Qizhe Cai

Qizhe Cai 

Qizhe Cai (蔡其哲)
Graduate Student
Department of Computer Science
Cornell University

Email: qc228 [at] cornell [dot] edu

[CV] [Google Scholar] [Twitter] [Github]

About

I am a final year PhD student in the Department of Computer Science at Cornell University. I am advised by Rachit Agarwal. Before joing Cornell, I got my Master of Science degree in the Department of Computer Science at Princeton University,
advised by Jennifer Rexford. I got my Bachelor degree in Computer Science from department of EECS at University of Michigan.

My current research interest is designing and building network stacks/protocols/hardwares for Terabit Ethernet.

News

Publications

High-throughput and Flexible Host Networking via Control and Data Path Physical Separation [paper] [github]

Athinagoras Skiadopoulos, Zhiqiang Xie, Mark Zhao, Qizhe Cai, Saksham Agarwal, Jacob Adelmann, David Ahern,
Carlo Contavalli, Michael Goldflam, Vitaly Mayatskikh, Raghu Raja, Daniel Walton, Rachit Agarwal, Shrijeet Mukherjee, Christos Kozyrakis
In USENIX OSDI 2024

Harmony: A Congestion-free Datacenter Architecture [paper] [github]

Saksham Agarwal, Qizhe Cai, Rachit Agarwal, David Shmoys, Amin Vahdat
In USENIX NSDI 2024

Towards µs Tail Latency and Terabit Ethernet: Disaggregating the Host Network Stack [paper] [github]

Qizhe Cai, Midhul Vuppalapati, Jaehyun Hwang, Christos Kozyrakis, Rachit Agarwal
In ACM SIGCOMM 2022

dcPIM: Near-Optimal Proactive Datacenter Transport [paper] [github]

Qizhe Cai, Mina Tahmasbi Arashloo, Rachit Agarwal
In ACM SIGCOMM 2022

Understanding Host Network Stack Overheads [paper][github]

Qizhe Cai, Shubham Chaudhary, Midhul Vuppalapati, Jaehyun Hwang, Rachit Agarwal
In ACM SIGCOMM 2021

TCP ≅ RDMA: CPU-efficient Remote Storage Access with i10[paper] [github]

Jaehyun Hwang, Qizhe Cai, Ao Tang, Rachit Agarwal
In USENIX NSDI 2020

Network-Wide Heavy Hitter Detection For Real-Time Telemetry (Master's thesis)[paper]

Qizhe Cai, Princeton University, June 2018

Network-Wide Heavy Hitter Detection with Commodity Switches[paper]

Rob Harrison, Qizhe Cai, Arpit Gupta, Jennifer Rexford
In ACM SOSR 2018

Talks

Towards µs Tail Latency and Terabit Ethernet: Disaggregating the Host Network Stack

SIGCOMM (Amsterdam): Aug 2022 [video]

Alibaba Cloud (virtual): Jan 2023

dcPIM: Near-Optimal Proactive Datacenter Transport

NPI Retreat(New York): Oct 2019

Cornell System Lunch (Ithaca): Nov 2019

SIGCOMM (Amsterdam): Aug 2022 [video]

Understanding Host Network Stack Overheads

SIGCOMM (Virtual): Aug 2021 [video]

Teaching

Cornell University

Princeton University

Selected Awards