTestModel(LightningTestMixin, LightningTestModelBase): pass hparams = tutils.get_hparams() model = CurrentTestModel(hparams) # logger file to get meta logger = tutils.get_test_tube_logger(tmpdir, False) # logger file to get weights checkpoint = tutils.init_checkpoint_callback(logger) trainer_options = dict( show_progress_bar=False, max_epochs=1, train_percent_check=0.4, val_percent_check=0.2, test_percent_check=0.2, checkpoint_callback=checkpoint, logger=logger, early_stop_callback=False ) # fit model trainer = Trainer(**trainer_options) result = trainer.fit(model) assert result == 1, 'training failed to complete' trainer.test() # test we have good test accuracy tutils.assert_ok_model_acc(trainer)
def test_cpu_restore_training(tmpdir): """Verify continue training session on CPU.""" tutils.reset_seed() hparams = tutils.get_hparams() model = LightningTestModel(hparams) # logger file to get meta test_logger_version = 10 logger = tutils.get_test_tube_logger(tmpdir, False, version=test_logger_version) trainer_options = dict(max_epochs=8, val_check_interval=0.50, val_percent_check=0.2, train_percent_check=0.2, logger=logger, checkpoint_callback=ModelCheckpoint(tmpdir, save_top_k=-1)) # fit model trainer = Trainer(**trainer_options) result = trainer.fit(model) # Increment since we've finished the current epoch, don't want to rerun real_global_epoch = trainer.current_epoch + 1 # traning complete assert result == 1, 'amp + ddp model failed to complete' # wipe-out trainer and model # retrain with not much data... this simulates picking training back up after slurm # we want to see if the weights come back correctly new_logger = tutils.get_test_tube_logger(tmpdir, False, version=test_logger_version) trainer_options = dict( max_epochs=2, val_check_interval=0.50, val_percent_check=0.2, train_percent_check=0.2, logger=new_logger, checkpoint_callback=ModelCheckpoint(tmpdir), ) trainer = Trainer(**trainer_options) model = LightningTestModel(hparams) # set the epoch start hook so we can predict before the model does the full training def assert_good_acc(): assert trainer.current_epoch == real_global_epoch assert trainer.current_epoch >= 0 # if model and state loaded correctly, predictions will be good even though we # haven't trained with the new loaded model trainer.model.eval() for dataloader in trainer.val_dataloaders: tutils.run_prediction(dataloader, trainer.model) model.on_train_start = assert_good_acc # by calling fit again, we trigger training, loading weights from the cluster # and our hook to predict using current model before any more weight updates trainer.fit(model)
def test_dp_resume(tmpdir): """Make sure DP continues training correctly.""" if not tutils.can_run_gpu_test(): return tutils.reset_seed() hparams = tutils.get_hparams() model = LightningTestModel(hparams) trainer_options = dict( show_progress_bar=True, max_epochs=2, gpus=2, distributed_backend='dp', ) # get logger logger = tutils.get_test_tube_logger(tmpdir, debug=False) # exp file to get weights # logger file to get weights checkpoint = tutils.init_checkpoint_callback(logger) # add these to the trainer options trainer_options['logger'] = logger trainer_options['checkpoint_callback'] = checkpoint # fit model trainer = Trainer(**trainer_options) trainer.is_slurm_managing_tasks = True result = trainer.fit(model) # track epoch before saving. Increment since we finished the current epoch, don't want to rerun real_global_epoch = trainer.current_epoch + 1 # correct result and ok accuracy assert result == 1, 'amp + dp model failed to complete' # --------------------------- # HPC LOAD/SAVE # --------------------------- # save trainer.hpc_save(tmpdir, logger) # init new trainer new_logger = tutils.get_test_tube_logger(tmpdir, version=logger.version) trainer_options['logger'] = new_logger trainer_options['checkpoint_callback'] = ModelCheckpoint(tmpdir) trainer_options['train_percent_check'] = 0.2 trainer_options['val_percent_check'] = 0.2 trainer_options['max_epochs'] = 1 new_trainer = Trainer(**trainer_options) # set the epoch start hook so we can predict before the model does the full training def assert_good_acc(): assert new_trainer.current_epoch == real_global_epoch and new_trainer.current_epoch > 0 # if model and state loaded correctly, predictions will be good even though we # haven't trained with the new loaded model dp_model = new_trainer.model dp_model.eval() dataloader = trainer.train_dataloader tutils.run_prediction(dataloader, dp_model, dp=True) # new model model = LightningTestModel(hparams) model.on_train_start = assert_good_acc # fit new model which should load hpc weights new_trainer.fit(model) # test freeze on gpu model.freeze() model.unfreeze()
def test_cpu_slurm_save_load(tmpdir): """Verify model save/load/checkpoint on CPU.""" tutils.reset_seed() hparams = tutils.get_hparams() model = LightningTestModel(hparams) # logger file to get meta logger = tutils.get_test_tube_logger(tmpdir, False) version = logger.version trainer_options = dict(max_epochs=1, logger=logger, checkpoint_callback=ModelCheckpoint(tmpdir)) # fit model trainer = Trainer(**trainer_options) result = trainer.fit(model) real_global_step = trainer.global_step # traning complete assert result == 1, 'amp + ddp model failed to complete' # predict with trained model before saving # make a prediction dataloaders = model.test_dataloader() if not isinstance(dataloaders, list): dataloaders = [dataloaders] for dataloader in dataloaders: for batch in dataloader: break x, y = batch x = x.view(x.size(0), -1) model.eval() pred_before_saving = model(x) # test HPC saving # simulate snapshot on slurm saved_filepath = trainer.hpc_save(tmpdir, logger) assert os.path.exists(saved_filepath) # new logger file to get meta logger = tutils.get_test_tube_logger(tmpdir, False, version=version) trainer_options = dict( max_epochs=1, logger=logger, checkpoint_callback=ModelCheckpoint(tmpdir), ) trainer = Trainer(**trainer_options) model = LightningTestModel(hparams) # set the epoch start hook so we can predict before the model does the full training def assert_pred_same(): assert trainer.global_step == real_global_step and trainer.global_step > 0 # predict with loaded model to make sure answers are the same trainer.model.eval() new_pred = trainer.model(x) assert torch.all(torch.eq(pred_before_saving, new_pred)).item() == 1 model.on_epoch_start = assert_pred_same # by calling fit again, we trigger training, loading weights from the cluster # and our hook to predict using current model before any more weight updates trainer.fit(model)