Occult to appear at NSDI '17!

SNOW and Janus appeared at OSDI '16!

Existential Consistency appeared at SOSP '15!

I joined the CS department at USC in the fall of 2014 as an Assistant Professor. I co-lead the Networked Systems Lab with Ramesh Govindan and Ethan Katz-Bassett.

I am interested in the theory, design, implementation, evaluation, and deployment of large-scale distributed systems. Keywords like big data, storage, consistency, geo-replication, consensus, concurrency control, and fault tolerance pique my interest.

One of my research directions looks at the tradeoffs between the power and performance properties of distributed systems. Power properties like consistency and transactional abilities make systems easier to reason about and program against. Performance properties like latency and throughput affect end user experience and the capital cost of systems. We're exploring what combinations of power and performance are and aren't possible. The SNOW Theorem and Janus is our most recent work in this area, which also includes Existential Consistency, Consistency Challenges, Rococo, Eiger, and COPS.

Another of my research directions looks at understanding and improving media processing, storage, and delivery at massive scale. RIPQ and extensions from deploying it in practice at Facebook described in this blog post are our most recent published work in this area, which also includes f4 and a study of the Facebook photo caching stack. Most of this work focused on photos, and we're currently exploring the new challenges posed by videos.

Wyatt Lloyd

Assistant Professor

University of Southern California


All of this research is made possible by my fantastic students:

Current Students


  • Yousif Aldolaijan
  • Matt Burke
  • Trevor Cai
  • Brian Goodchilde

Past Students


  • Mohsin Alie (2016) → Facebook
  • Abhinav Sharma (2016) → Facebook
  • Jamie Tsaoe (2016) → Google


  • Chris Hodsdon → USC PhD Program
  • Cary Jiang → Rice Undergrad

I am also privileged to work closely with other great students including Xing Xu (USC PhD 2017 → Google), Zahaib Aktar (USC PhD), Linpeng Tang (Princeton PhD), S. Akbar Mehdi (UT Austin PhD), and Shuai Mu (Tsinghua PhD 2015 → NYU PostDoc).