SpecEdge: Scalable Edge-Assisted Serving Framework for Interactive LLMs
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arXiv
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866908661076459520 |
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| author | Park, Jinwoo Cho, Seunggeun Han, Dongsu |
| author_facet | Park, Jinwoo Cho, Seunggeun Han, Dongsu |
| contents | Large language models (LLMs) power many modern applications, but serving them at scale remains costly and resource-intensive. Current server-centric systems overlook consumer-grade GPUs at the edge. We introduce SpecEdge, an edge-assisted inference framework that splits LLM workloads between edge and server GPUs using a speculative decoding scheme, exchanging only token outputs over the network. SpecEdge employs proactive edge drafting to overlap edge token creation with server verification and pipeline-aware scheduling that interleaves multiple user requests to increase server-side throughput. Experiments show SpecEdge enhances overall cost efficiency by 1.91x through achieving 2.22x server throughput, and reduces inter token latency by 11.24% compared to a server-only baseline, introducing a scalable, cost-effective paradigm for LLM serving. The code is available at https://github.com/kaist-ina/specedge |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_17052 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | SpecEdge: Scalable Edge-Assisted Serving Framework for Interactive LLMs Park, Jinwoo Cho, Seunggeun Han, Dongsu Computation and Language Artificial Intelligence Large language models (LLMs) power many modern applications, but serving them at scale remains costly and resource-intensive. Current server-centric systems overlook consumer-grade GPUs at the edge. We introduce SpecEdge, an edge-assisted inference framework that splits LLM workloads between edge and server GPUs using a speculative decoding scheme, exchanging only token outputs over the network. SpecEdge employs proactive edge drafting to overlap edge token creation with server verification and pipeline-aware scheduling that interleaves multiple user requests to increase server-side throughput. Experiments show SpecEdge enhances overall cost efficiency by 1.91x through achieving 2.22x server throughput, and reduces inter token latency by 11.24% compared to a server-only baseline, introducing a scalable, cost-effective paradigm for LLM serving. The code is available at https://github.com/kaist-ina/specedge |
| title | SpecEdge: Scalable Edge-Assisted Serving Framework for Interactive LLMs |
| topic | Computation and Language Artificial Intelligence |
| url | https://arxiv.org/abs/2505.17052 |