Source code for catalyst.runners.hydra

from typing import Any, Callable, Dict, List
from collections import OrderedDict
from copy import deepcopy
import logging
import os

import hydra
from omegaconf import DictConfig, OmegaConf
from import DataLoader, Dataset

from catalyst.callbacks import CheckpointCallback, ICheckpointCallback
from catalyst.callbacks.batch_overfit import BatchOverfitCallback
from catalyst.callbacks.misc import CheckRunCallback, TimerCallback, TqdmCallback
from catalyst.core import Callback
from catalyst.core.logger import ILogger
from catalyst.core.misc import callback_isinstance
from catalyst.core.runner import IRunner
from catalyst.core.trial import ITrial
from catalyst.engines import IEngine
from catalyst.loggers.console import ConsoleLogger
from catalyst.loggers.csv import CSVLogger
from catalyst.loggers.tensorboard import TensorboardLogger
from catalyst.runners.misc import do_lr_linear_scaling, get_model_parameters
from catalyst.runners.supervised import ISupervisedRunner
from catalyst.typing import (
from import get_loaders_from_params
from catalyst.utils.misc import get_short_hash, get_utcnow_time
from catalyst.utils.torch import get_available_engine

logger = logging.getLogger(__name__)

[docs]class HydraRunner(IRunner): """Runner created from a hydra configuration file. Args: cfg: Hydra dictionary with parameters .. note:: Please follow the `minimal examples`_ sections for use cases. .. _`minimal examples`: """
[docs] def __init__(self, cfg: DictConfig): """Init.""" super().__init__() self._config: DictConfig = deepcopy(cfg) self._apex: bool = self._config.args.apex or False self._amp: bool = self._config.args.amp or False self._ddp: bool = self._config.args.ddp or False self._fp16: bool = self._config.args.fp16 or False self._seed: int = self._config.args.seed or 42 self._verbose: bool = self._config.args.verbose or False self._timeit: bool = self._config.args.timeit or False self._check: bool = self._config.args.check or False self._overfit: bool = self._config.args.overfit or False self._name: str = self._get_run_name() self._logdir: str = self._get_run_logdir() # @TODO: hack for catalyst-dl tune, could be done better self._trial = None
def _get_run_name(self) -> str: timestamp = get_utcnow_time() config_hash = get_short_hash(self._config) default_name = f"{timestamp}-{config_hash}" name = or default_name return name def _get_logdir(self, config: Dict) -> str: timestamp = get_utcnow_time() config_hash = get_short_hash(config) logdir = f"{timestamp}.{config_hash}" return logdir def _get_run_logdir(self) -> str: # noqa: WPS112 output = None exclude_tag = "none" logdir: str = self._config.args.logdir baselogdir: str = self._config.args.baselogdir if logdir is not None and logdir.lower() != exclude_tag: output = logdir elif baselogdir is not None and baselogdir.lower() != exclude_tag: logdir = self._get_logdir(self._config) output = f"{baselogdir}/{logdir}" return output @property def logdir(self) -> str: """Experiment's logdir for artefacts and logging.""" return self._logdir @property def seed(self) -> int: """Experiment's seed for reproducibility.""" return self._seed @property def name(self) -> str: """Returns run name for monitoring tools.""" return self._name @property def hparams(self) -> OrderedDict: """Hyperparameters""" return OrderedDict(OmegaConf.to_container(self._config, resolve=True)) @property def stages(self) -> List[str]: """Experiment's stage names.""" stages_keys = list(self._config.stages.keys()) return stages_keys
[docs] def get_stage_len(self, stage: str) -> int: """Returns number of epochs for the selected stage. Args: stage: current stage Returns: number of epochs in stage Example:: >>> runner.get_stage_len("pretraining") 3 """ return self._config.stages[stage].num_epochs or 1
[docs] def get_trial(self) -> ITrial: """Returns the trial for the run.""" return self._trial
[docs] def get_engine(self) -> IEngine: """Returns the engine for the run.""" engine_params = self._config.engine if engine_params is not None: engine = hydra.utils.instantiate(engine_params) else: engine = get_available_engine( fp16=self._fp16, ddp=self._ddp, amp=self._amp, apex=self._apex ) return engine
[docs] def get_loggers(self) -> Dict[str, ILogger]: """Returns the loggers for the run.""" loggers_params = self._config.loggers or {} loggers = {key: hydra.utils.instantiate(params) for key, params in loggers_params.items()} is_logger_exists = lambda logger_fn: any( isinstance(x, logger_fn) for x in loggers.values() ) if not is_logger_exists(ConsoleLogger): loggers["_console"] = ConsoleLogger() if self._logdir is not None and not is_logger_exists(CSVLogger): loggers["_csv"] = CSVLogger(logdir=self._logdir, use_logdir_postfix=True) if self._logdir is not None and not is_logger_exists(TensorboardLogger): loggers["_tensorboard"] = TensorboardLogger( logdir=self._logdir, use_logdir_postfix=True, ) return loggers
def _get_transform_from_params(self, params: DictConfig) -> Callable: transform: Callable = hydra.utils.instantiate(params) return transform
[docs] def get_transform(self, params: DictConfig) -> Callable: """ Returns the data transforms for a dataset. Args: params: parameters of the transformation Returns: Data transformations to use """ transform = self._get_transform_from_params(params) return transform
def _get_dataset_from_params(self, params: DictConfig) -> "Dataset": transform_params = params.pop("transform", None) if transform_params: transform = self.get_transform(transform_params) dataset = hydra.utils.instantiate(params, transform=transform) else: dataset = hydra.utils.instantiate(params) return dataset
[docs] def get_datasets(self, stage: str) -> "OrderedDict[str, Dataset]": """ Returns datasets for a given stage. Args: stage: stage name Returns: Dict: datasets objects """ datasets_params = self._config.stages[stage].loaders.datasets datasets_params = OmegaConf.to_container(datasets_params, resolve=True) datasets = { key: self._get_dataset_from_params(params) for key, params in datasets_params.items() } return OrderedDict(datasets)
def _get_sampler_from_params(self, **params) -> Sampler: sampler: Sampler = hydra.utils.instantiate(params) return sampler
[docs] def get_samplers(self, stage: str) -> "OrderedDict[str, Sampler]": """ Returns samplers for a given stage. Args: stage: stage name Returns: Dict of samplers """ samplers_params = self._config.stages[stage].loaders.get("samplers", {}) samplers_params = OmegaConf.to_container(samplers_params, resolve=True) samplers: Dict[str, Sampler] = { key: self._get_sampler_from_params(params) for key, params in samplers_params.items() } return samplers
[docs] def get_loaders(self, stage: str) -> Dict[str, DataLoader]: """ Returns loaders for a given stage. Args: stage: stage name Returns: Dict: loaders objects """ loaders_params = self._config.stages[stage].loaders loaders_params = OmegaConf.to_container(loaders_params, resolve=True) loaders_params.pop("datasets", None) loaders = get_loaders_from_params( datasets=self.get_datasets(stage=stage), initial_seed=self.seed, **loaders_params, ) return loaders
@staticmethod def _get_model_from_params(params: DictConfig) -> RunnerModel: params = deepcopy(params) is_key_value = params._key_value or False if is_key_value: model = { key: HydraRunner._get_model_from_params(value) for key, value in params.items() # noqa: WPS437 } # model = nn.ModuleDict(model) else: model: Model = hydra.utils.instantiate(params) return model
[docs] def get_model(self, stage: str) -> RunnerModel: """Returns the model for a given stage.""" assert "model" in self._config, "config must contain 'model' key" model_params: DictConfig = self._config.model model: RunnerModel = self._get_model_from_params(model_params) return model
@staticmethod def _get_criterion_from_params(params: DictConfig) -> RunnerCriterion: params = deepcopy(params) is_key_value = params._key_value or False if is_key_value: criterion = { key: HydraRunner._get_criterion_from_params(value) # noqa: WPS437 for key, value in params.items() } else: criterion: Criterion = hydra.utils.instantiate(params) return criterion
[docs] def get_criterion(self, stage: str) -> RunnerCriterion: """Returns the criterion for a given stage.""" if "criterion" not in self._config.stages[stage]: return None criterion_params: DictConfig = self._config.stages[stage].criterion criterion = self._get_criterion_from_params(criterion_params) return criterion
def _get_optimizer_from_params( self, model: RunnerModel, stage: str, params: DictConfig ) -> Optimizer: # @TODO 1: refactor; this method is too long params = deepcopy(params) # learning rate linear scaling lr_scaling_params = params.pop("lr_linear_scaling", None) if lr_scaling_params: loaders_params = self._config.stages[stage].loaders lr, lr_scaling = do_lr_linear_scaling( lr_scaling_params=lr_scaling_params, batch_size=loaders_params.get("batch_size", 1), per_gpu_scaling=loaders_params.get("per_gpu_scaling", False), ) params["lr"] = lr else: lr_scaling = 1.0 # getting layer-wise parameters layerwise_params = params.pop("layerwise_params", OrderedDict()) no_bias_weight_decay = params.pop("no_bias_weight_decay", True) # getting model parameters model_key = params.pop("_model", None) model_params = get_model_parameters( models=model, models_keys=model_key, layerwise_params=layerwise_params, no_bias_weight_decay=no_bias_weight_decay, lr_scaling=lr_scaling, ) # instantiate optimizer optimizer: Optimizer = hydra.utils.instantiate(params, params=model_params) return optimizer
[docs] def get_optimizer(self, model: RunnerModel, stage: str) -> RunnerOptimizer: """ Returns the optimizer for a given stage and epoch. Args: model: model or a dict of models stage: current stage name Returns: optimizer for selected stage and epoch """ if "optimizer" not in self._config.stages[stage]: return None optimizer_params: DictConfig = self._config.stages[stage].optimizer optimizer_params = deepcopy(optimizer_params) is_key_value = optimizer_params._key_value or False if is_key_value: optimizer = {} for key, params in optimizer_params.items(): optimizer[key] = self._get_optimizer_from_params( model=model, stage=stage, params=params ) else: optimizer = self._get_optimizer_from_params( model=model, stage=stage, params=optimizer_params ) return optimizer
@staticmethod def _get_scheduler_from_params( *, optimizer: RunnerOptimizer, params: DictConfig ) -> RunnerScheduler: params = deepcopy(params) is_key_value = params._key_value or False if is_key_value: scheduler: Dict[str, Scheduler] = {} for key, scheduler_params in params.items(): scheduler_params = deepcopy(scheduler_params) optimizer_key = scheduler_params._optimizer or None optim = optimizer[optimizer_key] if optimizer_key else optimizer scheduler[key] = HydraRunner._get_scheduler_from_params( # noqa: WPS437 optimizer=optim, params=scheduler_params ) else: optimizer_key = params._optimizer or None optimizer = optimizer[optimizer_key] if optimizer_key else optimizer scheduler = hydra.utils.instantiate(params, optimizer=optimizer) return scheduler
[docs] def get_scheduler(self, optimizer: RunnerOptimizer, stage: str) -> RunnerScheduler: """Returns the schedulers for a given stage.""" if "scheduler" not in self._config.stages[stage]: return None scheduler_params: DictConfig = self._config.stages[stage].scheduler scheduler = self._get_scheduler_from_params(optimizer=optimizer, params=scheduler_params) return scheduler
@staticmethod def _get_callback_from_params(params: DictConfig): params = deepcopy(params) wrapper_params = params.pop("_wrapper", None) target = params.pop("_target_") callback_class = hydra.utils.get_class(target) params = OmegaConf.to_container(params, resolve=True) callback = callback_class(**params) if wrapper_params is not None: wrapper_params["base_callback"] = callback callback = HydraRunner._get_callback_from_params(**wrapper_params) # noqa: WPS437 return callback
[docs] def get_callbacks(self, stage: str) -> "OrderedDict[str, Callback]": """Returns the callbacks for a given stage.""" callbacks_params = self._config.stages[stage].callbacks or {} callbacks: Dict[str, Callback] = { name: self._get_callback_from_params(callback_params) for name, callback_params in callbacks_params.items() } is_callback_exists = lambda callback_fn: any( callback_isinstance(x, callback_fn) for x in callbacks.values() ) if self._verbose and not is_callback_exists(TqdmCallback): callbacks["_verbose"] = TqdmCallback() if self._timeit and not is_callback_exists(TimerCallback): callbacks["_timer"] = TimerCallback() if self._check and not is_callback_exists(CheckRunCallback): callbacks["_check"] = CheckRunCallback() if self._overfit and not is_callback_exists(BatchOverfitCallback): callbacks["_overfit"] = BatchOverfitCallback() if self._logdir is not None and not is_callback_exists(ICheckpointCallback): callbacks["_checkpoint"] = CheckpointCallback( logdir=os.path.join(self._logdir, "checkpoints"), ) return callbacks
[docs]class SupervisedHydraRunner(ISupervisedRunner, HydraRunner): """HydraRunner for supervised tasks Args: cfg: Hydra dictionary with parameters input_key: key in ``runner.batch`` dict mapping for model input output_key: key for ``runner.batch`` to store model output target_key: key in ``runner.batch`` dict mapping for target loss_key: key for ``runner.batch_metrics`` to store criterion loss output .. note:: Please follow the `minimal examples`_ sections for use cases. .. _`minimal examples`: """
[docs] def __init__( self, cfg: DictConfig = None, input_key: Any = "features", output_key: Any = "logits", target_key: str = "targets", loss_key: str = "loss", ): """Init.""" ISupervisedRunner.__init__( self, input_key=input_key, output_key=output_key, target_key=target_key, loss_key=loss_key, ) HydraRunner.__init__(self, cfg=cfg)
__all__ = ["HydraRunner", "SupervisedHydraRunner"]