def train_epoch(
epoch: int,
model: BaseModel,
dataset,
device: str,
tracker: BaseTracker,
checkpoint: ModelCheckpoint,
visualizer: Visualizer,
debugging,
):
early_break = getattr(debugging, "early_break", False)
profiling = getattr(debugging, "profiling", False)
model.train()
tracker.reset("train")
visualizer.reset(epoch, "train")
train_loader = dataset.train_dataloader
iter_data_time = time.time()
with Ctq(train_loader) as tq_train_loader:
for i, data in enumerate(tq_train_loader):
model.set_input(data, device)
t_data = time.time() - iter_data_time
iter_start_time = time.time()
model.optimize_parameters(epoch, dataset.batch_size)
if i % 10 == 0:
tracker.track(model)
tq_train_loader.set_postfix(**tracker.get_metrics(),
data_loading=float(t_data),
iteration=float(time.time() -
iter_start_time),
color=COLORS.TRAIN_COLOR)
if visualizer.is_active:
visualizer.save_visuals(model.get_current_visuals())
iter_data_time = time.time()
if early_break:
break
if profiling:
if i > getattr(debugging, "num_batches", 50):
return 0
metrics = tracker.publish(epoch)
checkpoint.save_best_models_under_current_metrics(model, metrics,
tracker.metric_func)
log.info("Learning rate = %f" % model.learning_rate)
def test_epoch(
epoch: int,
model: BaseModel,
dataset,
device,
tracker: BaseTracker,
checkpoint: ModelCheckpoint,
visualizer: Visualizer,
debugging,
):
early_break = getattr(debugging, "early_break", False)
model.eval()
loaders = dataset.test_dataloaders
for loader in loaders:
stage_name = loader.dataset.name
tracker.reset(stage_name)
visualizer.reset(epoch, stage_name)
with Ctq(loader) as tq_test_loader:
for data in tq_test_loader:
with torch.no_grad():
model.set_input(data, device)
model.forward()
tracker.track(model)
tq_test_loader.set_postfix(**tracker.get_metrics(),
color=COLORS.TEST_COLOR)
if visualizer.is_active:
visualizer.save_visuals(model.get_current_visuals())
if early_break:
break
tracker.finalise()
metrics = tracker.publish(epoch)
tracker.print_summary()
checkpoint.save_best_models_under_current_metrics(
model, metrics, tracker.metric_func)
def eval_epoch(
epoch: int,
model: BaseModel,
dataset,
device,
tracker: BaseTracker,
checkpoint: ModelCheckpoint,
visualizer: Visualizer,
debugging,
):
early_break = getattr(debugging, "early_break", False)
model.eval()
tracker.reset("val")
visualizer.reset(epoch, "val")
loader = dataset.val_dataloader
with Ctq(loader) as tq_val_loader:
for data in tq_val_loader:
with torch.no_grad():
model.set_input(data, device)
model.forward()
tracker.track(model)
tq_val_loader.set_postfix(**tracker.get_metrics(),
color=COLORS.VAL_COLOR)
if visualizer.is_active:
visualizer.save_visuals(model.get_current_visuals())
if early_break:
break
metrics = tracker.publish(epoch)
tracker.print_summary()
checkpoint.save_best_models_under_current_metrics(model, metrics,
tracker.metric_func)
class Trainer:
"""
TorchPoints3d Trainer handles the logic between
- BaseModel,
- Dataset and its Tracker
- A custom ModelCheckpoint
- A custom Visualizer
It supports MC dropout - multiple voting_runs for val / test datasets
"""
def __init__(self, cfg):
self._cfg = cfg
self._initialize_trainer()
def _initialize_trainer(self):
# Enable CUDNN BACKEND
torch.backends.cudnn.enabled = self.enable_cudnn
if not self.has_training:
self._cfg.training = self._cfg
resume = bool(self._cfg.checkpoint_dir)
else:
resume = bool(self._cfg.training.checkpoint_dir)
# Get device
if self._cfg.training.cuda > -1 and torch.cuda.is_available():
device = "cuda"
torch.cuda.set_device(self._cfg.training.cuda)
else:
device = "cpu"
self._device = torch.device(device)
log.info("DEVICE : {}".format(self._device))
# Profiling
if self.profiling:
# Set the num_workers as torch.utils.bottleneck doesn't work well with it
self._cfg.training.num_workers = 0
# Start Wandb if public
if self.wandb_log:
Wandb.launch(self._cfg, self._cfg.wandb.public and self.wandb_log)
# Checkpoint
self._checkpoint: ModelCheckpoint = ModelCheckpoint(
self._cfg.training.checkpoint_dir,
self._cfg.model_name,
self._cfg.training.weight_name,
run_config=self._cfg,
resume=resume,
)
# Create model and datasets
if not self._checkpoint.is_empty:
self._dataset: BaseDataset = instantiate_dataset(
self._checkpoint.data_config)
self._model: BaseModel = self._checkpoint.create_model(
self._dataset, weight_name=self._cfg.training.weight_name)
else:
self._dataset: BaseDataset = instantiate_dataset(self._cfg.data)
self._model: BaseModel = instantiate_model(
copy.deepcopy(self._cfg), self._dataset)
self._model.instantiate_optimizers(self._cfg, "cuda" in device)
self._model.set_pretrained_weights()
if not self._checkpoint.validate(self._dataset.used_properties):
log.warning(
"The model will not be able to be used from pretrained weights without the corresponding dataset. Current properties are {}"
.format(self._dataset.used_properties))
self._checkpoint.dataset_properties = self._dataset.used_properties
log.info(self._model)
self._model.log_optimizers()
log.info(
"Model size = %i",
sum(param.numel() for param in self._model.parameters()
if param.requires_grad))
# Set dataloaders
self._dataset.create_dataloaders(
self._model,
self._cfg.training.batch_size,
self._cfg.training.shuffle,
self._cfg.training.num_workers,
self.precompute_multi_scale,
)
log.info(self._dataset)
# Verify attributes in dataset
self._model.verify_data(self._dataset.train_dataset[0])
# Choose selection stage
selection_stage = getattr(self._cfg, "selection_stage", "")
self._checkpoint.selection_stage = self._dataset.resolve_saving_stage(
selection_stage)
self._tracker: BaseTracker = self._dataset.get_tracker(
self.wandb_log, self.tensorboard_log)
if self.wandb_log:
Wandb.launch(self._cfg, not self._cfg.wandb.public
and self.wandb_log)
# Run training / evaluation
self._model = self._model.to(self._device)
if self.has_visualization:
self._visualizer = Visualizer(self._cfg.visualization,
self._dataset.num_batches,
self._dataset.batch_size,
os.getcwd())
def train(self):
self._is_training = True
for epoch in range(self._checkpoint.start_epoch,
self._cfg.training.epochs):
log.info("EPOCH %i / %i", epoch, self._cfg.training.epochs)
self._train_epoch(epoch)
if self.profiling:
return 0
if epoch % self.eval_frequency != 0:
continue
if self._dataset.has_val_loader:
self._test_epoch(epoch, "val")
if self._dataset.has_test_loaders:
self._test_epoch(epoch, "test")
# Single test evaluation in resume case
if self._checkpoint.start_epoch > self._cfg.training.epochs:
if self._dataset.has_test_loaders:
self._test_epoch(epoch, "test")
def eval(self, stage_name=""):
self._is_training = False
epoch = self._checkpoint.start_epoch
if self._dataset.has_val_loader:
if not stage_name or stage_name == "val":
self._test_epoch(epoch, "val")
if self._dataset.has_test_loaders:
if not stage_name or stage_name == "test":
self._test_epoch(epoch, "test")
def _finalize_epoch(self, epoch):
self._tracker.finalise(**self.tracker_options)
if self._is_training:
metrics = self._tracker.publish(epoch)
self._checkpoint.save_best_models_under_current_metrics(
self._model, metrics, self._tracker.metric_func)
if self.wandb_log and self._cfg.wandb.public:
Wandb.add_file(self._checkpoint.checkpoint_path)
if self._tracker._stage == "train":
log.info("Learning rate = %f" % self._model.learning_rate)
def _train_epoch(self, epoch: int):
self._model.train()
self._tracker.reset("train")
self._visualizer.reset(epoch, "train")
train_loader = self._dataset.train_dataloader
iter_data_time = time.time()
with Ctq(train_loader) as tq_train_loader:
for i, data in enumerate(tq_train_loader):
t_data = time.time() - iter_data_time
iter_start_time = time.time()
self._model.set_input(data, self._device)
self._model.optimize_parameters(epoch,
self._dataset.batch_size)
if i % 10 == 0:
with torch.no_grad():
self._tracker.track(self._model,
data=data,
**self.tracker_options)
tq_train_loader.set_postfix(**self._tracker.get_metrics(),
data_loading=float(t_data),
iteration=float(time.time() -
iter_start_time),
color=COLORS.TRAIN_COLOR)
if self._visualizer.is_active:
self._visualizer.save_visuals(
self._model.get_current_visuals())
iter_data_time = time.time()
if self.early_break:
break
if self.profiling:
if i > self.num_batches:
return 0
self._finalize_epoch(epoch)
def _test_epoch(self, epoch, stage_name: str):
voting_runs = self._cfg.get("voting_runs", 1)
if stage_name == "test":
loaders = self._dataset.test_dataloaders
else:
loaders = [self._dataset.val_dataloader]
self._model.eval()
if self.enable_dropout:
self._model.enable_dropout_in_eval()
for loader in loaders:
stage_name = loader.dataset.name
self._tracker.reset(stage_name)
if self.has_visualization:
self._visualizer.reset(epoch, stage_name)
if not self._dataset.has_labels(
stage_name) and not self.tracker_options.get(
"make_submission",
False): # No label, no submission -> do nothing
log.warning("No forward will be run on dataset %s." %
stage_name)
continue
for i in range(voting_runs):
with Ctq(loader) as tq_loader:
for data in tq_loader:
with torch.no_grad():
self._model.set_input(data, self._device)
with torch.cuda.amp.autocast(
enabled=self._model.is_mixed_precision()):
self._model.forward(epoch=epoch)
self._tracker.track(self._model,
data=data,
**self.tracker_options)
tq_loader.set_postfix(**self._tracker.get_metrics(),
color=COLORS.TEST_COLOR)
if self.has_visualization and self._visualizer.is_active:
self._visualizer.save_visuals(
self._model.get_current_visuals())
if self.early_break:
break
if self.profiling:
if i > self.num_batches:
return 0
self._finalize_epoch(epoch)
self._tracker.print_summary()
@property
def early_break(self):
return getattr(self._cfg.debugging, "early_break",
False) and self._is_training
@property
def profiling(self):
return getattr(self._cfg.debugging, "profiling", False)
@property
def num_batches(self):
return getattr(self._cfg.debugging, "num_batches", 50)
@property
def enable_cudnn(self):
return getattr(self._cfg.training, "enable_cudnn", True)
@property
def enable_dropout(self):
return getattr(self._cfg, "enable_dropout", True)
@property
def has_visualization(self):
return getattr(self._cfg, "visualization", False)
@property
def has_tensorboard(self):
return getattr(self._cfg, "tensorboard", False)
@property
def has_training(self):
return getattr(self._cfg, "training", None)
@property
def precompute_multi_scale(self):
return self._model.conv_type == "PARTIAL_DENSE" and getattr(
self._cfg.training, "precompute_multi_scale", False)
@property
def wandb_log(self):
if getattr(self._cfg, "wandb", False):
return getattr(self._cfg.wandb, "log", False)
else:
return False
@property
def tensorboard_log(self):
if self.has_tensorboard:
return getattr(self._cfg.tensorboard, "log", False)
else:
return False
@property
def tracker_options(self):
return self._cfg.get("tracker_options", {})
@property
def eval_frequency(self):
return self._cfg.get("eval_frequency", 1)
