AGENTIC-SYSTEMSMarch 20, 20261 min read13 views

MineDraft: A Framework for Batch Parallel Speculative Decoding

MineDraft is a novel framework that introduces Parallel Speculative Decoding (PSD) to accelerate LLM inference by overlapping drafting and verification stages. Experimental results demonstrate up to a 75% increase in throughput and a 39% reduction in latency compared to standard speculative decoding.

Computer Science > Computation and Language

Title:MineDraft: A Framework for Batch Parallel Speculative Decoding

View PDF HTML (experimental)Abstract:Speculative decoding (SD) accelerates large language model inference by using a smaller draft model to propose draft tokens that are subsequently verified by a larger target model. However, the performance of standard SD is often limited by the strictly sequential execution of these drafting and verification stages. To address this, this paper proposes MineDraft, a batch parallel speculative decoding (PSD) framework designed to effectively hide drafting latency by overlapping it with verification. Our theoretical analysis shows that PSD is substantially more efficient than standard SD. MineDraft realizes the PSD through a novel batch-parallel design that maintains two batches of requests, overlapping drafting for one batch with verification for the other. Our experimental results show significant improvements of MineDraft in both throughput (up to 75%) and end-to-end latency (up to 39%) over standard SD. Furthermore, we have implemented MineDraft as a plugin for vLLM, demonstrating its practicality for production-ready inference systems.

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Source: arXiv cs.AI Recent

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