Email: keleher @ cs.umd.edu - PGP Key Position: Associate Professor, CS and UMIACS, Univ. of Maryland at College Park. Teaching: Distributed File Systems (818) Office: 4157 A.V. Williams Bldg. Phone: (301) 405-0345 Fax: (301) 405-6707 Address: Dept. of Computer Science, University of Maryland, College Park, MD 20742-3255 Other: Book Club

Research Interests

UbiOS | MoteFS | TerraDir    Deno | Harmony | CVM

My research is mostly in the field of distributed systems. Loosely defined, this encompasses work in operating systems, runtime systems, and distributed object and database systems. In all cases, our approach is to identify problems, propose solutions in the form of specific policies and mechanisms, and then empirically evaluate them. We are systems builders: very few projects end in analysis or simulation. The systems that we study often operate in fluid, dynamic environments. Simply put, my group tries to make systems operate better in such circumstances. Central to our approach is the notion of building systems that transparently adapt applications to changing conditions. Current work: The T.Rex project is based on the premise that data sharing platforms need to be dynamic, expressive, and user-centric. Further, we argue that such platforms need to include access control and the ability to enforce multiple consistency models, even in seemingly benign environments like the home. We are currently building a prototype of T.Rex that will run on linux boxes, macs, and iOS devices. The Spore system seeks to build reliable and secure data systems on untrusted substrates. We rely only on untrusted put/get functionality for immutable objects. Hence, this underlying substrate could be anything from a P2P system running on end user home machines to one of the commercial cloud providers. Older work: , , , , and .

PhD Students

Current:       Vassilios Lekakis       Yunus Basagalar       Sukhyun Song       Jaehwan Lee       Gary Jackson Graduated PhD's:       Jik-Soo Kim       Bujor Silaghi (Google)       Dr. Ugur Cetintemel (Brown University)       Dr. Kritchalach Thitikamol (Thammasat University)