Zhongrui Chen

Computer Science PhD Candidate at UNC Chapel Hill

Hi there. I am a fifth-year PhD candidate in Computer Science at UNC Chapel Hill, advised by Ben Berg.

I work at the intersection of Queueing Theory and Computer Systems. Namely,

  • Multiresource job scheduling: Scheduling jobs that request resources like (4 CPUs, 8GiBs, 2 GPUs, 10Gbps NIC). Hosts run many jobs in parallel subject to resource limits.
  • LLM inference job scheduling: Resource allocation for inference jobs to improve system throughput and lower latency.

Our trilogy on throughput-optimal data center scheduling is as follows:

  • Markovian Service Rate (MSR) Policies: [SIGMETRICS ‘25], [MAMA ‘24]
    A novel multiresource scheduling policy with response time analysis that supports multiple preemption models.
  • Quickswap: [Performance ‘25]
    A novel non-preemptive multiserver scheduling policy that performs well in theory and practice.
  • Scaling Cycles: [MAMA ‘26]
    A novel non-preemptive multiresource scheduling policy that performs optimally in some settings.

Publications

MAMA 2026

Non-preemptive Datacenter Scheduling via Scaling Cycles

Zhongrui Chen, Heyuan Yao, Izzy Grosof, Benjamin Berg
ACM Performance Evaluation Review 2026
Performance 2025

Improving Nonpreemptive Multiserver Job Scheduling with Quickswap

Zhongrui Chen, Adityo Anggraito, Diletta Olliaro, Andrea Marin, Marco Ajmone Marsan, Benjamin Berg, Isaac Grosof
PEVA Volume 171 / IFIP Performance 2025
SIGMETRICS 2025

Improving Multiresource Job Scheduling with Markovian Service Rate Policies

Zhongrui Chen, Isaac Grosof, Benjamin Berg
POMACS 2025 / SIGMETRICS 2025
MAMA 2024

Simple Policies for Multiresource Job Scheduling

Zhongrui Chen, Isaac Grosof, Benjamin Berg
ACM Performance Evaluation Review 2024

Talks

Non-preemptive Datacenter Scheduling via Scaling Cycles

2026
MAMA 2026 Ann Arbor, MI

Improving Nonpreemptive Multiserver Job Scheduling with Quickswap

2025
IFIP PERFORMANCE 2025 Amsterdam, NL

Improving Multiresource Job Scheduling with Markovian Service Rate Policies

2025
ACM SIGMETRICS 2025 Stony Brook, NY
Watch

A New Class of Policies for Multiresource Job Scheduling

2025
INFORMS APS 2025 Atlanta, GA [Slides]
Northwestern University Evanston, IL [Slides]

Simple Policies for Multiresource Job Scheduling

2024
INFORMS 2024 Seattle, WA [Slides]
MAMA Venice, Italy [Slides]