ChengXiang Qi(齐呈祥)

I am a first-year Master student in Institute of Computer Technology, Chinese Academy of Sciences. I am currently advised by Prof. Boyu Diao. My research interests lies in the AI compiler, OS and Virtualization.

Before coming to ICT, I completed my undergrader at Tianjin University.

Education

• Institute of Computer Technology, Chinese Academy of Sciences

  Master of Engineering in Computer Technology

  Sep. 2023 - Present

• Tianjin University

  Bachelor of Engineering in Computer Science and Technology

  Sep. 2019 - June. 2023

Experiences

R&D Intern in Tsinghua University(OS Laboratory)

May 2023 - July 2023

Mentors: Prof. Yu Chen, Dr. Yuekai Jia

• Performance Improvement. Performed network performance benchmarking with tools like Apache Http Server and iperf, and developed benchmarking tools to evaluate the network card's raw socket send and receive capabilities. Made modifications to the Network Protocol Stack and its interface with Arceos to enhance network bandwidth.
• NIC driver. Wrote a driver for the Intel 82599 network interface card with Rust programming language. Referred to DPDK for performance optimization and integrated it as a crate into Arceos. Run successfully real-world applications such as httpserver, iperf, and Redis on an AMD machines.
• Type-2 hypervisor based arceos. Developed a type-2 hypervisor based on Arceos which be capable of booting Linux.

Projects

rCore-OS/arceos: An experimental modular OS written in Rust.
Arceos is a unikernel developed by the rCore-OS community at Tsinghua University.

• I integrated hypercraft into arceos, enabling it to be launched as a type-2 hypervisor.
• I added interrupt support to arceos and implemented IO interrupts based on virtio-net and virtio-blk.
• I implemented ixgbe NIC driver for arceos and did performance optimizations in driver layer and network stack layer.

Star
xv6-rust: Reimplementation of xv6-riscv in the Rust language.

A Unix-like operating system implemented by pure rust. This project is a reimplementation of xv6-riscv. Besides, it do some optimizations to the origin system such as memory allocation and file system. This project also serves as the reference implementation for OSCOMP Project 4 You can find more information abot this project in documents.

Star
hypercraft: a VMM crate written in Rust.

Hypercraft is a VMM(Virtual Machine Monitor) crate written in Rust. Currently, hypercraft is integrated as a crate into rcore-os/arceos and can be launched as a type-2 hypervisor and be capable of booting Linux.

Star
hypocaust-2: A hardware-assisted virtualization RISC-V hypervisor using H extensions.

Hypocaust-2 implements SBI call processing, two-stage page table translation, interrupt emulation and forwarding and exception forwarding, passthrough or emulation of some peripherals. Currently hypocaust-2 can boot & run rCore-Tutorial-v3, rt-thread and mainline Linux, expecting to expande to multi-core & multi-guest.

Star
hypocaust: a S-mode trap and emulate type-1 hypervisor run on RISC-V machine.

Hypocaust implements privilege-level instruction emulation (CSR-related and SFECE VMA), construction of shadow page tables, synchronization of guest page tables and shadow page tables, forwarding of interrupts and exceptions, emulation of clocks and virtio block devices, and can currently run minikernel.

Star

Selected Awards

• 2022 NSCSCC Thrid Prize in Team Competition
• 2021 The Best Quality Prize of OSPP(only 5 in China a year)
• 2021 OSCOMP Thrid Prize in Team Competition

Talks

Hypocasut: a RISC-V type-1 hypervisor written in Rust.

• OS2ATC 2022, BeiJing, March 2023

More about me

Besides programming, I also have other interests:

• I like ancient Chinese history, especially the history of Wei, Jin and Ming. I have read Politics of Powerful Families in the Eastern Jin Dynasty(东晋门阀政治，田余庆著), History of Wei, Jin, Southern and Northern Dynasties(魏晋南北朝史，王仲荦著), Political Power and Family Network between Wei and Jin（魏晋之际的政治权力与家族网络，仇鹿鸣著）, Exploration of Tuoba History(拓跋史探，田余庆著) and History of Southern Ming Dynasty(南明史，顾城著).
• I also love reading literary books. I used to love martial arts novels, and I have read Jin Yong's complete works, most of Gu Long and Feng Ge's novels. In addition, I also read Latin American literature (García Márquez) and Japanese literature (Kawabata Yasunari, Murakami Haruki, Mishima Yukio, etc.).I am currently reading works by Yu Hua and Mo Yan, including Cries In The Drizzle（在细雨中呼喊）, To live(活着), Life and Death are Wearing Me Out（生死疲劳）.
• Besides, I also like to listen to music, my favorite music genres are R&B and Rock. And I am also actively practicing vocal technique. I like David Tao, JJ Lin, Shi Shi, Beyond, Bon Jovi, Mariah Carey, etc.
• In terms of sports, my favorite sport is playing basketball.