def test_deepspeed_run_configure_optimizers(tmpdir):
"""Test end to end that deepspeed works with defaults (without ZeRO as that requires compilation), whilst using
configure_optimizers for optimizers and schedulers."""
class TestCB(Callback):
def on_train_start(self, trainer, pl_module) -> None:
from deepspeed.runtime.zero.stage2 import FP16_DeepSpeedZeroOptimizer
assert isinstance(trainer.optimizers[0],
FP16_DeepSpeedZeroOptimizer)
assert isinstance(trainer.optimizers[0].optimizer, torch.optim.SGD)
assert isinstance(trainer.lr_schedulers[0]["scheduler"],
torch.optim.lr_scheduler.StepLR)
# check that the lr_scheduler config was preserved
assert trainer.lr_schedulers[0]["name"] == "Sean"
# Ensure DeepSpeed engine has initialized with our lr_scheduler
assert isinstance(trainer.model.lr_scheduler,
torch.optim.lr_scheduler.StepLR)
class TestModel(BoringModel):
def configure_optimizers(self):
[optimizer], [scheduler] = super().configure_optimizers()
return {
"optimizer": optimizer,
"lr_scheduler": {
"scheduler": scheduler,
"name": "Sean"
}
}
model = TestModel()
lr_monitor = LearningRateMonitor()
trainer = Trainer(
plugins=DeepSpeedPlugin(
), # disable ZeRO so our optimizers are not wrapped
default_root_dir=tmpdir,
gpus=1,
fast_dev_run=True,
precision=16,
callbacks=[TestCB(), lr_monitor],
)
trainer.fit(model)
assert lr_monitor.lrs == {"Sean": [0.1]}
_assert_save_model_is_equal(model, tmpdir, trainer)
def training_loop(train, valid, save_path, pl_module, callbacks,
n_epochs, checkpoint_callback, use_neptune=False, resume=True, limit_train_batches=None, neptune_tags="", neptune_name=""):
"""
Largely model/application agnostic training code.
"""
# Train with proper resuming
# Copy gin configs used, for reference, to the save folder
if not limit_train_batches:
limit_train_batches = len(train)
os.system("rm " + os.path.join(save_path, "*gin"))
for gin_config in sys.argv[2].split(";"):
os.system("cp {} {}/base_config.gin".format(gin_config, save_path))
with open(os.path.join(save_path, "config.gin"), "w") as f:
f.write(gin.operative_config_str())
hparams = parse_gin_config(os.path.join(save_path, 'config.gin'))
if 'train.callbacks' in hparams:
del hparams['train.callbacks']
# TODO: What is a less messy way to pass hparams? This is only that logging is aware of hyperparameters
pl_module._set_hparams(hparams)
pl_module._hparams_initial = copy.deepcopy(hparams)
loggers = []
loggers.append(pl_loggers.CSVLogger(save_path))
if use_neptune:
from pytorch_lightning.loggers import NeptuneLogger
loggers.append(NeptuneLogger(
api_key=NEPTUNE_TOKEN,
project_name=NEPTUNE_USER + "/" + NEPTUNE_PROJECT,
experiment_name=neptune_name if len(neptune_name) else os.path.basename(save_path),
tags=neptune_tags.split(',') if len(neptune_tags) else None,
))
callbacks += [MetaSaver(), Heartbeat(), LearningRateMonitor()]
trainer = pl.Trainer(
default_root_dir=save_path,
limit_train_batches=limit_train_batches,
max_epochs=n_epochs,
logger=loggers,
callbacks=callbacks,
log_every_n_steps=1,
checkpoint_callback=checkpoint_callback,
resume_from_checkpoint=os.path.join(save_path, 'last.ckpt')
if resume and os.path.exists(os.path.join(save_path, 'last.ckpt')) else None)
trainer.fit(pl_module, train, valid)
return trainer
def callback_objects(model_config, lr_logger=False):
callback_list = model_config["callbacks"]
callback_list = handle_config_cases(callback_list)
model_set = model_config["set"]
model_library = model_config["model_library"]
callback_object_list = [
find_model(model_set, callback, model_library)()
for callback in callback_list
]
if lr_logger:
lr_monitor = LearningRateMonitor(logging_interval='epoch')
callback_object_list = callback_object_list + [lr_monitor]
logging.info("Callbacks found")
return callback_object_list
def generateModel():
CHECKPOINT_ROOT = BASE / "checkpoints"
model = AlexnetFineTuning((3,224,224))
lr_monitor = LearningRateMonitor(logging_interval='epoch')
CHECKPOINT_PATH = CHECKPOINT_ROOT
checkpoint_callback = ModelCheckpoint(
dirpath = CHECKPOINT_PATH,
filename = '{epoch}-{val_acc:.2f}',
monitor = "val_acc",
save_last = True,
mode = "max",
save_top_k = -1,
period = 300
)
trainer = pl.Trainer(gpus=1, callbacks=[checkpoint_callback,lr_monitor],max_epochs=EPOCHS,
progress_bar_refresh_rate=0, weights_summary=None)
trainer.fit(model, train_loader, val_loader)
trainer.test(test_dataloaders=test_loader)
def test_lr_monitor_no_lr_scheduler(tmpdir):
tutils.reset_seed()
class CustomBoringModel(BoringModel):
def configure_optimizers(self):
optimizer = optim.SGD(self.parameters(), lr=0.1)
return optimizer
model = CustomBoringModel()
lr_monitor = LearningRateMonitor()
trainer = Trainer(
default_root_dir=tmpdir, max_epochs=2, limit_val_batches=0.1, limit_train_batches=0.5, callbacks=[lr_monitor]
)
with pytest.warns(RuntimeWarning, match="have no learning rate schedulers"):
trainer.fit(model)
assert trainer.state.finished, f"Training failed with {trainer.state}"
def test_lr_monitor_no_lr_scheduler(tmpdir):
tutils.reset_seed()
model = EvalModelTemplate()
lr_monitor = LearningRateMonitor()
trainer = Trainer(
default_root_dir=tmpdir,
max_epochs=2,
limit_val_batches=0.1,
limit_train_batches=0.5,
callbacks=[lr_monitor],
)
with pytest.warns(RuntimeWarning,
match='have no learning rate schedulers'):
result = trainer.fit(model)
assert result
def configure_callbacks(self):
cwd = hydra.utils.get_original_cwd()
filename = "{}_{}_{}_H{}_W{}".format(
self.args.exp_name,
self.args.arch.decoder,
self.args.arch.encoder,
self.args.arch.image_height,
self.args.arch.image_width,
)
checkpoint_callback = ModelCheckpoint(
monitor="val_loss",
mode="min",
dirpath=os.path.join(cwd, self.args.path2weight),
filename=filename,
save_top_k=1,
)
lr_monitor = LearningRateMonitor(logging_interval="step")
return [checkpoint_callback, lr_monitor]
def main(args):
pl.seed_everything(42)
# load configs
with open(args.cfg_path, 'r') as fp:
cfg = json.load(fp)
cfg_train = cfg['train']
print('### TRAIN CONFIGS:')
pprint(cfg_train)
print('### MODEL CONFIGS:')
pprint(cfg['model'])
#os.environ['CUDA_VISIBLE_DEVICES'] = cfg_train['trainer_kwargs']['gpus']
# init model
ModelClass = {
'cvae': CvaeInception,
'vae': VaeInception
}[cfg_train['type']]
model = ModelClass(cfg['model'])
# init data loader
dm = UrbanSoundsModule(
cfg['dataset'],
num_workers=cfg_train['num_workers'],
batch_size=cfg_train['batch_size'])
dm.setup()
# logger
log_name = 'usnds_{}_{}'.format(ModelClass.model_name, cfg_train['descr'])
logger = TensorBoardLogger(save_dir='logs', name=log_name)
# callbacks
early_stop = EarlyStopping(monitor='val_loss', patience=cfg_train['patience'])
lr_monitor = LearningRateMonitor(logging_interval='epoch')
# trainer
trainer = pl.Trainer(
max_epochs=cfg_train['max_epochs'],
logger=logger,
callbacks=[early_stop, lr_monitor],
**cfg_train['trainer_kwargs'])
# train
trainer.fit(model=model, datamodule=dm)
def main():
pl.seed_everything(1234)
# ------------
# args
# ------------
parser = get_parser()
parser = MrcSpanProposal.add_model_specific_args(parser)
parser = pl.Trainer.add_argparse_args(parser)
args = parser.parse_args()
# ------------
# model
# ------------
model = MrcSpanProposal(args)
# load pretrained_model
if args.pretrained:
model.load_state_dict(
torch.load(args.pretrained, map_location=torch.device('cpu'))["state_dict"]
)
# call backs
checkpoint_callback = ModelCheckpoint(
monitor=f'val_top{MrcSpanProposal.acc_topk}_acc',
dirpath=args.default_root_dir,
save_top_k=10,
save_last=True,
mode='max',
verbose=True
)
lr_monitor = LearningRateMonitor(logging_interval='step')
print_model = ModelPrintCallback(print_modules=["model"])
callbacks = [checkpoint_callback, lr_monitor, print_model]
if args.freeze_bert:
callbacks.append(EvalCallback(["model.bert"]))
trainer = pl.Trainer.from_argparse_args(
args,
callbacks=callbacks,
replace_sampler_ddp=False
)
trainer.fit(model)
def test_lr_monitor_no_lr_scheduler_multi_lrs(tmpdir, logging_interval: str):
"""Test that learning rates are extracted and logged for multi optimizers but no lr scheduler."""
tutils.reset_seed()
class CustomBoringModel(BoringModel):
def training_step(self, batch, batch_idx, optimizer_idx):
return super().training_step(batch, batch_idx)
def configure_optimizers(self):
optimizer1 = optim.Adam(self.parameters(), lr=1e-2)
optimizer2 = optim.Adam(self.parameters(), lr=1e-2)
return [optimizer1, optimizer2]
model = CustomBoringModel()
model.training_epoch_end = None
lr_monitor = LearningRateMonitor(logging_interval=logging_interval)
log_every_n_steps = 2
trainer = Trainer(
default_root_dir=tmpdir,
max_epochs=2,
log_every_n_steps=log_every_n_steps,
limit_train_batches=7,
limit_val_batches=0.1,
callbacks=[lr_monitor],
)
trainer.fit(model)
assert lr_monitor.lrs, "No learning rates logged"
assert len(lr_monitor.lrs) == len(trainer.optimizers)
assert list(lr_monitor.lrs) == [
"lr-Adam", "lr-Adam-1"
], "Names of learning rates not set correctly"
if logging_interval == "step":
# divide by 2 because we have 2 optimizers
expected_number_logged = trainer.global_step // 2 // log_every_n_steps
if logging_interval == "epoch":
expected_number_logged = trainer.max_epochs
assert all(
len(lr) == expected_number_logged for lr in lr_monitor.lrs.values())
def train(cfg):
datamodule_args = {}
if cfg.transforms.train:
train_transforms = [
hydra.utils.instantiate(t) for t in cfg.transforms.train
]
datamodule_args["train_transforms"] = train_transforms
if cfg.transforms.val:
val_transforms = [
hydra.utils.instantiate(t) for t in cfg.transforms.val
]
datamodule_args["val_transforms"] = val_transforms
data_module = hydra.utils.instantiate(cfg.dataset, **datamodule_args)
data_module.prepare_data()
lr_scheduler = resolve_steps_per_epoch(cfg,
len_train=data_module.len_train)
model = FlowerClassifier(
**cfg.model,
optimizer_config=cfg.optimizer,
lr_scheduler_config=lr_scheduler,
batch_size=cfg.dataset.batch_size,
)
logger = hydra.utils.instantiate(cfg.trainer.logger) or False
lr_logger = LearningRateMonitor(logging_interval="step")
callbacks = [lr_logger]
# checkpoint callback requires dynamic configuration
experiment = getattr(logger, "experiment", None)
logger_dir = getattr(experiment, "dir", "logger")
checkpoints_dir = os.path.join(logger_dir, "{epoch}")
checkpoint_callback = hydra.utils.instantiate(
cfg.trainer.checkpoint_callback, filepath=checkpoints_dir) or False
if checkpoint_callback:
callbacks.append(checkpoint_callback)
trainer_args = {
**cfg.trainer,
"logger": logger,
"callbacks": callbacks,
}
trainer = Trainer(**trainer_args)
trainer.fit(model, datamodule=data_module)
def test_lr_monitor_custom_name(tmpdir):
class TestModel(BoringModel):
def configure_optimizers(self):
optimizer, [scheduler] = super().configure_optimizers()
lr_scheduler = {'scheduler': scheduler, 'name': 'my_logging_name'}
return optimizer, [lr_scheduler]
lr_monitor = LearningRateMonitor()
trainer = Trainer(
default_root_dir=tmpdir,
max_epochs=2,
limit_val_batches=0.1,
limit_train_batches=0.5,
callbacks=[lr_monitor],
progress_bar_refresh_rate=0,
weights_summary=None,
)
trainer.fit(TestModel())
assert lr_monitor.lr_sch_names == list(lr_monitor.lrs.keys()) == ['my_logging_name']
def train(args, trainer_args, model_args):
# df = pd.read_csv(os.path.join(args['data_directory'], 'train.csv'))
# train_df, val_df = model_selection.train_test_split(df, test_size=0.1, random_state=42, stratify=df.label.values)
# train_df.reset_index(inplace=True, drop=True)
# val_df.reset_index(inplace=True, drop=True)
datamodule = CassavaDataModule(batch_size=args['batch_size'],
data_dir=args['data_directory'],
num_workers=4,
sample_size=args['sample_size'])
classifier_list = [Resnet18, Resnet50, EfficientNetB1, VisTransformer]
classifier_names = [elem.__name__.lower() for elem in classifier_list]
classifier_model_name = args['model_type']
classifier = classifier_list[classifier_names.index(classifier_model_name)]
classifier_model_dir = os.path.join('logs', classifier_model_name)
#trainer_args = {'max_epochs' :8, 'profiler' : 'simple', 'precision' :16, 'gradient_clip_val' : 100, 'gpus':1 }
#model_args = {'lr' : 5e-5}
load_pretrained = False
load_pretrained = os.path.exists(classifier_model_dir) and load_pretrained
checkpoints = list(
filter(lambda x: '.ckpt' in x,
os.listdir(classifier_model_dir))) if load_pretrained else []
load_pretrained = load_pretrained and len(checkpoints) > 0
if load_pretrained:
checkpoint_path = os.path.join(classifier_model_dir, checkpoints[-1])
model = classifier.load_from_checkpoint(checkpoint_path)
else:
model = classifier(**model_args)
print(model)
logger = TensorBoardLogger("logs",
name=classifier_model_name,
log_graph=True)
lr_monitor = LearningRateMonitor(logging_interval='step')
model_chkpt = ModelCheckpoint(dirpath=classifier_model_dir,
monitor='val_acc_epoch',
filename='{epoch}-{val_acc_epoch:.2f}',
verbose=True)
early_stopper = EarlyStopping(monitor='val_acc_epoch',
patience=6,
verbose=True)
trainer = pl.Trainer(logger=logger,
callbacks=[lr_monitor, model_chkpt, early_stopper],
**trainer_args)
trainer.fit(model, datamodule)
def test_lightning_cli_config_and_subclass_mode(tmpdir):
input_config = {
"fit": {
"model": {
"class_path": "tests.helpers.BoringModel"
},
"data": {
"class_path": "tests.helpers.BoringDataModule",
"init_args": {
"data_dir": str(tmpdir)
}
},
"trainer": {
"default_root_dir": str(tmpdir),
"max_epochs": 1,
"weights_summary": None
},
}
}
config_path = tmpdir / "config.yaml"
with open(config_path, "w") as f:
f.write(yaml.dump(input_config))
with mock.patch("sys.argv", ["any.py", "--config", str(config_path)]):
cli = LightningCLI(
BoringModel,
BoringDataModule,
subclass_mode_model=True,
subclass_mode_data=True,
trainer_defaults={"callbacks": LearningRateMonitor()},
)
config_path = tmpdir / "lightning_logs" / "version_0" / "config.yaml"
assert os.path.isfile(config_path)
with open(config_path) as f:
loaded_config = yaml.safe_load(f.read())
loaded_config = loaded_config["fit"]
cli_config = cli.config["fit"]
assert loaded_config["model"] == cli_config["model"]
assert loaded_config["data"] == cli_config["data"]
assert loaded_config["trainer"] == cli_config["trainer"]
def get_callbacks(
logging_interval: str,
experiment_type: str,
save_top_k: int = 1,
period: int = 1,
monitor: str = "checkpoint_saving_loss",
):
upload_comet_logs = UploadCometLogs(
logging_interval, get_console_logger("callback"), experiment_type
)
lr_monitor = LearningRateMonitor(logging_interval=logging_interval)
# saving the best model as per the validation loss.
checkpoint_callback = UpdatedModelCheckpoint(
save_top_k=save_top_k, period=period, monitor=monitor
)
return {
"callbacks": [lr_monitor, upload_comet_logs],
"checkpoint_callback": checkpoint_callback,
}
def test_lr_monitor_single_lr(tmpdir):
"""Test that learning rates are extracted and logged for single lr scheduler."""
tutils.reset_seed()
model = BoringModel()
lr_monitor = LearningRateMonitor()
trainer = Trainer(default_root_dir=tmpdir,
max_epochs=2,
limit_val_batches=0.1,
limit_train_batches=0.5,
callbacks=[lr_monitor])
trainer.fit(model)
assert lr_monitor.lrs, "No learning rates logged"
assert all(v is None for v in lr_monitor.last_momentum_values.values()
), "Momentum should not be logged by default"
assert len(lr_monitor.lrs) == len(trainer.lr_scheduler_configs)
assert list(lr_monitor.lrs) == ["lr-SGD"]
def test_lr_monitor_custom_name(tmpdir):
class TestModel(BoringModel):
def configure_optimizers(self):
optimizer, [scheduler] = super().configure_optimizers()
lr_scheduler = {"scheduler": scheduler, "name": "my_logging_name"}
return optimizer, [lr_scheduler]
lr_monitor = LearningRateMonitor()
trainer = Trainer(
default_root_dir=tmpdir,
max_epochs=2,
limit_val_batches=0.1,
limit_train_batches=0.5,
callbacks=[lr_monitor],
enable_progress_bar=False,
enable_model_summary=False,
)
trainer.fit(TestModel())
assert list(lr_monitor.lrs) == ["my_logging_name"]
def _get_trainer_callbacks(cfg: CfgNode) -> List[Callback]:
"""Gets the trainer callbacks based on the given D2Go Config.
Args:
cfg: The normalized ConfigNode for this D2Go Task.
Returns:
A list of configured Callbacks to be used by the Lightning Trainer.
"""
callbacks: List[Callback] = [
LearningRateMonitor(logging_interval="step"),
ModelCheckpoint(
dirpath=cfg.OUTPUT_DIR,
save_last=True,
),
]
if cfg.QUANTIZATION.QAT.ENABLED:
callbacks.append(QuantizationAwareTraining.from_config(cfg))
return callbacks
def train(params: Params):
seed_everything(params.d.seed)
tb_logger = TensorBoardLogger(
params.t.save_dir,
name=f'011_popularity',
version=str(int(time())),
)
log_dir = Path(tb_logger.log_dir)
log_dir.mkdir(parents=True, exist_ok=True)
logger = getLogger('lightning')
logger.addHandler(FileHandler(log_dir / 'train.log'))
logger.info(params.pretty())
callbacks = [
LearningRateMonitor(),
]
if params.t.checkpoint_callback:
callbacks.append(ModelCheckpoint(
monitor=None,
verbose=True,
), )
trainer = pl.Trainer(
max_epochs=params.t.epochs,
gpus=params.t.gpus,
tpu_cores=params.t.num_tpu_cores,
logger=tb_logger,
precision=params.t.precision,
resume_from_checkpoint=params.t.resume_from_checkpoint,
weights_save_path=params.t.weights_save_path,
checkpoint_callback=params.t.weights_save_path is not None,
callbacks=callbacks,
deterministic=True,
benchmark=True,
accumulate_grad_batches=params.t.accumulate_grad_batches,
val_check_interval=params.t.val_check_interval,
)
net = PLModule(params.m.to_dict())
dm = PopularityDataModule(params.d)
trainer.fit(net, datamodule=dm)
def test_lr_monitor_single_lr_with_momentum(tmpdir, opt):
"""
Test that learning rates and momentum are extracted and logged for single lr scheduler.
"""
class LogMomentumModel(BoringModel):
def __init__(self, opt):
super().__init__()
self.opt = opt
def configure_optimizers(self):
if self.opt == 'SGD':
opt_kwargs = {'momentum': 0.9}
elif self.opt == 'Adam':
opt_kwargs = {'betas': (0.9, 0.999)}
optimizer = getattr(optim, self.opt)(self.parameters(),
lr=1e-2,
**opt_kwargs)
lr_scheduler = optim.lr_scheduler.OneCycleLR(optimizer,
max_lr=1e-2,
total_steps=10_000)
return [optimizer], [lr_scheduler]
model = LogMomentumModel(opt=opt)
lr_monitor = LearningRateMonitor(log_momentum=True)
trainer = Trainer(
default_root_dir=tmpdir,
max_epochs=2,
limit_val_batches=2,
limit_train_batches=5,
log_every_n_steps=1,
callbacks=[lr_monitor],
)
trainer.fit(model)
assert trainer.state == TrainerState.FINISHED, f"Training failed with {trainer.state}"
assert all(v is not None for v in lr_monitor.last_momentum_values.values()), \
'Expected momentum to be logged'
assert len(lr_monitor.last_momentum_values) == len(trainer.lr_schedulers), \
'Number of momentum values logged does not match number of lr schedulers'
assert all(k == f'lr-{opt}-momentum' for k in lr_monitor.last_momentum_values.keys()), \
'Names of momentum values not set correctly'
def train_and_test(model, dm, logger):
ES = EarlyStopping(
monitor="train_loss",
min_delta=0.001,
patience=10,
verbose=True,
mode="min",
strict=True,
)
LRM = LearningRateMonitor("epoch")
tag = "unsupervised_v1"
CKPT = ModelCheckpoint(
dirpath="/gaia/models",
filename=tag,
monitor="train_loss",
mode="min",
verbose=True,
)
LSS = LatentSpaceSaver()
trainer = pl.Trainer(
auto_lr_find=False,
gpus=1,
auto_select_gpus=False,
gradient_clip_val=1.0,
log_gpu_memory="min_max",
reload_dataloaders_every_epoch=True,
callbacks=[ES, LRM, CKPT, LSS, Plotter()],
accelerator="ddp",
log_every_n_steps=150,
flush_logs_every_n_steps=300,
terminate_on_nan=True,
track_grad_norm=2,
weights_summary="full",
profiler="simple",
replace_sampler_ddp=True,
logger=logger,
)
# trainer.tune(model=model, datamodule=dm)
trainer.fit(model=model, datamodule=dm)
trainer.test(model=model, datamodule=dm, verbose=True)
def train(args):
print('Training arguments: ', args)
seed_everything(args.seed)
os.makedirs(args.log_dir, exist_ok=True)
data = SNLIData(batch_size=args.batch_size)
train_loader, val_loader, test_loader = data.get_iters()
checkpoint_callback = ModelCheckpoint(monitor='val_loss')
trainer = Trainer(
default_root_dir=args.log_dir,
limit_train_batches=args.
limit_train_batches, # for testing with less data
fast_dev_run=False, # for checking with 1 batch,
callbacks=[
LearningRateMonitor(logging_interval='step'), checkpoint_callback
],
logger=TensorBoardLogger(args.log_dir, name=args.encoder_type),
gpus=1 if torch.cuda.is_available() else 0,
max_epochs=args.epochs,
progress_bar_refresh_rate=args.refresh_rate)
model = NLINet(encoder_type=args.encoder_type,
enc_hidden_dim=args.enc_hidden_dim,
cls_hidden_dim=args.cls_hidden_dim,
lr=args.lr,
dataset_sizes=data.sizes)
# Training
trainer.fit(model, train_loader, val_loader)
print('Best checkpoint:', checkpoint_callback.best_model_path)
# Testing
# model = NLINet.load_from_checkpoint(
# trainer.checkpoint_callback.best_model_path)
test_result = trainer.test(model,
test_dataloaders=test_loader,
verbose=True)
return test_result
def test_lr_monitor_custom_pg_name(tmpdir):
class TestModel(BoringModel):
def configure_optimizers(self):
optimizer = torch.optim.SGD([{"params": list(self.layer.parameters()), "name": "linear"}], lr=0.1)
lr_scheduler = torch.optim.lr_scheduler.StepLR(optimizer, step_size=1)
return [optimizer], [lr_scheduler]
lr_monitor = LearningRateMonitor()
trainer = Trainer(
default_root_dir=tmpdir,
max_epochs=2,
limit_val_batches=2,
limit_train_batches=2,
callbacks=[lr_monitor],
progress_bar_refresh_rate=0,
weights_summary=None,
)
trainer.fit(TestModel())
assert lr_monitor.lr_sch_names == ["lr-SGD"]
assert list(lr_monitor.lrs) == ["lr-SGD/linear"]
def create_trainer(self, logger=None, callbacks=[], **kwargs):
"""Create a pytorch lightning training by reading config files
Args:
callbacks (list): a list of pytorch-lightning callback classes
"""
#If val data is passed, monitor learning rate and setup classification metrics
if not self.config["validation"]["csv_file"] is None:
if logger is not None:
lr_monitor = LearningRateMonitor(logging_interval='epoch')
callbacks.append(lr_monitor)
self.trainer = pl.Trainer(logger=logger,
max_epochs=self.config["train"]["epochs"],
gpus=self.config["gpus"],
enable_checkpointing=False,
accelerator=self.config["distributed_backend"],
fast_dev_run=self.config["train"]["fast_dev_run"],
callbacks=callbacks,
**kwargs)
def train():
model = SDDSegModel()
checkpoint_callback = pl.callbacks.ModelCheckpoint(
dirpath='checkpoints_sdd/deeplabv3_effnet-b2/',
save_top_k=1,
verbose=True,
monitor='val_loss',
mode='min',
prefix='')
lr_monitor = LearningRateMonitor(logging_interval='step')
trainer = pl.Trainer(
gpus=1,
callbacks=[lr_monitor],
checkpoint_callback=checkpoint_callback,
num_sanity_val_steps=-1,
log_every_n_steps=4,
max_epochs=22,
resume_from_checkpoint=
'checkpoints_sdd/deeplabv3_effnet-b2/epoch=21-step=2639.ckpt')
trainer.fit(model)
def _get_trainer(project_parameters):
callbacks = [
ModelCheckpoint(monitor='validation accuracy', mode='max'),
LearningRateMonitor(logging_interval='epoch', log_momentum=True)
]
if project_parameters.use_early_stopping:
callbacks.append(
EarlyStopping(monitor='validation loss',
patience=project_parameters.patience,
mode='min'))
return Trainer(callbacks=callbacks,
gpus=project_parameters.gpus,
max_epochs=project_parameters.train_iter,
weights_summary=project_parameters.weights_summary,
profiler=project_parameters.profiler,
deterministic=True,
check_val_every_n_epoch=project_parameters.val_iter,
default_root_dir=project_parameters.save_path,
num_sanity_val_steps=0,
precision=project_parameters.precision)
def train_regression(args_lightning_model_parameters,
epochs,
gpus=1,
es_patience=30):
net = UNet(**args_lightning_model_parameters)
torchsummary.summary(net, (12, 288, 288), device="cpu")
# return
default_save_path = "output/lightning/precip_regression"
if not os.path.exists(default_save_path):
os.makedirs(default_save_path)
checkpoint_callback = ModelCheckpoint(
filepath=os.getcwd() + "/" + default_save_path + "/" +
net.__class__.__name__ + "/{epoch}-{val_loss:.6f}",
save_top_k=-1,
verbose=False,
monitor='val_loss',
mode='min',
prefix=net.__class__.__name__ + "_rain_threshhold_50_")
lr_logger = LearningRateMonitor()
tb_logger = loggers.TensorBoardLogger(save_dir=default_save_path,
name=net.__class__.__name__)
earlystopping_callback = EarlyStopping(
monitor='val_loss',
mode='min',
patience=es_patience,
# is effectively half (due to a bug in pytorch-lightning)
)
trainer = pl.Trainer(gpus=gpus,
weights_summary=None,
max_epochs=epochs,
weights_save_path=default_save_path,
logger=tb_logger,
callbacks=[lr_logger, earlystopping_callback],
val_check_interval=0.25,
overfit_batches=0.1)
# resume_from_checkpoint=resume_from_checkpoint,
trainer.fit(net)
return
def test_lr_monitor_param_groups(tmpdir):
"""Test that learning rates are extracted and logged for single lr scheduler."""
tutils.reset_seed()
class CustomClassificationModel(ClassificationModel):
def configure_optimizers(self):
param_groups = [
{
"params": list(self.parameters())[:2],
"lr": self.lr * 0.1
},
{
"params": list(self.parameters())[2:],
"lr": self.lr
},
]
optimizer = optim.Adam(param_groups)
lr_scheduler = optim.lr_scheduler.StepLR(optimizer, 1, gamma=0.1)
return [optimizer], [lr_scheduler]
model = CustomClassificationModel()
dm = ClassifDataModule()
lr_monitor = LearningRateMonitor()
trainer = Trainer(default_root_dir=tmpdir,
max_epochs=2,
limit_val_batches=0.1,
limit_train_batches=0.5,
callbacks=[lr_monitor])
trainer.fit(model, datamodule=dm)
assert trainer.state.finished, f"Training failed with {trainer.state}"
assert lr_monitor.lrs, "No learning rates logged"
assert len(lr_monitor.lrs) == 2 * len(
trainer.lr_schedulers
), "Number of learning rates logged does not match number of param groups"
assert lr_monitor.lr_sch_names == ["lr-Adam"]
assert list(lr_monitor.lrs.keys()) == [
"lr-Adam/pg1", "lr-Adam/pg2"
], "Names of learning rates not set correctly"
def test_lr_monitor_single_lr(tmpdir):
"""Test that learning rates are extracted and logged for single lr scheduler."""
tutils.reset_seed()
model = BoringModel()
lr_monitor = LearningRateMonitor()
trainer = Trainer(
default_root_dir=tmpdir, max_epochs=2, limit_val_batches=0.1, limit_train_batches=0.5, callbacks=[lr_monitor]
)
trainer.fit(model)
assert trainer.state.finished, f"Training failed with {trainer.state}"
assert lr_monitor.lrs, "No learning rates logged"
assert all(v is None for v in lr_monitor.last_momentum_values.values()), "Momentum should not be logged by default"
assert len(lr_monitor.lrs) == len(
trainer.lr_schedulers
), "Number of learning rates logged does not match number of lr schedulers"
assert (
lr_monitor.lr_sch_names == list(lr_monitor.lrs.keys()) == ["lr-SGD"]
), "Names of learning rates not set correctly"
def train(self,
log_dir=os.path.abspath(os.path.join(os.path.dirname(__file__), '../data/logs/ocr')),
seed: int = None
) -> NPOcrNet:
"""
TODO: describe method
"""
if seed is not None:
aug_seed(seed)
pl.seed_everything(seed)
self.create_model()
checkpoint_callback = ModelCheckpoint(dirpath=log_dir, monitor='val_loss')
lr_monitor = LearningRateMonitor(logging_interval='step')
self.trainer = pl.Trainer(max_epochs=self.epochs,
gpus=self.gpus,
callbacks=[checkpoint_callback, lr_monitor],
weights_summary=None)
self.trainer.fit(self.model, self.dm)
print("[INFO] best model path", checkpoint_callback.best_model_path)
self.trainer.test()
return self.model
