LLM Compression and Acceleration Techniques
Chapter 1: Foundations of LLM Efficiency Challenges
Scaling Laws and Computational Costs of LLMs
Memory Bandwidth and Compute Bottlenecks in LLM Inference
Architectural Considerations for Efficiency
Metrics for Evaluating LLM Compression and Latency
Hardware for LLM Deployment
Theoretical Limits of Compression and Acceleration
Chapter 2: Advanced Quantization Techniques
Quantization Fundamentals Revisited
Post-Training Quantization (PTQ)
Quantization-Aware Training (QAT)
Extreme Quantization
Mixed-Precision Quantization Strategies
Hardware Acceleration for Quantized Operations
Evaluating Fidelity and Performance of Quantized LLMs
Hands-on Practical: Implementing PTQ and QAT
Chapter 3: Sophisticated Pruning Methodologies
Unstructured vs. Structured Pruning
Magnitude-Based Pruning
Movement Pruning and Dynamic Sparsity
Structured Pruning Techniques
Integrating Pruning with Quantization
Compiler and Runtime Support for Sparse Operations
Analyzing the Effects of Pruning on LLM Capabilities
Practice: Applying Structured Pruning
Chapter 4: Knowledge Distillation for Large Models
Principles of Knowledge Distillation
Distillation Objectives
Self-Distillation and Data Augmentation Strategies
Task-Specific vs. Task-Agnostic Distillation
Distilling Large Models into Smaller Models
Challenges in Distilling Generative Models
Evaluating Distilled Model Performance
Hands-on Practical: Distilling a Generative LLM
Chapter 5: Parameter-Efficient Fine-Tuning (PEFT) and Adaptation
Motivation for PEFT
Adapter Modules
Prefix Tuning, Prompt Tuning, and P-Tuning
Low-Rank Adaptation (LoRA)
Quantized LoRA (QLoRA)
Combining PEFT Methods
Performance Analysis of PEFT Techniques
Practice: Fine-tuning with LoRA and QLoRA
Chapter 6: Hardware Acceleration and Systems Optimization
Mapping LLM Operations to Hardware Architectures
Memory Management Techniques for Large Models
Optimized Kernels for LLM Layers
Compiler Optimizations for LLMs
Distributed Inference Strategies
Advanced Inference Optimization Algorithms
Benchmarking LLM Performance on Diverse Hardware
Hands-on Practical: Optimizing Inference with Runtimes
Chapter 7: Integrated Optimization Strategies and Advanced Topics
Combining Multiple Optimization Techniques
Neural Architecture Search (NAS) for Efficient LLMs
Conditional Computation and Mixture-of-Experts (MoE)
Continual Learning with Optimized Models
Measuring Impact on Fairness and Robustness
Research Frontiers in LLM Efficiency
Practice: Designing an End-to-End Optimized Pipeline
Quantized LoRA (QLoRA)
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- QLoRA: Efficient Finetuning of Quantized LLMs, Tim Dettmers, Artidoro Pagnoni, Ari Holtzman, Luke Zettlemoyer, 2023 arXiv preprint arXiv:2305.14314 DOI: 10.48550/arXiv.2305.14314 - This paper introduces QLoRA, detailing 4-bit NormalFloat (NF4) quantization, Double Quantization (DQ), and Paged Optimizers. It provides the technical basis for the section.
- bitsandbytes: 8-bit Optimizers and Quantization Techniques for PyTorch, Tim Dettmers, 2023 - The GitHub repository for the bitsandbytes library, which implements the optimized CUDA kernels for 4-bit NormalFloat and other quantization techniques essential for QLoRA.
- Parameter-Efficient Fine-Tuning (PEFT) library, Hugging Face, 2024 (Hugging Face) - Official documentation for the Hugging Face PEFT library, which offers high-level APIs for applying LoRA, QLoRA, and other parameter-efficient fine-tuning methods.