Timothy Chou

1paper

1 Paper

18.8LGMar 20, 2025
Accelerating Transformer Inference and Training with 2:4 Activation Sparsity

Daniel Haziza, Timothy Chou, Dhruv Choudhary et al.

In this paper, we demonstrate how to leverage 2:4 sparsity, a popular hardware-accelerated GPU sparsity pattern, to activations to accelerate large language model training and inference. Crucially we exploit the intrinsic sparsity found in Squared-ReLU activations to provide this acceleration with no accuracy loss. Our approach achieves up to 1.3x faster Feed Forward Network (FFNs) in both the forwards and backwards pass. This work highlights the potential for sparsity to play a key role in accelerating large language model training and inference.