I am an associate professor in the Department of Computer Science and Technology at Tsinghua University. I recieved my Ph.D degree from Tsinghua University in 2015, and Bachelor degree from Nanjing University in 2009. My research interest is in the area of computer systems and architecture, with an emphasis on memory, storage and file systems.

Research

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Machine Learning System (AI Data Infra)

• ElasticServe: Medusa (ASPLOS’25)
• Vector Store: PipeANN (OSDI’25)
• Recommendation Systems: Kraken (SC’20), Fleche (Eurosys’22), PetPS (VLDB’23), MAXEmb (ASPLOS’24)
• AI Training: Mobius (ASPLOS’23), Frugal (ASPLOS’25)

Distributed (File System) Storage

• File System Data: Octopus (ATC’17), Volley (EuroSys’24)
• File System Metadata: LocoFS (SC’17), InfiniFS (FAST’22), SingularFS (ATC’23)
• High-Performance File System:
  • SuperFS (#1 of 10-node metadata challenge of IO 500, SC’22)
  • SuperFS on Pengcheng Cloudbrain-II (#1 of overall challenge of IO500, ISC’23/SC’23/ISC’24/SC’24)

(Persistent) Memory System

• Local (Persistent) Memory System
  • Crash Consistency: LOC (ICCD’14), BPPM (MSST’15), SP3 (DAC’20)
  • File System: HiNFS (EuroSys’16), KucoFS (FAST’21)
  • Key-value Store: Pacman (ATC’22)
  • Data Structure: uTree (VLDB’20)
  • Security: ccNVM (DAC’19), Aria (ICDE’21)
• Distributed (Persistent) Memory System
  • File System: Octopus (ATC’17)
  • Key-value Store: FlatStore (ASPLOS’20)
  • Data Structure: Nap (OSDI’21), Sherman (SIGMOD’22)
  • Networking: ScaleRPC (EuroSys’19)
• In-Network Storage
  • Distributed Shared Memory: Concordia (FAST’21)
  • Transaction Processing: SwitchTx (VLDB’22), AlNiCo (ATC’22)
  • Network/Memory Co-Design: Citron (FAST’23), Patronus (FAST’23), ROWAN (OSDI’23)
• CXL Memory
  • Operating System Abstract: uProcess (SOSP’24)

Software Managed Flash System

• Software-Managed Flash
  • The Software-Managed Flash Architecture: OFSS (FAST’13)
  • File System: ReconFS (FAST’14), ParaFS (ATC’16)
  • Key-value Store: FlashKV (CODES+ISSS’17)
  • Distributed Object Storage: OCStore (ICDCS’19)
• Byte-addressable SSD:
  • File System: CoinPurse (DAC’20)
  • Key-value Store: SineKV (ICDCS’20)
  • Ordering and Crash Consistency: HORAE (OSDI’20), ccNVMe (SOSP’21)
• Others
  • Computational Storage: \lamda -IO (FAST’23)
  • Approximate Storage: ASCache (DAC’19),
  • Concurrency: MAX (ATC’21)

Service

• Program Chair
  • 2023: NCIS’23
  • 2020: ChinaSys’19
• Program Committee Member
  • 2026: ASPLOS’26
  • 2025: OSDI’25, USENIX ATC’25, EuroSys’25
  • 2024: FAST’24, USENIX ATC’24, SYSTOR’24, etc
  • 2023: FAST’23, USENIX ATC’23, SYSTOR’23, HotStorage’23, etc
  • 2022: USENIX ATC’22, EuroSys’22, SYSTOR’22, APSys’22, etc
  • 2021: HotStorage’21, MSST’21, SYSTOR’21, APSys’21, etc

Honors Awarded

• 2025: #1 in the ASPLOS / EuroSys 2025 LLM Inference Optimization Contest
• 2023 - now: #1 in the IO500 Research Overall Score (SuperFS), ISC'23/SC'23/ISC'24/SC'24
• 2023: ACM SIGMOD Research Highlight Award
• 2022: Top 10 Research Highlight (Distributed File System Metadata for Hunderds of Billions of Files), Tsinghua University
• 2022: #1 in the IO500 10-node Metadata Score(SuperFS), SC'22
• 2020: Excellent Young Scholar, National Natural Science Funds of China
• 2020: Technological Invention Award (First Prize), China Computer Federation
• 2020: The OlympusMons Awards (The highest honor for worldwide data infrastructure research by Huawei)
• 2019: ACM SIGOPS China Rising Star Award
• 2019: Technological Invention Award (First Prize), Ministry of Education of China (教育部技术发明一等奖, 第2完成人)
• 2017: Excellent Postdoctoral Research Award of Tsinghua University
• 2016: CCF Outstanding Doctoral Dissertation Award (中国计算机学会优秀博士学位论文奖)
• 2015: Young Elite Scientists Sponsorship Program by CAST (中国科协青年人才托举工程)
• 2015: MSST 2015 Best Paper Runner-Up
• 2014: IEEE NVMSA 2014 Best Paper Award