Sparsity-Aware Hardware: From Overheads to Performance Benefits
Man Shi, Adrian Kneip, Nicolas Chauvaux, Jiacong Sun, Charlotte Frenkel, Marian Verhelst · IEEE Solid-State Circuits Magazine · 2025
As artificial intelligence (AI) continues to transform multiple sectors, its exponential growth in computational demands presents significant challenges for hardware infrastructure. This article examines sparsity, the prevalence of zeros in AI workloads, as a promising approach to address these challenges. While sparsity offers potential efficiency gains, its practical implementation requires careful consideration of hardware constraints and computational overheads. Therefore, this article cooperates with a virtual performance roofline model to analyze various sparsity techniques and their associated tradeoffs, aiming to bridge the gap between theoretical potential and practical implementation in AI accelerator design.