I am generally interested in distributed systems. More specifically my work is focused on defining and refining the BAR model for distributed systems. Our initial efforts towards this end resultd in an award paper at SOSP 2005.

My current plans involve developing additional BAR primitives and building production quality systems designed under the BAR model.

Refereed Publications

H. Li, A. Clement, M. Marchetti, M. Kapritsos, L. Robison, L. Alvisi, and M. Dahlin. Flightpath: Obedience vs. Choice in Cooperative Services. Under Review.

A. Aiyer, L. Alvisi, R. Bazzi, and A. Clement. Matrix Signatures: From MACs to Digital Signatures in Distributed Systems. To appear in Symposium on distributed Computing (DISC), September 2008.

A. Clement, H. Li, J. Napper, J.P. Martin, L. Alvisi, and M. Dahlin. BAR Primer. Symposium on Dependable Systems and Networking (DSN) , July 2008

R. Kotla, L. Alvisi, M. Dahlin, A. Clement, and E. Wong. Zyzzyva: Speculative Byzantine Fault Tolerance. Symposium on Operating Systems Principles (SOSP), October 2007.

H.C. Li, A. Clement, A. Aiyer, and L. Alvisi. The Paxos Register. To appear at International Symposium on Reliable and Distributed Systems (SRDS), October 2007.

H.C. Li, A. Clement, J. Napper, E. Wong, I. Roy, L. Alvisi, and M. Dahlin. BAR Gossip. Operating System Design and Implementation (OSDI), November 2006.

A. Aiyer, L. Alvisi, A. Clement, M. Dahlin, J.P. Martin, and C. Porth. BAR Tolerance for Cooperative Services. Symposium on Operating Systems Principles (SOSP) , October 2005.

Technical Reports

A. Clement, M. Marchetti, E. Wong, L. Alvisi, and M. Dahlin. Aardvark: Making Byzantine Fault \ Tolerant Systems Tolerate Byzantine Faults. Under Review pdf

A. Clement, H. Li, J. Napper, J.P. Martin, L. Alvis, M. Dahlin. BAR Primer. The University of Texas at Austin, Department of Computer Sciences. Technical Report. Dec 11, 2007. pdf

A. Aiyer, L. Alvisi, A. Clement, and H.C. Li. Information-Theoretically Secure Byzantine Paxos. The University of Texas at Austin, Department of Computer Sciences. Technical Report TR-07-21. May 18, 2007.

A. Clement, J. Napper, H.C. Li, J.P. Martin, L. Alvisi, and M. Dahlin. Theory of BAR Games. The University of Texas at Austin, Department of Computer Sciences. Technical Report TR-06-63. November 29, 2006.

A. Clement, J. Napper, L. Alvisi, and M. Dahlin. BAR Games. The University of Texas at Austin, Department of Computer Sciences. Technical Report-06-25. May 30, 2006.

H.C. Li, L. Alvisi, and A. Clement. The Game of Paxos. The University of texas at Austin, Department of Computer Sciences. Technical Report TR-05-24. May 16, 2005.