Haoran Zhang   张浩然

I am a fourth year Ph.D. student in the Department of Computer and Information Science at Penn, co-advised by Vincent Liu and Sebastian Angel. I also have had the fortune to work with Rajeev Alur and Shuai Mu. Before Penn, I obtained B.E. Degree in Computer Science from Tsinghua University.

My research interests include distributed systems, databases and networking, with a focus on serverless computing.

I’m allergic to cats, but the advent of CaaS (Cat-as-a-Service) has made cloud petting possible. 瓜皮(➔) is my favorite.

My Email is haorz at seas dot upenn dot edu. You can also find me on Github, Linkedin, Keybase, Mastodon.

Education

• 2019 - Present, Ph.D. in Computer Science University of Pennsylvania
• 2014 - 2019, B.E. in Computer Science Tsinghua University
• 2011 - 2014 Shanghai Qibao High School

Pulications

• XFaaS: Hyperscale and Low Cost Serverless Functions at Meta
  Alireza Sahraei , Soteris Demetriou , Amirali Sobhgol , Haoran Zhang , Abhigna Nagaraja , Neeraj Pathak , Girish Joshi , Carla Souza , Bo Huang , Wyatt Cook , Andrii Golovei , Pradeep Venkat , Andrew McFague , Dimitrios Skarlatos , Vipul Patel , Ravinder Thind , Ernesto Gonzalez , Yun Jin , and Chunqiang Tang
  ACM Symposium on Operating Systems Principles (SOSP 2023)
  
• Executing Microservice Applications on Serverless, Correctly
  Konstantinos Kallas* , Haoran Zhang* , Rajeev Alur , Sebastian Angel , and Vincent Liu
  ACM SIGPLAN Symposium on Principles of Programming Languages (POPL 2023)
  [PDF] [Code]
• Fault-tolerant and Transactional Stateful Serverless Workflows
  Haoran Zhang , Adney Cardoza , Peter Baile Chen , Sebastian Angel , and Vincent Liu
  Proceedings of the USENIX Symposium on Operating Systems Design and Implementation (OSDI 2020)
  [PDF] [Code] [Extended Report]
• Automatic diagnosis of macular diseases from OCT volume based on its two-dimensional feature map and convolutional neural network with attention mechanism
  Yankui Sun , Haoran Zhang , and Xianlin Yao
  Journal of Biomedical Optics (JBO 2020)
  [PDF]

Preprints

• OneFlow: Redesign the Distributed Deep Learning Framework from Scratch
  Jinhui Yuan , Xinqi Li , Cheng Cheng , Juncheng Liu , Ran Guo , Shenghang Cai , Chi Yao , Fei Yang , Xiaodong Yi , Chuan Wu , Haoran Zhang , and Jie Zhao
  [PDF] [Code]

Teaching Assistant

• CIS 455/555: Internet and Web Systems (Spring 2022)
  
• CIS 548: Operating Systems Design and Implementation (Spring 2021)
  

Services

• Artifact Evaluation Committee (AEC) (SOSP 2021)
  

Experiences

• Meta Bellevue, WA, USA
  SDE Intern May 2023 - Aug 2023
• Meta Bellevue, WA, USA
  SDE Intern May 2022 - Aug 2022
• ByteDance Seattle, WA, USA
  Research Intern May 2021 - Aug 2021
• ByteDance Beijing, China
  SDE Intern Mar 2019 - Jun 2019
• New York University New York, NY, USA
  Research Assistant Jun 2018 - Sep 2018
• Microsoft Research Asia (MSRA) Beijing, China
  Research Intern Oct 2016 - Dec 2016