Sparse-Llama-3.1-8B-2of4

Model Overview

• Model Architecture: Llama-3.1-8B
  • Input: Text
  • Output: Text
• Model Optimizations:
  • Sparsity: 2:4
• Release Date: 11/20/2024
• Version: 1.0
• License(s): llama3.1
• Model Developers: Neural Magic

This is the 2:4 sparse version of Llama-3.1-8B. On the OpenLLM benchmark (version 1), it achieves an average score of 62.16, compared to 63.19 for the dense model—demonstrating a 98.37% accuracy recovery. On the Mosaic Eval Gauntlet benchmark (version v0.3), it achieves an average score of 53.85, versus 55.34 for the dense model—representing a 97.3% accuracy recovery.

Model Optimizations

This model was obtained by pruning all linear operators within transformer blocks to the 2:4 sparsity pattern: in each group of four weights, two are retained while two are pruned. In addition to pruning, the sparse model was trained with knowledge distillation for 13B tokens to recover the accuracy loss incurred by pruning. For pruning, we utilize optimized version of SparseGPT through LLM-Compressor, and for sparse training with knowledge distillation we utilize SquareHead approach.

Deployment with vLLM

This model can be deployed efficiently using the vLLM backend. vLLM aslo supports OpenAI-compatible serving. See the documentation for more details.

Evaluation

This model was evaluated on the OpenLLM benchmark (version 1) with the vLLM engine for faster inference. In addition to the OpenLLM benchmark, the model was evaluated on the Mosaic Eval Gauntlet benchmark (version v0.3). The evaluation results are summarized below.

Accuracy

Open LLM Leaderboard evaluation scores

Benchmark	Llama-3.1-8B	Sparse-Llama-3.1-8B-2of4
ARC-C (25-shot)	58.2	59.4
MMLU (5-shot)	65.4	60.6
HellaSwag (10-shot)	82.3	79.8
WinoGrande (5-shot)	78.3	75.9
GSM8K (5-shot)	50.7	56.3
TruthfulQA (0-shot)	44.2	40.9
Average Score	63.19	62.16
Accuracy Recovery (%)	100	98.37

Mosaic Eval Gauntlet evaluation scores

Benchmark	Llama-3.1-8B	Sparse-Llama-3.1-8B-2of4
World Knowledge	59.4	55.6
Commonsense Reasoning	49.3	50.0
Language Understanding	69.8	69.0
Symbolic Problem Solving	40.0	37.1
Reading Comprehension	58.2	57.5
Average Score	55.34	53.85
Accuracy Recovery (%)	100	97.3