Jehan-François Pâris
Professor of Computer Science

Department of Computer Science
University of Houston
569 Philip G. Hoffman Hall
Houston, Texas 77204-3010

Office: (713) 743-3341 (during office hours)
Fax: (713) 743-3335 (Please add ATTN: J.-F. Pâris)
Office Hours: MW 4:30 -5:00 and 7:15-7:45 pm until November 30.
Email: jfparis (at sign) uh (dot) edu

Bio: (CV)

Before joining the University of Houston, Dr. Pâris was faculty at Purdue University and the University of California, San Diego. He received his Ingénieur Civil degree from the Université Libre de Bruxelles, Belgium, his Diplôme d'Etudes Approfondies from the Université Pierre et Marie Curie (Paris VI), France, his Licence et Maîtrise en Informatique from the Université de Namur, Belgium and his PhD in EECS from the University of California, Berkeley.

Courses Taught:

COSC 1306: Computer Science and Programming (fall 2016)
COSC 3330/6308: Computer Architecture (fall 2012)
COSC 3360/6310: Fundamentals of Operating Systems (spring 2017)
COSC 6340: Databases (spring 2015)
COSC 6360: Operating Systems (fall 2016)
COSC 7360: Advanced Operating Systems (spring 2011)

Research:

My background is in applied performance evaluation. I look at problems where the choice of the right policy has a direct impact on the performance of computer systems. Depending of the problem, my co-authors and I have used probabilistic models, discrete-event simulation, and/or trace-driven simulation. My two current areas of interest are

Data survivability in storage systems: As many organizations now keep on line vast amounts of data for very long periods of time, we need to figure the best ways to protect these data against equipment failures.
Predicting disk failures: We try to predict which disks are the most likely to fail within, say, a month from now so we can replace them before they fail.

Most of my work is joint work with colleagues and associate members of the Storage Systems Research Center of the University of California, Santa Cruz,

I have openings for master's or doctoral students desirous to take me as an adviser but can only offer support through TA positions. I am especially looking for one or two MS students willing to work hard to complete their MS theses in twelve months or less.

Recent Publications: (all online publications)

V. Estrada-Galiñanes, J.-F. Pâris and P. Felber, Simple Data Entanglement Layouts with High Reliability, Proceedings of the 35^th International Performance of Computers and Communication Conference (IPCCC 2016), Las Vegas, NV, Dec. 2015, to appear.

J.-F. Pâris, T. Schwarz, S. J. and D. D. E. Long, Improving Disk Array Reliability Through Faster Repairs, Proceedings of the 35^th International Performance of Computers and Communication Conference (IPCCC 2016), Las Vegas, NV, Dec. 2015, to appear.

T. Schwarz, S. J., A. Amer, T. Kroeger, E. L. Miller, D. D. E. Long and J.-F. Pâris, Reliable Storage at Exabyte Scale, Proceedings of the 24^th International Symposium on Modeling, Analysis and Simulation of Computer and Telecommunication Systems (MASCOTS 2016), London, GB, Sep. 2106. (Best paper award)

J.-F. Pâris and D. D. E. Long, Pirogue, a lighter dynamic version of the Raft distributed consensus algorithm, Proceedings of the 34^th International Performance of Computers and Communication Conference (IPCCC 2015), Nanjing, China, Dec. 2015, (Best paper runner-up).

T. Schwarz, S. J., D. D. E. Long and J.-F. Pâris, Triple failure tolerant storage systems using only exclusive-or parity calculations, Proceedings of the 21^st IEEE Pacific Rim International Symposium on Dependable Computing (PRDC 2015), Zhangjiajie, China, Nov. 2015.

T. Schwarz, S. J., A. Amer, and J.-F. Pâris, Combining Low IO-Operations During Data Recovery with Low Parity Overhead in Two-Failure Tolerant Archival Storage, Proceedings of the 21^st IEEE Pacific Rim International Symposium on Dependable Computing (PRDC 2015), Zhangjiajie, China, Nov. 2015.

J.-F. Pâris and D. D. E. Long, Reducing the Energy Footprint of a Distributed Consensus Algorithm, Proceedings of the 11^th European Dependable Computing Conference (EDCC 2015), Paris, France, Sep. 2015.

J.-F. Pâris, A. Amer, D. D. E. Long and T. Schwarz, S. J. Self-Repairing Disk Arrays, Fifth International Workshop on Adaptive Self-tuning Computing Systems (ADAPT 2015), Amsterdam, NL, Jan. 2015.

J.-F. Pâris, T. Schwarz, S. J., A. Amer and D. D. E. Long , Protecting RAID Arrays Against Unexpectedly High Disk Failure Rates, Proceedings of the 20^th IEEE Pacific Rim International Symposium on Dependable Computing (PRDC 2014), Singapore, pp. 68-75, Nov. 2014.

J.-F. Pâris, D. D. E. Long and T. Schwarz, S. J., Zero-Maintenance Disk Arrays, Proceedings of the 19^th IEEE Pacific Rim International Symposium on Dependable Computing (PRDC 2013), Vancouver, BC, Canada, pp. 140-141, Dec. 2013.

T. Schwarz, S.J., D. D. E. Long and J.-F. Pâris, Reliability of Disk Arrays with Double Parity, Proceedings of the 19^th IEEE Pacific Rim International Symposium on Dependable Computing (PRDC 2013), Vancouver, BC, Canada, pp. 108-117, Dec. 2013.

J.-F. Pâris, D. D. E. Long and W. Litwin, Three-Dimensional Redundancy Codes for Archival Storage, Proceedings of the 21^st International Symposium on Modeling, Analysis and Simulation of Computer and Telecommunication Systems (MASCOTS 2013), San Francisco, CA, pp. 328–332, Aug. 2013.

H.-W. Kao, J.-F. Pâris, T. Schwarz, S.J., and D. D. E. Long, A Flexible Simulation Tool for Estimating Data Loss Risks in Storage Arrays, Proceedings of the 29^th IEEE Conference on Massive Data Storage (MSST '13), Long Beach, CA, pp. 1-5, May 2013.

T. Schwarz, S.J., I. Corderí, D. D. E. Long and J.-F. Pâris, Simple, Exact Placement of Data in Containers, Proceedings of the 2013 International Conference on Computing, Networking and Communications (ICNC 2013), San Diego, CA, pp. 978-982, Jan. 2013.

J.-F. Pâris, T. Schwarz, S.J., A. Amer and D. D. E. Long, Highly Reliable Two-Dimensional RAID Arrays for Archival Storage, Proceedings of the 31^stInternational Performance of Computers and Communication Conference (IPCCC 2012), Austin, TX, pp. 324-331, Dec. 2012.

J.-F. Pâris and A. Amer, Delayed Chaining: A Practical P2P Solution for Video-on-Demand, Proceedings of the 8^thInternational Workshop on Networking Issues in Multimedia Entertainment (NIME '12), Munich, Germany, July 2012.

J.-F. Pâris, A. Amer and T. J. Schwarz. Low-Redundancy Two-Dimensional RAID Arrays, Proceedings of the 2012 International Conference on Computing, Networking and Communications (ICNC 2012), Maui, HI, Jan.-Feb. 2012.

J.-F. Pâris, A. Nagar, A. Amer and T. J. Schwarz. Pay-To-Play: An Incentive Mechanism for Chaining Protocols for Video Streaming, Proceedings of the 10^th International Information and Telecommunication TechnologieS Conference (I2TS 2011), Florianopolis, SC, Brazil, Dec. 2011.

A. Amer, J. Holliday, D. D. E. Long, E. L. Miller, J.-F. Pâris and T. J. Schwarz. Data Management and Layout for Shingled Magnetic Recording, IEEE Transactions on Magnetics, Vol. 47, No 10, Oct. 2011.