collaborators

7 papers

cs.ET2025

When to Reason: Semantic Router for vLLM

Chen Wang, Xunzhuo Liu, Yuhan Liu +4

Large Language Models (LLMs) demonstrate substantial accuracy gains when augmented with reasoning modes such as chain-of-thought and inference-time scaling. However, reasoning also…

cs.AI2025

TurboSpec: Closed-loop Speculation Control System for Optimizing LLM Serving Goodput

Xiaoxuan Liu, Jongseok Park, Langxiang Hu +10

Large Language Model (LLM) serving systems batch concurrent user requests to achieve efficient serving. However, in real-world deployments, such inter-request parallelism from batc…

cs.LG2025

Optimizing LLM Queries in Relational Data Analytics Workloads

Shu Liu, Asim Biswal, Amog Kamsetty +8

Batch data analytics is a growing application for Large Language Models (LLMs). LLMs enable users to perform a wide range of natural language tasks, such as classification, entity…

cs.DC2025

Jenga: Effective Memory Management for Serving LLM with Heterogeneity

Chen Zhang, Kuntai Du, Shu Liu +10

Large language models (LLMs) are widely used but expensive to run, especially as inference workloads grow. To lower costs, maximizing the request batch size by managing GPU memory…

cs.DC2025

SkyStore: Cost-Optimized Object Storage Across Regions and Clouds

Shu Liu, Xiangxi Mo, Moshik Hershcovitch +11

Modern applications span multiple clouds to reduce costs, avoid vendor lock-in, and leverage low-availability resources in another cloud. However, standard object stores operate wi…

cs.AI2025

LLMs Can Easily Learn to Reason from Demonstrations Structure, not content, is what matters!

Dacheng Li, Shiyi Cao, Tyler Griggs +9

Large reasoning models (LRMs) tackle complex reasoning problems by following long chain-of-thoughts (Long CoT) that incorporate reflection, backtracking, and self-validation. Howev…