Biography

I am currently a senior software engineer at NVIDIA. My R&D focuses on redefining the next generation network infrastructure (RDMA, Infiniband, etc.) to support the largest AI supercomputers/clusters globally. I received my Ph.D. in 2024 at Duke University, advised by Prof. Danyang Zhuo. Before Duke, I received my Bachelor degree from Peking University. This website is no longer frequently maintained.

Research

I am broadly interested in building high performance computing infrastructure, with a special focus on datacenter network, Remote Direct Memory Access (RDMA) and InfiniBand (IB) technology, and hyperscale AI networks.

Selected Publications

Hardware-assisted RDMA Performance Isolation for Public Clouds
Jiaqi Lou*, Xinhao Kong*, Jinghan Huang, Wei Bai, Nam Sung Kim, Danyang Zhuo (*equal contributions)
NSDI 2024
[pdf] [slides] [video]

Towards a Manageable Intra-Host Network
Xinhao Kong, Jiaqi Lou, Wei Bai, Nam Sung Kim, Danyang Zhuo.
HotOS 2023
[pdf]

Understanding RDMA Microarchitecture Resources for Performance Isolation
Xinhao Kong, Jingrong Chen, Wei Bai, Yechen Xu, Mahmoud Elhaddad, Shachar Raindel, Jitendra Padhye, Alvin R. Lebeck, Danyang Zhuo.
NSDI 2023
[pdf] [slides] [code] [video]

Collie: Finding Performance Anomalies in RDMA Subsystems
Xinhao Kong, Yibo Zhu, Huaping Zhou, Zhuo Jiang, Jianxi Ye, Chuanxiong Guo, Danyang Zhuo.
NSDI 2022
[pdf] [slides] [code] [video]

Invited Talks

Towards Reliable and Predictable RDMA Networks
- NVIDIA Networking Software Architecture Group, March 2024

Towards a Manageable Intra-Host Network
- HotOS 2023, June 2023

Understanding RDMA Microarchitecture Resources for Performance Isolation
- USENIX NSDI 2023, April 2023
- Microsoft Research and Microsoft Azure, August 2022

Collie: Finding Performance Anomalies in RDMA Subsystems
- Harvard Cloud & Network System Group, May 2022
- USENIX NSDI 2022, April 2022
- Student Lightning Talk @Google Networking Research Summit 2022, March 2022
- Microsoft Research and Microsoft Azure, September 2021
- Bytedance System & Networking Group, May 2021

Awards / Honors

Duke CS Best Preliminary Examination Award, 2024
USENIX NSDI Student Grant, 2024
Duke Outstanding Research in Progress Award, 2023
Duke Outstanding Teaching Assistant Award, 2023
USENIX NSDI Student Grant, 2023
Duke Computer Science PhD Fellowship, 2022-2023
USENIX NSDI Student Grant, 2022
Duke Computer Science PhD Fellowship, 2021-2022
Peking University Outstanding Graduate Award, 2020