Prof. Hakim Weatherspoon Assistant Professor 4105C Upson Hall Computer Science Department Cornell University Ithaca, NY 14853 (607) 254-1257 hweather@cs.cornell.edu Research My research interests cover various aspects of information systems, distributed systems, network systems, and peer-to-peer systems. In these areas, I particularly focus on fault-tolerance, reliability, security, and performance of Internet-scale systems with decentralized---autonomous, federated, multi-organizational, and cooperative---control. I am an Alfred P. Sloan Fellow, and recipient of the National Science Foundation (NSF) CAREER award, DARPA Computer Science Study Panel (CSSP), IBM Faculty Award, the NetApp Faculty Fellowship, and the NSF Future Internet Architecture award. Please see my group webpage for further research details and the outstanding set of students that I work with, Research Group. Teaching CS 6410, Advanced Systems: Fall 2011, Fall 2010, Fall 2009 CS 6464, Advanced Distributed Storage Systems: Spring 2009 CS 4410 (formerly 414), Operating Systems: Fall 2008, Spring 2007 CS 3410 (formerly 314), Computer System Organization and Programming: Spring 2013, Spring 2012, Spring 2011 Projects Research Group Publications Books Future Directions in Distributed Computing, Research and Position Papers, Andre Schiper, Alex A. Shvartsman, Hakim Weatherspoon, Ben Y. Zhao (Eds.). Series: Lecture Notes in Computer Science. Volume. 2584 Heidelberg, Germany: Springer-Verlag Heidelberg, 2003. Awarded State-of-the-Art LNCS subseries! Journal Papers Maelstrom: Transparent Error Correction for Communication between Data Centers. Mahesh Balakrishnan, Tudor Marian, Ken Birman, Hakim Weatherspoon, Lakshmi Ganesh. Appears in IEEE/ACM Transactions on Networking (ToN), Vol 19, No 3, June 2011, pp 617-629. [ Paper: PDF (659 K) ] Summary of the 3rd ACM SIGOPS workshop on large-scale distributed systems and middleware (LADIS 2009), Hakim Weatherspoon, Doug Terry, and Gregory Chockler. Appears in ACM Operating Systems Review (OSR), Vol 43, No 4, December 2009, pp 3-4. [ Paper: PDF (165 K) ] GOSSIP: Gossiping Over Storage Systems Is Practical, Hakim Weatherspoon, Hugo Miranda, Konrad Iwanicki, Ali Ghodsi, Yann Busnel. Appears in ACM Operating Systems Review (OSR), Vol 41, No 5, October 2007, pp 75-81. [ Paper: PDF (165K), Postscript (1.1M), Compressed Postscript (601K) ] Exploiting the Synergy Between Gossiping and Structured Overlays, Ali Ghodsi, Seif Haridi, and Hakim Weatherspoon. Appears in ACM Operating Systems Review (OSR), Vol 41, No 5, October 2007, pp 61-66. [ Paper: PDF (113K), Postscript (708K), Compressed Postscript (383K) ] Maintenance-Free Global Data Storage, Sean Rhea, Chris Wells, Patrick Eaton, Dennis Geels, Ben Zhao, Hakim Weatherspoon, and John Kubiatowicz.  Appears in IEEE Internet Computing , Vol 5, No 5, September/October 2001, pp 40-49. (c) 2001 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. [ Abstract , Paper: PDF (195K), Postscript (1.2M), Compressed Postscript (481K) ] Thesis Design and Evaluation of Distributed Wide-Area On-line Archival Storage Systems, Hakim Weatherspoon. Appears in University of California, Berkeley PhD Dissertation, Technical Report No. UCB/EECS-2006-130, October 13, 2006 [ Abstract, Paper: PDF(2.1MB), Postscript(5.5MB), Compressed Postscript(1.0MB) ] Refereed Papers The Xen-Blanket: Virtualize Once, Run Everywhere, Dan Williams, Hani Jamjoom, and Hakim Weatherspoon. To appear in the Proceedings of the 7th ACM European Conference on Computer Systems (Eurosys), April 2012, Bern, Switzerland. [ Paper: PDF(989 KB), Postscript(2.7 MB), Compressed Postscript(818 KB) ] Unshakle the Cloud!, Dan Williams, Eslam Elnikety, Mohamed Eldehiry, Hani Jamjoom, Hai Huang, and Hakim Weatherspoon. Appears in Proceedings of the 3rd USENIX Workshop on Hot Topics in Cloud Computing (HotCloud), June 2011, Portland, CA. [ Paper: PDF (389 KB) ] Overdriver: Handling Memory Overload in an Oversubscribed Cloud, Dan Williams, Hani Jamjoom, Yew-Huey Liu, and Hakim Weatherspoon. Appears in Proceedings of the 2011 ACM SIGPLAN/SIGOPS International Conference on Virtual Execution Environments (VEE), March 2011, Newport Beach, CA. [ Paper: PDF(292 KB), Postscript(784 KB), Compressed Postscript(255 KB) ] Instrumentation for exact packet timings in networks, Daniel A. Freedman, Tudor Marian, Jennifer H. Lee, Ken Birman, Hakim Weatherspoon, Chris Xu. To appear in Proceedings of the 2011 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), May 2011, Binjiang, Hangzhou, China Exact temporal characterization of 10 Gbps optical wide-area network, Daniel A. Freedman, Tudor Marian, Jennifer H. Lee, Ken Birman, Hakim Weatherspoon, and Chris Xu. Appears in Proceedings of the 10th ACM SIGCOMM Internet Measurement Conference (IMC), November 2010, Melbourne, Australia [ Paper: PDF (5.7 MB) ] RACS: A Case for Cloud Storage Diversity, Hussam Abu-Libdeh, Lonnie Princehouse, Hakim Weatherspoon. Appears in Proceedings of the First ACM Symposium on Cloud Computing (SOCC), June 2010 [ Paper: PDF(282 KB), Postscript(2.8 MB), Compressed Postscript(1.3 MB) ] Empirical Characterization of Uncongested Lambda Networks and 10GbE Commodity Endpoints, Tudor Marian, Daniel A. Freedman, Ken Birman, Hakim Weatherspoon. Appears in Proceedings of 40th Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN), June 2010 [ Paper: PDF(347 KB) ] Cloudifying Source Code Repositories: How Much Does it Cost?, Michael Siegenthaler and Hakim Weatherspoon. Appears in Proceedings of the 3rd ACM SIGOPS International Workshop on Large Scale Distributed Systems and Middleware (LADIS'09), October 2009 [ Paper: PDF(530 KB) ] Smoke and Mirrors: Reflecting Files at a Geographically Remote Location Without Loss of Performance, Hakim Weatherspoon, Lakshmi Ganesh, Tudor Marian, Mahesh Balakrishnan, Ken Birman. Appears in Proceedings of the 7th USENIX Conference on File and Storage Technologies (FAST), February 2009 [ Paper: PDF(397 KB), Postscript(1.9 MB), Compressed Postscript(642 KB) ] Maelstrom: Transparent Error Correction for Lambda Networks, Mahesh Balakrishnan, Tudor Marian, Ken Birman, Hakim Weatherspoon, Einar Vollset. Appears in Proceedings of the 5th USENIX Symposium on Networked Systems Design and Implementation (NSDI), April 2008 [ Paper: PDF(1.3 MB) ] Optimizing Power Consumption in Large Scale Storage Systems, Lakshmi Ganesh, Hakim Weatherspoon, Mahesh Balakrishnan, Ken Birman. Appears in Proceedings of the 11th USENIX Workshop on Hot Topics in Operating Systems (HotOS), May 2007 [ Paper: PDF(96 KB), Postscript(293 KB), Compressed Postscript(50 KB) ] Antiquity: Exploiting a Secure Log for Wide-Area Distributed Storage, Hakim Weatherspoon, Patrick Eaton, Byung-Gon Chun, and John Kubiatowicz. Appears in Proceedings of the 2nd ACM European Conference on Computer Systems (Eurosys), March 2007 [ Abstract, Paper: PDF(335 KB), Postscript(1.6 MB), Compressed Postscript(673 KB) ] Efficient Replica Maintenance for Distributed Storage Systems, Byung-Gon Chun, Frank Dabek, Andreas Haeberlen, Emil Sit, Hakim Weatherspoon, M. Frans Kaashoek, John Kubiatowicz, and Robert Morris. Appears in Proceedings of the 3rd USENIX Symposium on Networked Systems Design and Implementation (NSDI), May 2006 [ Abstract, Paper: PDF(245 KB), Postscript(1.78MB), Compressed Postscript(788KB) ] Proactive replication for data durability, Emil Sit, Andreas Haeberlen, Frank Dabek, Byung-Gon Chun, Hakim Weatherspoon, Robert Morris, M. Frans Kaashoek, and John Kubiatowicz. Appears in Proceedings of the Fifth International Workshop on Peer-to-Peer Systems (IPTPS), February 2006 [ Abstract, Paper: PDF(230KB), Postscript(602KB), Compressed Postscript(83KB) ] ChunkCast: An Anycast Service for Large Content Distribution, Byung-Gon Chun, Peter Wu, Hakim Weatherspoon, and John Kubiatowicz. Appears in International Workshop on Peer-to-Peer Systems (IPTPS '06), February 2006 [ Abstract, Paper: PDF(158K), Postscript(1.1M) ] Efficiently Binding Data to Owners in Distributed Content-Addressable Storage Systems, Patrick Eaton, Hakim Weatherspoon, and John Kubiatowicz. Appears in Proceedings of the 3rd International IEEE Security in Storage Workshop (IEEE SISW 2005), December 2005 [ Abstract, Paper: PDF(156 KB), Postscript(349 KB) ] Pond: the OceanStore Prototype,   Sean Rhea, Patrick Eaton, Dennis Geels, Hakim Weatherspoon, Ben Zhao, and John Kubiatowicz. Appears in Proceedings of the 2nd USENIX Conference on File and Storage Technologies (FAST), March 2003 Awarded best student paper! [ Abstract , Paper: PDF (192K), Postscript (267K), Compressed PostScript (91K) ]   Introspective Failure Analysis: Avoiding Correlated Failures in Peer-to-Peer Systems, Hakim Weatherspoon, Tal Moscovitz, and John Kubiatowicz. Appears in Proceedings of International Workshop on Reliable Peer-to-Peer Distributed Systems, Oct 2002. [ Abstract, Paper: PDF (88K), Postscript (165K), Compressed Postscript (53K) ]   Efficient Heartbeats and Repair of Softstate in Decentralized Object Location and Routing Systems, Hakim Weatherspoon and John Kubiatowicz. Appears in Proceedings of the SIGOPS European Workshop 2002, Sep 2002. [ Abstract, Paper: PDF (95K), Postscript (106K), Compressed Postscript (38K) ]   Naming and Integrity: Self-Verifying Data in Peer-to-Peer Systems, Hakim Weatherspoon and John Kubiatowicz. Appears in Proceedings of the International Workshop on Future Directions in Distributed Computing (FuDiCo 2002), June 2002. [ Abstract, Paper: PDF (45K), Postscript (89K), Compressed Postscript (30K) ]   Erasure Coding vs. Replication: A Quantitative Comparison , Hakim Weatherspoon and John Kubiatowicz.  Appears in Proceedings of the First International Workshop on Peer-to-Peer Systems (IPTPS 2002), March 2002. [ Abstract , Paper: PDF (117K), Postscript (114K), Compressed Postscript (45K) ]   OceanStore: An Architecture for Global-Scale Persistent Storage ,  John Kubiatowicz, David Bindel, Yan Chen, Steven Czerwinski, Patrick Eaton, Dennis Geels, Ramakrishna Gummadi, Sean Rhea, Hakim Weatherspoon, Westley Weimer, Chris Wells, and Ben Zhao.  Appears in Proceedings of the Ninth international Conference on Architectural Support for Programming Languages and Operating Systems (ASPLOS 2000), November 2000. [ Abstract , Paper: PDF (130K), Postscript (309K), Compressed Postscript (98K) ] Technical Reports Long-Term Data Maintenace in Wide-Area Storage Systems: A Quantitative Approach, Hakim Weatherspoon, Byung-Gon Chun, Chiu Wah So, and John Kubiatowicz. Appears in Technical Report UCB/CSD-05-1404, July 2005 [ Abstract, Paper: PDF(337K), Postscript(939K) ] Two-Level, Self-Verifying Data for Peer-to-Peer Storage, Patrick Eaton, Hakim Weatherspoon, and John Kubiatowicz. Appears in U.C. Berkeley Technical Report UCB//CSD-05-1401, June 2005 [ Abstract, Paper: PDF(118 KB), Postscript(256 KB) ] Silverback: A Global-Scale Archival System ,  Hakim Weatherspoon, Chris Wells, Patrick R. Eaton, Ben Y. Zhao, and John D. Kubiatowicz.  U. C. Berkeley Technical Report: UCB//CSD-01-1139, March 2001. [ Abstract , Paper:PDF (260K), Postscript (537K), Compressed Postscript (135K) ]   OceanStore: An Extremely Wide-Area Storage System ,  John Kubiatowicz, David Bindel, Yan Chen, Patrick Eaton, Dennis Geels, Ramakrishna Gummadi, Sean Rhea, Hakim Weatherspoon, Westley Weimer, Chris Wells, and Ben Zhao.  U.C. Berkeley Technical Report UCB//CSD-00-1102, May 2000. [ Abstract , Paper: PDF (242K), Postscript (300K), Compressed Postscript (90K) ]   Personal I received my PhD in 2006 from the University of California, Berkeley, in the area of secure and fault-tolerant distributed wide-area storage systems (e.g. Antiquity, OceanStore, etc.). I received a B.S. in Computer Engineering from the University of Washington in 1999. And some more info... Co-chair for the fourth ACM Symposium of Cloud Computing (SoCC), 2013 personal stuff. Last modified: Fri Apr 13 10:38:17 EDT 2012 Hakim Weatherspoon hweather@cs.cornell.edu