• Scott Wolchok*, Owen S. Hofmann*, Nadia Heninger, Edward W. Felten, J. Alex Halderman, Christopher J. Rossbach, Brent Waters, Emmett Witchel
  * Both authors contributed equally
  Defeating Vanish with Low-Cost Sybil Attacks Against Large DHTs
  (PDF paper)(slides pptx pdf)
  In Proceedings of the 17th Network and Distributed System Security Symposium (NDSS), San Diego, California February, 2010.
  This work was reported in the New York Times, a UT press release, and Communications of the ACM.

• Christopher J. Rossbach, Owen S. Hofmann, Emmett Witchel
  Is Transactional Memory Programming Actually Easier?
  (PDF paper)(slides pptx pdf)
  In Proceedings of the 15th ACM Symposium on Principles and Practice of Parallel Programming (PPoPP), Bangalore, India January, 2010.
  

• Donald E. Porter, Owen S. Hofmann, Christopher J. Rossbach, Alex Benn, Emmett Witchel
  Operating System Transactions
  (PDF paper) (slides ppt pdf)
  In Proceedings of the  22nd ACM Symposium on Operating Systems Principles (SOSP), Big Sky, MT October 2009

• Christopher J. Rossbach, Owen S. Hofmann, Emmett Witchel
  Is Transactional Memory Programming Actually Easier?
  (PDF paper)(slides pptx pdf)
  In Proceedings of the  8th Annual Workshop on Duplicating, Deconstructing, and Debunking (WDDD), Austin, Texas June 2009

• Emmett Witchel
  Considerations for Mondriaan-like Systems
  (PDF paper)(slides pptx pdf)
  In Proceedings of the  8th Annual Workshop on Duplicating, Deconstructing, and Debunking (WDDD), Austin, Texas June 2009

• Indrajit Roy , Donald E. Porter, Michael D. Bond, Kathryn S. McKinley, Emmett Witchel
  Laminar: Practical Fine-Grained Decentralized Information Flow Control
  (PDF paper) (slides pptx pdf)
  In Proceedings of the ACM SIGPLAN Conference on Programming Language Design and Implementation (PLDI), Dublin, Ireland June 2009.

• Donald E. Porter, Emmett Witchel
  Operating Systems Should Provide Transactions
  (PDF   html  paper) (slides pptx pdf)
  In Proceedings of the 12th Workshop on Hot Topics in Operating Systems (HotOS), Monte Verità, Switzerland May 2009.

• Owen S. Hofmann, Christopher J. Rossbach, Emmett Witchel
  Maximum Benefit from a Minimal HTM
  (PDF paper)(slides pptx pdf)
  In International Conference on Architectural Support for Programming Languages and Operating Systems (ASPLOS-XIV), Washington DC March 2009.

• Hany E. Ramadan, Emmett Witchel
  The Xfork in the Road to Coordinated Sibling Transactions 
  (PDF paper)(slides ppt pdf)
  In Proceedings of the 4th ACM SIGPLAN Workshop on Transactional Programming (TRANSACT), Research Triangle Park, North Carolina February 2009.
  

• Hany E. Ramadan, Indrajit Roy , Maurice Herlihy, Emmett Witchel
  Committing Conflicting Transactions in an STM
  (PDF paper)(slides ppt pdf)
  In Proceedings of the 14th ACM Symposium on Principles and Practice of Parallel Programming (PPoPP), Research Triangle Park, North Carolina February 2009.
  

• Hany E. Ramadan, Christopher J. Rossbach , Emmett Witchel
  Dependence-Aware Transactions for Increased Concurrency. 
  (PDF paper)(slides ppt pdf)
  In Proceedings of the 41st International Symposium on Microarchitecture (MICRO), Lake Como, Italy November 2008.
  Christopher J. Rossbach  gave the talk.

• Christopher J. Rossbach, Owen S. Hofmann, Donald E. Porter,  Hany E. Ramadan, Aditya Bhandari, Emmett Witchel
  TxLinux and MetaTM: Transactional Memory and the Operating System
  (PDF paper)
  In Communications of the ACM , September 2008.
  

• Jonathan Wildstrom, Peter Stone, Emmett Witchel
  CARVE: a cognitive agent for resource value estimation. 
  (PDF paper)(slides ppt pdf)
  In The Fifth International Conference on Autonomic Computing (ICAC), Chicago, IL June 2008.

• Hany E. Ramadan,  Christopher J. Rossbach, Donald E. Porter, Owen S. Hofmann, Aditya Bhandari, Emmett Witchel
  MetaTM/TxLinux: Transactional Memory For An Operating System
  (PDF paper)
  In IEEE Micro Top Picks from Architecture Conferences of 2007 Jan/Feb 2008

• Christopher J. Rossbach, Owen S. Hofmann, Donald E. Porter,  Hany E. Ramadan, Aditya Bhandari, Emmett Witchel
  TxLinux: Using and Managing Transactional Memory in an Operating System
  (PDF paper) (slides ppt pdf)
  In Proceedings of the  21th ACM Symposium on Operating Systems Principles (SOSP), Stevenson, WA October 2007. [Audience choice award][CACM '08]

• Justin Brickell, Donald E. Porter,  Vitaly Shmatikov, Emmett Witchel
  Privacy-Preserving Remote Diagnostics
  (PDF paper) (slides ppt pdf)
  In Proceedings of the 14th ACM Conference on Computer and Communications Security (CCS), Alexandria, VA October 2007.

• Owen S. Hofmann, Donald E. Porter, Christopher J. Rossbach,  Hany E. Ramadan, Emmett Witchel
  Solving Difficult HTM Problems Without Difficult Hardware
  (PDF paper) (slides ppt pdf)
  In Proceedings of the 2nd Workshop on Transactional Computing (TRANSACT), Portland, OR August 2007.

• Hany E. Ramadan,  Christopher J. Rossbach, Donald E. Porter, Owen S. Hofmann, Aditya Bhandari, Emmett Witchel
  MetaTM/TxLinux: Transactional Memory For An Operating System
  (PDF paper) (slides ppt pdf)
  In Proceedings of the 34th International Symposium on Computer Architecture (ISCA), San Deigo, CA June 2007. [IEEE Micro Top Pick pdf]

• Jungwoo Ha, Christopher J. Rossbach, Jason V. Davis, Indrajit Roy, David L. Chen, Hany E. Ramadan,  Emmett Witchel
  Improved Error Reporting for Software that Uses Black-Box Components
  (PDF paper) (slides ppt pdf)
  In Proceedings of the ACM SIGPLAN 2007 Conference on Programming Language Design and Implementation (PLDI), San Deigo, CA June 2007.

• Donald E. Porter, Owen S. Hofmann, Emmett Witchel
  Is The Optimism in Optimistic Concurrency Warranted?
  (PDF paper) (slides keynote pdf)
  In Proceedings of the 11th Workshop on Hot Topics in Operating Systems (HotOS), San Diego, CA May 2007.

• Jonathan Wildstrom, Peter Stone, Emmett Witchel, and Mike Dahlin.
  Machine Learning for On-Line Hardware Reconfiguration. 
  (PDF paper)
  In The Twentieth International Joint Conference on Artificial Intelligence (IJCAI), Hyderabad, India Jan 2007.

• Jason V. Davis, Jungwoo Ha, Christopher J. Rossbach, Hany E. Ramadan, and Emmett Witchel
  Cost-Sensitive Decision Tree Learning for Forensic Classification
  (PDF paper) (slides ppt pdf) [short paper]
  In Proceedings of the The 17th European Conference on Machine Learning (ECML), Berlin, Germany September 2006.

• Hany E. Ramadan, Christopher J. Rossbach, and Emmett Witchel
  The Linux Kernel: A Challenging Workload for Transactional Memory
  (PDF paper) (slides ppt pdf)
  In Proceedings of the Workshop on Transactional Memory Workloads, Ottawa, Canada June 2006.

• Emmett Witchel, Junghwan Rhee, and Krste Asanovìc
  Mondrix: Memory Isolation for Linux using Mondriaan Memory Protection
  (PDF paper) (slides ppt pdf)
  In Proceedings of the 20th ACM Symposium on Operating Systems Principles (SOSP), Brighton, United Kingdom October 2005.

• Andrew Ayers, Chris Metcalf, Junghwan Rhee, Richard Schooler, Anant Agarwal, Emmett Witchel 
  TraceBack: First Fault Diagnosis by Reconstruction of Distributed Control Flow
  (PDF paper) (slides ppt pdf)
  In Proceedings of the ACM SIGPLAN 2005 Conference on Programming Language Design and Implementation (PLDI), Chicago, IL June 2005.

• Jonathan Wildstrom, Peter Stone, Emmett Witchel, Raymond J. Mooney, and Mike Dahlin.
  Towards Self-Configuring Hardware for Distributed Computer Systems. 
  (PDF paper)
  In The Second International Conference on Autonomic Computing (ICAC), June 2005.

• Emmett Witchel
  Mondriaan Memory Protection
  (PDF paper)
  Ph.D. dissertation, Massachusetts Institute of Technology, January, 2004.
  Honorable Mention, ACM Doctoral Disseration Award
  Winner of the George M. Sprowls award for outstanding doctoral dissertation.

• Emmett Witchel and Krste Asanovìc,
  Hardware Works, Software Doesn't: Enforcing Modularity with Mondriaan Memory Protection
  (PDF paper, PDF slides, PPT slides )
  Ninth Workshop on Hot Topics in Operating Systems (HotOS) Lihue, Hawaii, May 2003.

• Emmett Witchel, Josh Cates, and Krste Asanovìc,
  Mondrian Memory Protection
  (PDF paper, PPT slides, PDF slides )
  Tenth International Conference on Architectural Support for Programming Languages and Operating Systems (ASPLOS-X), San Jose, CA October 2002.

• Sam Larsen, Emmett Witchel, and Saman Amarasinghe,
  Increasing and Detecting Memory Address Congruence.
  (PDF paper, PS paper )
  In Proceedings of the 11th International Conference on Parallel Architectures and Compilation Techniques (PACT), Charlottesville, VA  September 2002.

• Krste Asanovìc, Mark Hampton, Ronny Krashinsky, and Emmett Witchel,
  Energy-Exposed Instruction Sets
  (pdf, Book Website)
  A chapter in Power Aware Computing, ed. by R. Graybill and R. Melhem, Kluwer Academic/Plenum Publishers, June 2002.

• Emmett Witchel, Sam Larsen, C. Scott Ananian, and Krste Asanovìc,
  Direct Addressed Caches for Reduced Power Consumption
  (PDF paper, PDF slides, )
  34th International Symposium on Microarchitecture (MICRO-34), Austin, TX, December 2001.

• Emmett Witchel and Krste Asanovìc,
  The Span Cache: Software Controlled Tag Checks and Cache Line Size.
  (postscript paper   pdf  paper)
  Proceedings of ISCA Workshop on Complexity Effective Design, Götenborg, Sweeden, July, 2001.

• David Mazières, Michael Kaminsky, M. Frans Kaashoek, and Emmett Witchel.
  Separating key management from file system security.
  In Proceedings of the 17th ACM Symposium on Operating Systems Principles (SOSP), Kiawah Island, SC, 1999. ACM. paper.

While getting my masters, and for a year after, I worked for Mendel Rosenblum, in the SimOS simulation group, which is part of the FLASH project at Stanford university, where I helped write these papers. They deal with fast machine simulation via dynamic binary translation, a characterization of operating system services based on the machine simulation technology, and a paper about the entire machine simulation system, not just the part I wrote.

• Emmett Witchel and Mendel Rosenblum,
  Embra: Fast and Flexible Machine Simulation.
  Proceedings of ACM SIGMETRICS '96: Conference on Measurement and Modeling of Computer Systems,
  Philadelphia, 1996.
  Available as: postscript (216 kB), PDF.
• Visit the Embra website.
• Mendel Rosenblum, Edouard Bugnion, Stephen A. Herrod, Emmett Witchel, and Anoop Gupta.
  The Impact of Architectural Trends on Operating System Performance.
  The 15th ACM Symposium on Operating Systems Principles (SOSP), Copper Mountain Resort, Colorado, Dec. 3-6,1995.
  Available as: postscript (544 kB), PDF.
• Mendel Rosenblum, Stephen A. Herrod, Emmett Witchel, and Anoop Gupta. Complete Computer Simulation: The SimOS Approach, in IEEE Parallel and Distributed Technology, Fall 1995.
   PDF paper