vLLM V1 Implementation #4: Scheduler
Published:Dec 25, 2025 03:00
•1 min read
•Zenn LLM
Analysis
This article delves into the scheduler component of vLLM V1, highlighting its key architectural feature: a "phaseless design" that eliminates the traditional "Prefill Phase" and "Decode Phase." This approach likely streamlines the inference process and potentially improves efficiency. The article promises a detailed explanation of the scheduler's role in inference control. Understanding the scheduler is crucial for optimizing and customizing vLLM's performance. The focus on a phaseless design suggests a move towards more dynamic and adaptive scheduling strategies within the LLM inference pipeline. Further investigation into the specific mechanisms of this phaseless approach would be beneficial.
Key Takeaways
Reference
“vLLM V1's most significant feature in the Scheduler is its "phaseless design" that eliminates the traditional concepts of "Prefill Phase" and "Decode Phase."”