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Lightning-AI/litgpt

A high-performance, no-abstraction toolkit providing recipes for pretraining, finetuning, and deploying over 20 large language models at scale.

Core Features

Provides from-scratch implementations of 20+ high-performance LLMs.

Offers comprehensive recipes for pretraining, finetuning (LoRA, QLoRA, Adapter), and deploying LLMs.

Optimized for performance and memory efficiency using techniques like Flash Attention, FSDP, and mixed precision (fp4/8/16/32).

Designed for scalability, supporting training and inference across 1 to 1000+ GPUs/TPUs.

Developer-friendly with minimal abstractions, enabling full control and easy debugging.

Quick Start

pip install 'litgpt[extra]'

Detailed Introduction

LitGPT is an open-source toolkit from Lightning AI designed to empower developers with high-performance, enterprise-ready solutions for large language models. By providing over 20 LLM implementations built from scratch with minimal abstractions, it offers unparalleled control and ease of debugging. The project includes highly optimized recipes for pretraining, finetuning (supporting techniques like LoRA and QLoRA), and deploying LLMs at scale, leveraging advanced features like Flash Attention and FSDP for superior performance and memory efficiency across diverse hardware setups, from single GPUs to large clusters.