Deci-AI
/
super-gradients
connected to https://github.com/Deci-AI/super-gradients.git


  
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            import unittest

import numpy as np
import torch
from torch.optim import SGD
from torch.optim.lr_scheduler import ReduceLROnPlateau, MultiStepLR
from torchmetrics import F1Score

from super_gradients import Trainer
from super_gradients.training import models
from super_gradients.training.dataloaders.dataloaders import classification_test_dataloader
from super_gradients.training.metrics import Accuracy, Top5, ToyTestClassificationMetric
from super_gradients.training.utils.callbacks import LRSchedulerCallback, Phase


class TrainWithInitializedObjectsTest(unittest.TestCase):
    """
    Unit test for training with initialized objects passed as parameters.
    """

    def test_train_with_external_criterion(self):
        trainer = Trainer("external_criterion_test")
        dataloader = classification_test_dataloader(batch_size=10)

        model = models.get("resnet18", arch_params={"num_classes": 5})
        train_params = {
            "max_epochs": 2,
            "lr_updates": [1],
            "lr_decay_factor": 0.1,
            "lr_mode": "step",
            "lr_warmup_epochs": 0,
            "initial_lr": 0.1,
            "loss": torch.nn.CrossEntropyLoss(),
            "optimizer": "SGD",
            "criterion_params": {},
            "optimizer_params": {"weight_decay": 1e-4, "momentum": 0.9},
            "train_metrics_list": [Accuracy()],
            "valid_metrics_list": [Accuracy()],
            "metric_to_watch": "Accuracy",
            "greater_metric_to_watch_is_better": True,
        }
        trainer.train(model=model, training_params=train_params, train_loader=dataloader, valid_loader=dataloader)

    def test_train_with_external_optimizer(self):
        trainer = Trainer("external_optimizer_test")
        dataloader = classification_test_dataloader(batch_size=10)

        model = models.get("resnet18", arch_params={"num_classes": 5})
        optimizer = SGD(params=model.parameters(), lr=0.1)
        train_params = {
            "max_epochs": 2,
            "lr_updates": [1],
            "lr_decay_factor": 0.1,
            "lr_mode": "step",
            "lr_warmup_epochs": 0,
            "initial_lr": 0.1,
            "loss": "cross_entropy",
            "optimizer": optimizer,
            "criterion_params": {},
            "optimizer_params": {"weight_decay": 1e-4, "momentum": 0.9},
            "train_metrics_list": [Accuracy(), Top5()],
            "valid_metrics_list": [Accuracy(), Top5()],
            "metric_to_watch": "Accuracy",
            "greater_metric_to_watch_is_better": True,
        }
        trainer.train(model=model, training_params=train_params, train_loader=dataloader, valid_loader=dataloader)

    def test_train_with_external_scheduler(self):
        trainer = Trainer("external_scheduler_test")
        dataloader = classification_test_dataloader(batch_size=10)

        lr = 0.3
        model = models.get("resnet18", arch_params={"num_classes": 5})
        optimizer = SGD(params=model.parameters(), lr=lr)
        lr_scheduler = MultiStepLR(optimizer=optimizer, milestones=[1, 2], gamma=0.1)
        phase_callbacks = [LRSchedulerCallback(lr_scheduler, Phase.TRAIN_EPOCH_END)]

        train_params = {
            "max_epochs": 2,
            "phase_callbacks": phase_callbacks,
            "lr_warmup_epochs": 0,
            "initial_lr": lr,
            "loss": "cross_entropy",
            "optimizer": optimizer,
            "criterion_params": {},
            "train_metrics_list": [Accuracy(), Top5()],
            "valid_metrics_list": [Accuracy(), Top5()],
            "metric_to_watch": "Accuracy",
            "greater_metric_to_watch_is_better": True,
        }
        trainer.train(model=model, training_params=train_params, train_loader=dataloader, valid_loader=dataloader)
        self.assertTrue(lr_scheduler.get_last_lr()[0] == lr * 0.1 * 0.1)

    def test_train_with_external_scheduler_class(self):
        trainer = Trainer("external_scheduler_test")
        dataloader = classification_test_dataloader(batch_size=10)

        model = models.get("resnet18", arch_params={"num_classes": 5})
        optimizer = SGD  # a class - not an instance

        train_params = {
            "max_epochs": 2,
            "lr_warmup_epochs": 0,
            "initial_lr": 0.3,
            "loss": "cross_entropy",
            "optimizer": optimizer,
            "criterion_params": {},
            "train_metrics_list": [Accuracy(), Top5()],
            "valid_metrics_list": [Accuracy(), Top5()],
            "metric_to_watch": "Accuracy",
            "greater_metric_to_watch_is_better": True,
        }
        trainer.train(model=model, training_params=train_params, train_loader=dataloader, valid_loader=dataloader)

    def test_train_with_reduce_on_plateau(self):
        trainer = Trainer("external_reduce_on_plateau_scheduler_test")
        dataloader = classification_test_dataloader(batch_size=10)

        lr = 0.3
        model = models.get("resnet18", arch_params={"num_classes": 5})
        optimizer = SGD(params=model.parameters(), lr=lr)
        lr_scheduler = ReduceLROnPlateau(optimizer=optimizer, patience=0)
        phase_callbacks = [LRSchedulerCallback(lr_scheduler, Phase.VALIDATION_EPOCH_END, "ToyTestClassificationMetric")]

        train_params = {
            "max_epochs": 2,
            "phase_callbacks": phase_callbacks,
            "lr_warmup_epochs": 0,
            "initial_lr": lr,
            "loss": "cross_entropy",
            "optimizer": optimizer,
            "criterion_params": {},
            "train_metrics_list": [Accuracy(), Top5()],
            "valid_metrics_list": [Accuracy(), Top5(), ToyTestClassificationMetric()],
            "metric_to_watch": "Accuracy",
            "greater_metric_to_watch_is_better": True,
        }
        trainer.train(model=model, training_params=train_params, train_loader=dataloader, valid_loader=dataloader)
        self.assertTrue(lr_scheduler._last_lr[0] == lr * 0.1)

    def test_train_with_external_metric(self):
        trainer = Trainer("external_metric_test")
        dataloader = classification_test_dataloader(batch_size=10)

        model = models.get("resnet18", arch_params={"num_classes": 5})
        train_params = {
            "max_epochs": 2,
            "lr_updates": [1],
            "lr_decay_factor": 0.1,
            "lr_mode": "step",
            "lr_warmup_epochs": 0,
            "initial_lr": 0.1,
            "loss": "cross_entropy",
            "optimizer": "SGD",
            "criterion_params": {},
            "optimizer_params": {"weight_decay": 1e-4, "momentum": 0.9},
            "train_metrics_list": [F1Score()],
            "valid_metrics_list": [F1Score()],
            "metric_to_watch": "F1Score",
            "greater_metric_to_watch_is_better": True,
        }
        trainer.train(model=model, training_params=train_params, train_loader=dataloader, valid_loader=dataloader)

    def test_train_with_external_dataloaders(self):
        trainer = Trainer("external_data_loader_test")

        batch_size = 5
        trainset = torch.utils.data.TensorDataset(torch.Tensor(np.random.random((10, 3, 32, 32))), torch.LongTensor(np.zeros((10))))

        valset = torch.utils.data.TensorDataset(torch.Tensor(np.random.random((10, 3, 32, 32))), torch.LongTensor(np.zeros((10))))

        train_loader = torch.utils.data.DataLoader(trainset, batch_size=batch_size)
        val_loader = torch.utils.data.DataLoader(valset, batch_size=batch_size)

        model = models.get("resnet18", num_classes=5)
        train_params = {
            "max_epochs": 2,
            "lr_updates": [1],
            "lr_decay_factor": 0.1,
            "lr_mode": "step",
            "lr_warmup_epochs": 0,
            "initial_lr": 0.1,
            "loss": "cross_entropy",
            "optimizer": "SGD",
            "criterion_params": {},
            "optimizer_params": {"weight_decay": 1e-4, "momentum": 0.9},
            "train_metrics_list": [F1Score()],
            "valid_metrics_list": [F1Score()],
            "metric_to_watch": "F1Score",
            "greater_metric_to_watch_is_better": True,
        }
        trainer.train(model=model, training_params=train_params, train_loader=train_loader, valid_loader=val_loader)


if __name__ == "__main__":
    unittest.main()