Recap: Scalable AI Models with PyTorch Lightning

Scalable AI Models with PyTorch Lightning

Sergiy Tkachuk

Director, GenAI Productivity

Building scalable models with PyTorch Lightning

Neural network structuring
Effective training logic
LightningModule implementation

import lightning.pytorch as pl
import torch.nn as nn

class ClassificationModel(pl.LightningModule):
    def __init__(self, input_dim,
                 hidden_dim, num_class):
          # Initialize parent class
        super().__init__()
        # First layer
        self.layer1 = nn.Linear(input_dim,
                                hidden_dim)
        # Activation function
        self.relu = nn.ReLU()
        # Output layer
        self.layer2 = nn.Linear(hidden_dim,
                                num_class)

Advanced techniques in PyTorch Lightning

Data management and preprocessing
Validation and testing methods
Lightning callbacks optimization

from lightning.pytorch import Trainer
from lightning.pytorch.callbacks import EarlyStopping, ModelCheckpoint

checkpoint = ModelCheckpoint(
    monitor='val_accuracy',
    save_top_k=2,
    mode='max')
early_stopping = EarlyStopping(
    monitor='val_accuracy',
    patience=5,
    mode='max')

Optimizing models for scalability

Model quantization strategies
Model pruning for efficiency
TorchScript for deployment

import torch
import torch.nn as nn

class SimpleModel(nn.Module):
    def forward(self, x):
        return x * 2

scripted_model = torch.jit.script(SimpleModel())

torch.jit.save(scripted_mod,"model.pt") # Save the model
loaded_model=torch.jit.load("model.pt") # Load the model

Congratulations!

Scalable AI Models with PyTorch Lightning