Sujay Yadalam

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sujayyadalam AT cs.wisc.edu

I am a fifth year computer science PhD student at the University of Wisconsin-Madison. I am a member of the SCAIL research group led by Prof. Michael Swift.

Prior to pursuing my graduate studies, I spent a year as a Research Assistant at the Indian Institute of Science (IISc) advised by Prof. Arkaprava Basu and Prof. Vinod Ganapathy.

I obtained my bachelor's degree in Electronics and Communication (ECE) from PES University.

News

May 2024: I will be teaching CS537 (Intro to OS) this summer!
May 2024: Awarded Lawrence H. Landweber NCR Fellowship for 2024-2025.
Apr 2023: Presented BypassD at ASPLOS '24, San Diego.
Aug 2023: Passed my PhD preliminary examination! Yay!
Jun 2023: Completed a successful internship at Microsoft!
Mar 2023: Aditya Kamath and I presented our idea on using LLMs in Operating Systems at WACI (Wild And Crazy Ideas) during ASPLOS 2023. Paper Code

Research interests

My research interests include computer architecture and systems broadly.
During my PhD, I have focused on designing architectures for new and upcoming memory and storage technologies such as Non-Volatile Memory, low-latency SSDs and CXL technology..
I have a keen interest in hardware-software co-designs. I believe that they present significant performance and efficiency opportunities that are unavailable without crossing the boundary between the two layers.

Selected Publications

How I learned to stop worrying and love learned OS policies
Divyanshu Saxena, Jiayi Chen, Sujay Yadalam, Yeonju Ro, Rohit Dwivedula, Eric Campbell, Aditya Akella, Christopher Rossbach, and Michael Swift
To appear in HotOS 2025
BypassD: Enabling fast userspace access to shared SSDs
Sujay Yadalam, Chloe Alverti, Vasileios Karakostas, Jayneel Gandhi, Michael Swift
ASPLOS 2024
[paper] [code]
ASAP: A Speculative Approach to Persistence
Sujay Yadalam, Nisarg Shah, Xiangyao Yu, Michael Swift
HPCA 2022
[paper] [code] [talk] [lightning talk]
SGXL: Security and Performance for Enclaves Using Large Pages
Sujay Yadalam, Vinod Ganapathy, Arkaprava Basu
TACO 2021
[paper] [code] [talk]

Other Publications

From Good to Great: Improving Memory Tiering Performance Through Parameter Tuning
Konstantinos Kanellis*, Sujay Yadalam*, Fanchao Chen, Shivaram Venkataraman, Michael Swift
*Equal contribution
[paper]
Herding LLaMaS: Using LLMs as an OS Module
Aditya K Kamath, Sujay Yadalam
[paper]

Awards and grants

Lawrence H. Landweber NCR fellowship (2024-25)
Distinguished Artifact award (BypassD @ ASPLOS'24)
ASPLOS'24 student travel grant
ASPLOS'22 student travel grant

Service

OSDI 2024 Artifact Evaluation Committee
ATC 2024 Artifact Evaluation Committee
Eurosys 2024 Shadow PC
HPCA 2024 Artifact Evaluation Committee

Teaching

Guest Lecture – CS739 - Distributed Systems (UW-Madison, Fall 2024)
Lecture title: Cluster Scheduling
Guest Lecture – CS537 - Introduction to Operating Systems (UW-Madison, Fall 2024)
Lecture title: Log structured Filesystems
Instructor – CS537 - Introduction to Operating Systems (UW-Madison, Summer 2024)
Guest Lecture – CS537 - Introduction to Operating Systems (UW-Madison, Spring 2024)
Lecture title: Concurrency bugs
Guest Lectures – CS537 - Introduction to Operating Systems (UW-Madison, Spring 2023)
Lecture titles: IO devices and disk schedulers, RAID
Guest Lecture – CS839 - Special Topics on persistence (UW-Madison, Fall 2021)
Lecture title: Architectures for NVM
Guest Lecture – CS642 - Introduction to Computer Security (UW-Madison, Fall 2019)
Lecture title: Hardware Security
Teaching Assistant – CS642 - Introduction to Computer Security (UW-Madison, Fall 2019)