I am a Ph.D. student at the Computer Systems Laboratory, Cornell University, supervised by Prof. Zhiru Zhang. I received my B.E. degree from the School of Computer Science and Engineering, Sun Yat-sen University in 2021.

My research interests broadly lie in domain-specific languages and compilers, efficient runtime systems, and accelerator architecture. In particular, I attempt to bridge the productivity and performance gap between emerging parallel applications and heterogeneous hardware (CPU/GPU/FPGA).

Currently, I am working on compiler optimization for hardware accelerators. We are designing a new MLIR dialect for HeteroCL, a next-generation software-defined reconfigurable computing platform.


Cornell University, US
Ph.D. in Computer Science
Accumulated GPA: 4.0/4.0
Aug. 2021 - Present
Sun Yat-sen University, China
B.E. in Computer Science
Aug. 2017 - Jun. 2021
Thesis: High-Performance Concurrent Graph Processing System
(Outstanding Undergraduate Thesis)
Overall GPA: 3.95/4.00 (Major GPA: 3.99/4.00)
Ranking: 1/188

Work Experience

Amazon Web Services (AWS) , Santa Clara, CA, US
Incoming Applied Scientist Intern
Aug. 2022 - Dec. 2022
ByteDance AI Lab , Beijing, China
Research Intern, MLSys Group (AML)
Mentor: Dr. Jun He and Dr. Yibo Zhu
Aug. 2020 - May. 2021


Accelerator Design with Decoupled Hardware Customizations: Benefits and Challenges
Debjit Pal, Yi-Hsiang Lai, Shaojie Xiang, Niansong Zhang, Hongzheng Chen, Jeremy Casas, Pasquale Cocchini, Zhenkun Yang, Jin Yang, Louis-Noël Pouchet, Zhiru Zhang
To appear in DAC, 2022 (Invited Paper)

HeteroFlow: An Accelerator Programming Model with Decoupled Data Placement for Software-Defined FPGAs
Shaojie Xiang, Yi-Hsiang Lai, Yuan Zhou, Hongzheng Chen, Niansong Zhang, Debjit Pal, Zhiru Zhang
FPGA, 2022

Krill: A Compiler and Runtime System for Concurrent Graph Processing
Hongzheng Chen, Minghua Shen, Nong Xiao, Yutong Lu
SC, 2021

FracBNN: Accurate and FPGA-Efficient Binary Neural Networks with Fractional Activations
Yichi Zhang, Junhao Pan, Xinheng Liu, Hongzheng Chen, Deming Chen, Zhiru Zhang
FPGA, 2021 (Best Paper Nominee)

Entropy-Directed Scheduling for FPGA High-Level Synthesis
Minghua Shen, Hongzheng Chen (Corresponding author), Nong Xiao
IEEE Transactions on CAD, 2020

A Deep-Reinforcement-Learning-Based Scheduler for FPGA HLS
Hongzheng Chen, Minghua Shen
ICCAD, 2019


Structured Pruning is All You Need for Pruning CNNs at Initialization
Yaohui Cai, Weizhe Hua, Hongzheng Chen, G. Edward Suh, Christopher De Sa, Zhiru Zhang
Under Review, arXiv, 2022

BGL: GPU-Efficient GNN Training by Optimizing Graph Data I/O and Preprocessing
Tianfeng Liu, Yangrui Chen, Dan Li, Chuan Wu, Yibo Zhu, Jun He, Yanghua Peng, Hongzheng Chen, Hongzhi Chen, Chuanxiong Guo
Under Review, arXiv, 2021


Professional Service

Awards & Honors

  • SenseTime Scholarship (21 undergrads in China), SenseTime, 2020
  • CCF Elite Collegiate Award (98 undergrads in China), China Computer Federation (CCF), 2020
  • Chinese National Scholarship $\times$ 2 (Top 1%), Ministry of Education of PRC, 2018-2020
  • First-Prize Scholarship $\times$ 3 (Top 5%), Sun Yat-sen University, 2017-2020
  • Samsung Scholarship (Top 1%), Samsung Electronics, 2017-2018


  • Programming: C, C++, Python, Haskell, OCaml, Prolog, x86 assembly, Verilog
  • Toolkits: LLVM, TVM, OpenMP, CUDA, MPI, Pytorch, Wolfram Mathematica, Matlab, Vivado HLS, \(\LaTeX\)