activity
20242026
most citedWhy Do Multi-Agent LLM Systems Fail?

15 citations · 27 across the 31 of their papers we have counts for

collaborators

33 papers

cs.DC2026

Koi: Evidence-Guided, Self-Calibrating Planning for Multi-Cloud, Heterogeneous LLM Inference Fleets

Mankeerat Sidhu, Gangmuk Lim, Hetarth Chopra +10

Deploying a large language model (LLM) requires choosing the right accelerator, parallelization strategy, engine configuration, and replica count amongst ~140 other variables acros…

cs.DC2026

FreeToken: Efficient Edge-Native MoE Serving with Bandwidth-Adaptive Execution

Shuo Yang, Xiaoze Fan, Melissa Pan +8

Frontier open-weight models are increasingly available, but serving them still largely assumes datacenter infrastructure. We present FreeToken, an edge-native MoE serving system th…

cs.AI2026

Inference Time Context Sparsity: Illusion or Opportunity?

Sahil Joshi, Prithvi Dixit, Agniva Chowdhury +5

Sparsity has long been a central theme in LLM efficiency, but its role in context processing remains unresolved. As LLM workloads shift toward longer contexts and agentic interacti…

cs.DB2026

The Time is Here for Just-in-Time Systems: Challenges and Opportunities

Shu Liu, Alexander Krentsel, Shubham Agarwal +8

Core systems like key-value stores have historically taken years to build, and are designed to be general so as to amortize cost across deployments, paying a significant performanc…

cs.LG2026

SageBwd: A Trainable Low-bit Attention

Jintao Zhang, Marco Chen, Haoxu Wang +5

Low-bit attention, such as SageAttention, has emerged as an effective approach for accelerating model inference, but its applicability to training remains poorly understood. In pri…

cs.LG2026

SLA2: Sparse-Linear Attention with Learnable Routing and Quantization-aware Training

Jintao Zhang, Haoxu Wang, Kai Jiang +6

Sparse-Linear Attention (SLA) combines sparse and linear attention to accelerate diffusion models and has shown strong performance in video generation. However, (i) SLA relies on a…

cs.LG2026

Quant VideoGen: Auto-Regressive Long Video Generation via 2-Bit KV-Cache Quantization

Haocheng Xi, Shuo Yang, Yilong Zhao +13

Despite rapid progress in autoregressive video diffusion, an emerging system algorithm bottleneck limits both deployability and generation capability: KV cache memory. In autoregre…

cs.SE2025

Let the Barbarians In: How AI Can Accelerate Systems Performance Research

Audrey Cheng, Shu Liu, Melissa Pan +18

Artificial Intelligence (AI) is beginning to transform the research process by automating the discovery of new solutions. This shift depends on the availability of reliable verifie…

cs.CV2025

TurboDiffusion: Accelerating Video Diffusion Models by 100-200 Times

Jintao Zhang, Kaiwen Zheng, Kai Jiang +5

We introduce TurboDiffusion, a video generation acceleration framework that can speed up end-to-end diffusion generation by 100-200x while maintaining video quality. TurboDiffusion…

cs.LG2025

FrontierCS: Evolving Challenges for Evolving Intelligence

Qiuyang Mang, Wenhao Chai, Zhifei Li +48

We introduce FrontierCS, a benchmark of 156 open-ended problems across diverse areas of computer science, designed and reviewed by experts, including CS PhDs and top-tier competiti…

cs.AI2025

SkyRL-Agent: Efficient RL Training for Multi-turn LLM Agent

Shiyi Cao, Dacheng Li, Fangzhou Zhao +12

We introduce SkyRL-Agent, a framework for efficient, multi-turn, long-horizon agent training and evaluation. It provides efficient asynchronous dispatching, lightweight tool integr…

cs.AI2025★ 1 cited

Barbarians at the Gate: How AI is Upending Systems Research

Audrey Cheng, Shu Liu, Melissa Pan +14

Artificial Intelligence (AI) is starting to transform the research process as we know it by automating the discovery of new solutions. Given a task, the typical AI-driven approach…

cs.DC2025

RLBoost: Harvesting Preemptible Resources for Cost-Efficient Reinforcement Learning on LLMs

Yongji Wu, Xueshen Liu, Haizhong Zheng +5

Reinforcement learning (RL) has become essential for unlocking advanced reasoning capabilities in large language models (LLMs). RL workflows involve interleaving rollout and traini…

cs.LG2025

vAttention: Verified Sparse Attention

Aditya Desai, Kumar Krishna Agrawal, Shuo Yang +5

State-of-the-art sparse attention methods for reducing decoding latency fall into two main categories: approximate top- (and its extension, top-) and recently introduced samp…

cs.LG2025

SLA: Beyond Sparsity in Diffusion Transformers via Fine-Tunable Sparse-Linear Attention

Jintao Zhang, Haoxu Wang, Kai Jiang +10

In Diffusion Transformer (DiT) models, particularly for video generation, attention latency is a major bottleneck due to the long sequence length and the quadratic complexity. We f…

cs.AI2025★ 2 cited

Supporting Our AI Overlords: Redesigning Data Systems to be Agent-First

Shu Liu, Soujanya Ponnapalli, Shreya Shankar +12

Large Language Model (LLM) agents, acting on their users' behalf to manipulate and analyze data, are likely to become the dominant workload for data systems in the future. When wor…

cs.DB2025

LEANN: A Low-Storage Vector Index

Yichuan Wang, Zhifei Li, Shu Liu +10

Embedding-based vector search underpins many important applications, such as recommendation and retrieval-augmented generation (RAG). It relies on vector indices to enable efficien…

cs.CV2025

Sparse VideoGen2: Accelerate Video Generation with Sparse Attention via Semantic-Aware Permutation

Shuo Yang, Haocheng Xi, Yilong Zhao +10

Diffusion Transformers (DiTs) are essential for video generation but suffer from significant latency due to the quadratic complexity of attention. By computing only critical tokens…

cs.DC2025

Prism: Cost-Efficient Multi-LLM Serving via GPU Memory Ballooning

Shan Yu, Yifan Qiao, Mingyuan Ma +18

Inference providers must maintain availability for many LLMs, including low-volume but essential models, making resource efficiency increasingly important as token prices fall. Ana…

cs.DC2025★ 2 cited

HeterMoE: Efficient Training of Mixture-of-Experts Models on Heterogeneous GPUs

Yongji Wu, Xueshen Liu, Shuowei Jin +6

The Mixture-of-Experts (MoE) architecture has become increasingly popular as a method to scale up large language models (LLMs). To save costs, heterogeneity-aware training solution…

cs.RO2025

TURBO: Utility-Aware Bandwidth Allocation for Cloud-Augmented Autonomous Control

Peter Schafhalter, Alexander Krentsel, Hongbo Wei +4

Autonomous driving system progress has been driven by improvements in machine learning models, whose computational demands now exceed what edge devices alone can provide. The cloud…

cs.AI2025★ 15 cited

Why Do Multi-Agent LLM Systems Fail?

Mert Cemri, Melissa Z. Pan, Shuyi Yang +10

Despite enthusiasm for Multi-Agent LLM Systems (MAS), their performance gains on popular benchmarks are often minimal. This gap highlights a critical need for a principled understa…

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.CV2025★ 2 cited

WorldModelBench: Judging Video Generation Models As World Models

Dacheng Li, Yunhao Fang, Yukang Chen +10

Video generation models have rapidly progressed, positioning themselves as video world models capable of supporting decision-making applications like robotics and autonomous drivin…