ISSDM Faculty

ISSDM Director

Carlos Maltzahn
Adjunct Professor, Computer Science and Engineering
Director, Systems Research Lab (SRL)
Director, Center for Research in Open Source Software (CROSS)
Director, Institute for Scalable Scientific Data Management (ISSDM)

Engineering 2, Room 369
By appointment

Carlos Maltzahn is the founder and director of the UC Santa Cruz Center for Research in Open Source Software (CROSS). Dr. Maltzahn also co-founded the Systems Research Lab, known for its cutting-edge work on big data storage & processing, scalable data management, and distributed systems performance management. Carlos joined UC Santa Cruz in 2004, after five years at Netapp working on network-intermediaries and storage systems. In 2005 he co-founded and became a key mentor on Sage Weil’s Ceph project. In 2008 Carlos became a member of the computer science faculty at UC Santa Cruz and has graduated seven Ph.D. students since. Carlos graduated with a M.S. and Ph.D. in Computer Science from University of Colorado at Boulder.

ISSDM Director (on leave)

Scott Brandt
Vice Chancellor for Research
Professor, Computer Science and Engineering

Engineering 2, Room 347B

Scott Brandt is Professor of Computer Science, the UCSC Director of the ISSDM and Director of the UCSC Systems Research Laboratory. He is also co- founder of the UCSC Storage Systems Research Center. Scott's research is in the area of Computer Systems. He specializes in both storage systems and real-time systems. His current storage system research focuses on high-performance peta-scale distributed object-based storage, while his real-time research focuses on integrating real-time and non-real-time processing into a uniform processing environment. His most recent research intregrates the two, researching novel solutions for robust guaranteeable management of varied system resources, including CPU, disk, memory, and network.

James Davis
Professor, Computer Science and Engineering

Engineering 2, Room 363
(None during finals week or summer). Email times you are available for a call.

James Davis is a Professor in Computer Science at the University of California, Santa Cruz. He received his PhD from Stanford University in 2002, and was previously a senior research scientist at Honda Research Institute. His existing research expertise is in computer graphics, machine vision, and sensing systems for building digital models of the real world, work that has resulted in over 80 peer-reviewed publications, patents, and invited talks, received best paper awards at ICRA 2003, ICCV 2009, and an NSF CAREER award. His research has been commercialized by companies including Sony and PrenticeHall. He was the Founding Director of the Center for Entrepreneurship at UCSC, and sits on advisory councils for a handful of startups and nonprofits. He is now interested in research applying technology to address global social issues, and has developed an award winning course around this theme.

Luca de Alfaro
Professor, Computer Science and Engineering

Engineering 2, Room 339A

Dr. Luca de Alfaro works in the areas of crowdsourcing, reputation systems, game theory and incentives, and formal methods.

David Helmbold
Professor, Computer Science and Engineering

Engineering 2, Room 345B
Fall 2019: Mon Wed 4:00 pm - 5:00 pm (class priority) and Thurs 1:30-2:30.

Dr. David Helmbold's current research centers around machine learning and computational learning theory. In addition, to theoretical work, he has applied learning algorithms to practical problems such as determining when to spin down a disk drive in a portable computer to save power.

Herbert Lee
Vice Provost for Academic Affairs and Campus Diversity Officer for Faculty
Professor, Statistics

831-459-1655 (Engineering Office)
831-459-1349 (Kerr Hall Office)
E2 537A
Kerr Hall 215
by appointment

Alex Pang
Professor, Graduate Program Director, Computer Science and Engineering

Engineering 2, Room 359

Dr. Alex Pang is a professor in the Computer Science Department.

He got his PhD from UCLA in 1990 and his undergraduate degree from

the University of the Philippines in 1981.

Bruno Sansó
Professor, Statistics

Baskin Engineering, Room 361C

Donald M. Wiberg
Professor Emeritus, Electrical Engineering, UCLA

831-459-5560 (office)
831-246-3763 (cell)
Engineering 2, Room 241A
by appointment only

Since 2000, Don has been teaching and researching at UCSC in both Dept. of Electrical and Dept. of Computer Engineering at UCSC, and was a researcher in the Center for Adaptive Optics there (2001 - 2011). Don is a Life Fellow of IEEE. Don retired as Professor of Engineering and Applied Science in the Electrical Engineering Department at UCLA in 1994, after 29 years there. He was also Professor of Anesthesiology at UCLA. In 1995 he served as Sen. Tom Harkin’s (Dem. IA) Legislative Assistant in Defense Appropriations, Energy, Environment, Arms Control, and Veteran’s Affairs as IEEE Congressional Fellow. He was a Fulbright Senior Fellow in Denmark in 1976-7 and in Norway in 1983-4, and he visited at DFVLR, Munich, 1969-70, U. Newcastle, Aus., 1989-90, U. Maryland, 1993-94, and Ajou U., Suwan, South Korea, 2006-07.

Yi Zhang
Professor, Computer Science and Engineering

831-459-4549 (Office)
Engineering 2, Room 565
By appointment

Dr. Zhang is a Professor in School of Engineering, University of California Santa Cruz. Her research interests include large scale information retrieval, recommendation systems, internet advertising, data mining, natural language processing, and applied machine learning. She has published chapters, journal articles, and papers at top conferences in these areas, such ACM SIGIR, WWW, CIKM, IEEE ICDM, ICML, COLINGS, HLT. She received NSF Faculty Early Career Award in 2010, an Air Force Research Young Investigator Award in 2008, the Best Paper Award at ACM SIGIR in 2002, and several other awards. Her Information Retrieval and Knowledge Management Lab is doing research sponsored by several government agencies and companies (Microsoft, Yahoo, Google, NEC, Bosch, Nokia etc.). She has served as a consultant or technical advisor for companies. She regularly serves on the program committees of the very best conferences in her research areas. She has served as area chair or senior PC member at ACM SIGIR, EMNLP, and ACM Recommender Systems. She has served as conference co-chair in charge of Information Retrieval area at the ACM Conference on Information and Knowledge Management, and tutorial chair for ACM SIGIR. She served as an associate editor for ACM Transaction on Information Systems. Dr. Zhang received her Ph.D. from School of Computer Science at Carnegie Mellon University, specializing in Language and Information Technologies.

Affiliated Faculty

Alexandre Brandwajn
Professor Emeritus, Computer Engineering

Engineering 2, Room 223

Alexandre Brandwajn received the Ingenieur Civil degree from the Ecole Nationale Superieure des Telecommunications, Paris, France, and the Doctor-Ingenieur and Docteur es-Sciences degrees from the University of Paris VI. He started his carrer as a researcher at I(N)RIA, France, in the area of operating system performance evaluation and solution methods for queueing models of computer performance. Leter, hee joined the the Ecole Nationale Superieure de Telecommunications where he was a professor of computer science for four years. He was with Amdahl Corporation, Sunnyvale, California, where he was the manager of Systems Analysis, prior to joining UCSC.

He is currently professor of Computer Engineering at UCSC.

Cormac Flanagan
Professor, Computer Science and Engineering

Engineering 2, Room 367

Cormac Flanagan is a Professor of Computer Science at the University of California, Santa Cruz (UCSC), where he leads the Software and Languages Research Group. Prior to joining UCSC in 2003, he was a Principal Research Scientist at Hewlett Packard Corporation, at Compaq Computer Corporation, and at Digital Equipment Corporation. He received the B.S. degree in Computer Science and Mathematics from University College Dublin, Ireland in 1990; and the M.S. and Ph.D. degrees in Computer Science from Rice University, in 1995 and 1997 respectively.

Dr. Flanagan holds 6 U.S. patents and has published 85 journal and conference papers. He is the recipient of an Alfred P. Sloan Foundation Fellowship, a Most Influential PLDI Paper Award, as well as Distinguished Paper awards at ECOOP and ISSTA. His research has been supported by the NSF, DoD, Microsoft, IBM, UC and others.

J. J. Garcia-Luna-Aceves
Distinguished Professor, Computer Science and Engineering
Jack Baskin Endowed Professor of Computer Engineering
CITRIS Campus Director

831-459-4153 (Office)
Engineering 2, Room 317
By appointment.

J.J. Garcia-Luna-Aceves received the B.S. degree in Electrical Engineering from the Universidad Iberoamericana, Mexico City, Mexico in 1977; and the M.S. and Ph.D. degrees in Electrical Engineering from the University of Hawaii at Manoa, Honolulu, HI in 1980 and 1983, respectively.

He is a Distinguished Professor of Computer Science and Engineering at the University of California, Santa Cruz (UCSC) and is a Principal Scientist at the Palo Alto Research Center (PARC). Prior to joining UCSC in 1993 he was a Center Director at SRI International (SRI) in Menlo Park, California. He has been a Visiting Professor at Sun Laboratories in Menlo Park, California, and a Principal of Protocol Design at Nokia in Mountain View, California.

Dr. Garcia-Luna-Aceves was elected a Corresponding Member of the Mexican Academy of Sciences in 2013; and is a fellow of the Institute of Electrical and Electronics Engineers (IEEE), the Association for Computing Machinery (ACM), and the American Association for the Advancement of Science (AAAS).

He received the 2016 IEEE MILCOM Technical Achievement Award for sustained contributions to military communications.

He received the IEEE Computer Society Technical Achievement Award in 2011 "for pioneering contributions to the theory and design of communication protocols for ad-hoc wireless networks." He received the IEEE Communications Society Ad Hoc and Sensor Networks Technical Committee (AHSN TC) Technical Recognition Award in 2012 “for fundamental contributions to the theory and design of communication protocols for routing and channel access in ad-hoc wireless networks.”

He is the co-recipient of the IEEE Fred W. Ellersick 2008 MILCOM Award for best unclassified paper. He is also co-recipient of Best Paper Awards at IEEE IPCCC 2018, the European Wireless Conference 2010, IEEE MASS 2008, SPECTS 2007, IFIP Networking 2007, and IEEE MASS 2005 conferences, and of the Best Student Paper Award of the 1998 IEEE International Conference on Systems, Man, and Cybernetics. He received the SRI International Exceptional-Achievement Award in 1985 and 1989.

Dr. Garcia-Luna-Aceves holds 66 U.S. patents and has published more than 500 papers in journals, conferences, and books. He has directed more than 40 Ph.D. theses and more than 30 M.S. theses since he joined UCSC in 1993. He has served as the Chair of the ACM Special Interest Group on Multimedia and as General Chair of numerous conferences, including IEEE ICNC 2016, ACM MSWIM 2015, ACM MobiCom 2008, IEEE SECON 2005, ACM Multimedia '93, and ACM SIGCOMM '88. He has also served as Program Chair of ACM MobiHoc 2002, ACM MobiCom 2000, IEEE MULTIMEDIA '92, ACM SIGCOMM '87, and ACM SIGCOMM '86. He has served in the IEEE Internet Technology Award Committee, the IEEE Richard W. Hamming Medal Committee, and the National Research Council Panel on Digitization and Communications Science of the Army Research Laboratory Technical Assessment Board.

Dr. Garcia-Luna-Aceves directs the Computer Communication Research Group (CCRG) and serves as the campus director of CITRIS and the Banatao Institute.

Kevin Karplus
Professor, Biomolecular Engineering

Physical Sciences Bldg, Room 318
On leave F19

See my personal web page for more information about me.

Phokion G. Kolaitis
Distinguished Professor

Engineering 2, Room 345A

Phokion Kolaitis is a Distinguished Professor at UC Santa Cruz and a Principal Research Staff Member at the IBM Almaden Research Center.

Kolaitis is a Fellow of the Association for Computing Machinery (ACM), a Foreign Member of the Finnish Academy of Science and Letters, and the recipient of a 1993 Guggenheim Fellowship. He is also the recipient of two IBM Research Division Outstanding Innovation Awards, an IBM Research Division Outstanding Technical Achievement Award, a co-winner of the 2013 ICDT Test-of-Time Award, and a co-winner of both the 2008 and the 2014 ACM PODS Alberto O. Mendelzon Test-of-Time Award. In 2014, Kolaitis was awarded an Honorary Doctorate Degree (Doctor Honoris Causa) from the National and Kapodistrian University of Athens, Greece.

Darrell Long
Distinguished Professor, Engineering
Kumar Malavalli Endowed Professor of Storage Systems Research
Director of Storage Systems Research Center (SSRC)
Director of Secure Systems Laboratory (SSL)

Engineering 2, Room 331

Dr. Darrell D. E. Long is Distinguished Professor of Engineering at the University of California, Santa Cruz. He holds the Kumar Malavalli Endowed Chair of Storage Systems Research and is Director of the Storage Systems Research Center.

He received his B.S. degree in Computer Science from San Diego State University, and his M.S. and Ph.D. from the University of California, San Diego.

In 2006 he was elevated to Fellow of the Institute of Electrical and Electronics Engineers (IEEE) "for contributions to storage systems architecture and performance". In 2008 he was inducted a Fellow of the American Association for the Advancement of Science (AAAS). He is a member of the IEEE Computer Society, the Association for Computing Machinery, the American Society for Engineering Education, the Usenix Association, Upsilon Pi Epsilon and Sigma Xi.

He has held visiting faculty positions at the Université Paris—Dauphine (Paris IX), the Conservatoire National des Arts et Métiers, the Université Paris—Descartes (Paris V), the University of Technology, Sydney, the Center for Communications Research, the United States Naval Postgraduate School and is Professor ad Honorem de la Universidad Católica del Uruguay. He is an Associate Member of the European Organization for Nuclear Research (CERN).

Ethan L. Miller
Professor, Computer Science and Engineering
Veritas Presidential Chair in Storage
Director, NSF I/UCRC Center for Research in Storage Systems

831-459-1222 (office)
831-345-4864 (cell)
Engineering 2, Room 337A
Monday 2-4PM

Professor Miller is the Director of the Center for Research in Storage Systems and the Associate Director of the Storage Systems Research Center at UC Santa Cruz. His primary research interests are in file and storage systems and, more generally, distributed systems and operating systems. His current projects include archival storage systems, scalable file system indexing, file systems for next-generation storage technologies, file system security, and petabyte-scale storage systems. His research interests also include storage system benchmarks, algorithms to more efficiently manage storage, and information retrieval from very large text and multimedia corpora as well as other problems in computer systems and security.

John Musacchio
Professor, Computer Science and Engineering

Engineering 2, Room 557

John Musacchio is an associate professor with the new Technology and Information Management Program at the University of California Santa Cruz. Professor Musacchio’s research interests include network economics, game theory, stochastic modeling and control of queuing networks with applications in communications networks.

Katia Obraczka
Professor, Computer Science and Engineering

Engineering 2, Room 323

Katia Obraczka is a Professor at UC Santa Cruz's Jack Baskin School of Engineering. Her research and teaching interests include computer networks, distributed systems, Internet information systems, and operating systems.

Jose Renau
Professor, Computer Science and Engineering

Engineering 2, Room 227
Monday, 3:30PM to 4:30PM

Jose Renau ( is a professor of computer engineering at the University of California, Santa Cruz.

His research focuses on computer architecture, including design effort metrics and models, infrared thermal measurements,

low-power and thermal-aware designs, process variability, thread level speculation, FPGA/ASIC design, Fluid Pipelines, Pyrope a

modern hardware description language, and Live flows improve the productivity of hardware designs. Renau has a PhD in Computer Science from the University of Illinois at Urbana-Champaign.

Allen Van Gelder
Professor, Computer Science and Engineering

Engineering 2, Room 355
Please see:

Dr. Allen Van Gelder research interests include development of algorithms for propositional satisfiability, methods for verifiable software, theorem proving, analysis of algorithms, parallel algorithms, computer graphics, and scientific visualization. He received a National Science Foundation Presidential Young Investigator Award in 1989 to investigate the use of logic programming for problems in database and artificial intelligence systems.

Anujan Varma
Professor, Computer Science and Engineering

Engineering 2, Room 221

Manfred Warmuth
Professor Emeritus, Computer Science

Engineering 2, Room 357

Dr. Manfred Warmuth works in the areas of Machine Learning and Recognition.