Single-Path NAS: Designing Hardware-Efficient ConvNets in less than 4 Hours
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Abstract (arXiv)
Can we automatically design a Convolutional Network (ConvNet) with the highest image classification accuracy under the runtime constraint of a mobile device? Neural architecture search (NAS) has revolutionized the design of hardware-efficient ConvNets by automating this process. However, the NAS problem remains challenging due to the combinatorially large design space, causing a significant searching time (at least 200 GPU-hours). To alleviate this complexity, we propose Single-Path NAS, a novel differentiable NAS method for designing hardware-efficient ConvNets in less than 4 hours. Our contributions are as follows: 1. Single-path search space: Compared to previous differentiable NAS methods, Single-Path NAS uses one single-path over-parameterized ConvNet to encode all architectural decisions with shared convolutional kernel parameters, hence drastically decreasing the number of trainable parameters and the search cost down to few epochs. 2. Hardware-efficient ImageNet classification: Single-Path NAS achieves 74.96% top-1 accuracy on ImageNet with 79ms latency on a Pixel 1 phone, which is state-of-the-art accuracy compared to NAS methods with similar constraints (<80ms). 3. NAS efficiency: Single-Path NAS search cost is only 8 epochs (30 TPU-hours), which is up to 5,000x faster compared to prior work. 4. Reproducibility: Unlike all recent mobile-efficient NAS methods which only release pretrained models, we open-source our entire codebase at: https://github.com/dstamoulis/single-path-nas.
Key facts. Cited by 87 papers in the map (data through 7 Oct 2026). First posted on arXiv 5 Apr 2019.
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Citing papers per year: 2021: 36; 2022: 20; 2023: 12; 2024: 11; 2025: 8.
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- 2021Sustainable AI: Environmental Implications, Challenges and Opportunitiescited by 242
- 2021HW-NAS-Bench:Hardware-Aware Neural Architecture Search Benchmarkcited by 83
- 2021A Comprehensive Survey on Hardware-Aware Neural Architecture Searchcited by 60
- 2023ZiCo: Zero-shot NAS via Inverse Coefficient of Variation on Gradientscited by 57
- 2024Flextron: Many-in-One Flexible Large Language Modelcited by 42
- 2021HR-NAS: Searching Efficient High-Resolution Neural Architectures with Lightweight Transformerscited by 39
- 2021Inspect, Understand, Overcome: A Survey of Practical Methods for AI Safetycited by 35
- 2022Machine Learning for Microcontroller-Class Hardware: A Reviewcited by 28
- 2021CompOFA: Compound Once-For-All Networks for Faster Multi-Platform Deploymentcited by 26
- 2021Pruning Self-attentions into Convolutional Layers in Single Pathcited by 24
- 2023Zero-Shot Neural Architecture Search: Challenges, Solutions, and Opportunitiescited by 21
- 2021HardCoRe-NAS: Hard Constrained diffeRentiable Neural Architecture Searchcited by 20
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- 2025L-SWAG: Layer-Sample Wise Activation with Gradients information for Zero-Shot NAS on Vision Transformers12 May 2025
- 2025Efficient Quantum Convolutional Neural Networks for Image Classification: Overcoming Hardware Constraints9 May 2025
- 2025FX-DARTS: Designing Topology-unconstrained Architectures with Differentiable Architecture Search and Entropy-based Super-network Shrinking25 Apr 2025
- 2025Neural Architecture Search by Learning a Hierarchical Search Space27 Mar 2025
- 2025Ecomap: Sustainability-Driven Optimization of Multi-Tenant DNN Execution on Edge Servers6 Mar 2025
- 2024GradAlign for Training-free Model Performance Inference29 Nov 2024
- 2024ELSA: Exploiting Layer-wise N:M Sparsity for Vision Transformer Acceleration15 Sep 2024
- 2024SCAN-Edge: Finding MobileNet-speed Hybrid Networks for Diverse Edge Devices via Hardware-Aware Evolutionary Search27 Aug 2024
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