Hardware-Aware Nas

Hardware-Aware NAS is a neural architecture search approach that explicitly considers target hardware constraints — incorporating latency, energy consumption, memory usage, and FLOPs directly into the search objective to find architectures that are Pareto-optimal for accuracy vs. efficiency.

How Does Hardware-Aware NAS Work?

• Objective: $min_\alpha \mathcal{L}_{CE}(\alpha)$ subject to $Latency(\alpha) \leq T_{target}$
• Latency Estimation: Lookup tables (real hardware profiling), analytical models, or differentiable predictors.
• Hardware Targets: GPU (NVIDIA), mobile CPU (ARM Cortex), NPU (Qualcomm), edge TPU (Google).
• Examples: MNASNet, EfficientNet, ProxylessNAS, OFA.

Why It Matters

• FLOPs ≠ Latency: Two architectures with the same FLOPs can have very different real-world latency (memory access patterns, parallelism).
• Deployment-Ready: Produces architectures ready for deployment on specific hardware — no further optimization needed.
• Industry Standard: All major mobile/edge AI deployments use hardware-aware NAS architectures.

Hardware-Aware NAS is co-designing algorithms with silicon — finding the neural network architecture that best exploits the specific capabilities of the target chip.