Public:Syschat

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Syschat is an informal weekly meeting, whose goal is to foster the exchange of ideas and feedback among members of the UMD systems group. To be informed of upcoming Syschats and related events, subscribe to the Syschat mailing list. If you would like to present, please contact Rama (ramapad{at}cs.umd.edu).

Syschat takes place on Wednesdays at 4-5 pm in 3258 AVW.

Spring 2012

  • Feb 10, Group Discussion: Scalable Consistency in Scatter (link), Lisa Glendenning, Ivan Beschastnikh, Arvind Krishnamurthy, Thomas Anderson
    • Distributed storage systems often trade off strong semantics for improved scalability. This paper describes the design, implementation, and evaluation of Scatter, a scalable and consistent distributed key-value storage system. Scatter adopts the highly decentralized and self-organizing structure of scalable peer-to-peer systems, while preserving linearizable consistency even under adverse circumstances. Our prototype implementation demonstrates that even with very short node lifetimes, it is possible to build a scalable and consistent system with practical performance.
    • (Since it is a Group Discussion, we're asking everyone to read the paper ahead of time and come prepared to discuss it, if possible. Thanks!)

Past Semesters

Fall 2011

  • Sept 14, Misha Rabinovich: Content Delivery Networks: Myths and Reality
  • Sept 21, Randy Baden: Predicting and Tracking Internet Path Changes, Sigcomm 2011
  • Sept 28, Jessy Schingler: A Search-based Network Architecture for Mobile Devices, Erik Nordström, Per Gunningberg, and Christian Rohner
  • Oct 5, Mike Lam: (untitled)
  • Oct 12, Greg Benjamin: What’s the Difference? Efficient Set Reconciliation without Prior Context, David Eppstein, Michael T. Goodrich, Frank Uyeda, and George Varghese (from SIGCOMM 2011)
  • Oct 17, Rama Padmanabhan: White Space Networking with Wi-Fi like Connectivity, Paramvir Bahl , Ranveer Chandra , Thomas Moscibroda , Rohan Murty, and Matt Welsh (from SIGCOMM 2009)
  • Oct 26, Video: A New Way to Look at Networking, Van Jacobson (link)
  • Nov 2, Group Discussion: Networking Named Content (link), Van Jacobson, Diana K. Smetters, James D. Thornton, Michael F. Plass, Nicholas H. Briggs, Rebecca L. Braynard
  • Nov 9, Arvind Narayanan: Location Privacy via Private Proximity Testing (link), Arvind Narayanan, Narendran Thiagarajan, Mugdha Lakhani, Mike Hamburg, and Dan Boneh
  • Nov 16, postponed: (conflict with AI social and other things...)
  • Nov 23, cancelled: (thanksgiving)
  • Nov 30, Group Discussion:
    • Bitcoin: A Peer-to-Peer Electronic Cash System (link), Satoshi Nakamoto
    • Hashcash: A Denial of Service Counter-Measure (link), Adam Back
  • Dec 7, postponed: (rain and people being too busy...)
  • Dec 14, cancelled: (study day)

Spring 2011

  • Feb 1 Jeff:DONAR: Decentralized Server Selection for Cloud Services (SigComm 2010)
  • Feb 8 lex: Replication in Cimbiosys and WinFS (NSDI 2009 and a technical report from D. Terry )
  • Feb 18 Rob Sherwood (Invited Talk): Can the Production Network Be the Test-bed? (OSDI 2010)
  • Feb 22 Sebastian: Whānau: A Sybil-proof Distributed Hash Table (NSDI 2010)
  • Feb 29 Randy: A Security API for Distributed Social Networks (NDSS 2011)
  • Mar 8 Video: Airavat: Security and Privacy for MapReduce (NSDI 2010) [by Jeff]
  • Mar 15 lex: PRACTI Replication (NSDI 2006)
  • Mar 22 Spring Break
  • Mar 29 Video: A Study of Practical De-duplication (FAST 2011) [by lex]
  • Apr 5 Randy: Accurate, Low-Energy Trajectory Mapping for Mobile Devices (NSDI'11)
  • Apr 12 Jeff: Schism: a workload-driven approach to database replication and partitioning (VLDB'10)
  • Apr 19 Aaron: Bartendr: a practical approach to energy-aware cellular data scheduling
  • Apr 26 Video: Paxos Replicated State Machines as the Basis of a High-Performance Data Store [by lex] (NSDI'11)
  • May 5 Video: Design, Implementation and Evaluation of Congestion Control for Multipath TCP (NSDI'11) [by Randy]

Fall 2010

  • 9/22 - lex - "Youbiq Extravaganza"
    • Brief description of Youbiq Project as well as presentation of some recent related projects including the OSDI 2006 Persistent Personal Names for Globally Connected Mobile Devices, the FAST 2009 Perspective: Semantic Data Management for the Home, the SOSP 2009 Fabric: A Platform for Secure Distributed Computation and Storage and probably some things about provenance in systems.
  • 9/29 - Randy - Reverse Traceroute (NSDI'10) Basset et al. and the Tiger Claws Mystery.
  • 10/6 - Adam - Netfence: Preventing DOS attacks from Inside Out (SIGCOMM'10)
  • 10/13 - John Kohl - "Living in the Past" (not official title)
    • For most Syschat participants the Internet has effectively always existed. Actually, the "Internet" was first labelled "The Internet" in December, 1974. I had the (accidental) privilege of using the Internet about 20 months earlier. I intend to lead a discussion on a slice of computing 40 years ago.
  • 10/20 - Jessy - OSDI Cloud Storage: Depot and Comet (scheduled but not presented)
  • 10/27 - Octavian - SPORC: Group Collaboration using Untrusted Cloud Resources
  • 11/3 Sebastian - SigComm 2010: Efficient Error Estimating Coding: Feasibility and Applications
  • 11/10 - Abdul - Privacy-Preserving P2P Data Sharing with OneSwarm (sigcomm 2010)
  • 11/17 - No syschat
  • 11/24 - lex - BlueFs (OSDI 2004) and How to tell Airport from Home (HotNets 2010)
  • 12/1 - Randy - The Little Engine(s) that could: Scaling online social networks (SigComm 2010)
  • 12/8 - lex - Contracts: Building Contribution incentives for P2P live streaming (NSDI 2010)
  • 12/14 - Sigcomm Brainstorm Meeting

Spring 2010

  • 2/3 - Aaron - "Non-Intrusive, Dynamic Interference Detection for 802.11 Networks" (IMC09) by Cai et al.
  • 2/10 - [school closed]
  • 2/17 - Vasileios - "Fabric: A Platform for Secure Distributed Computation and Storage" (SOSP 2009) by Liu et al. (Cornell)
  • 2/24 - Dave - Packet Auctions
  • 3/3 - Adam - Accountability and Privacy on the Internet (Job Talk)
  • 3/10 - Canceled
  • 3/17 - [spring break]
  • 3/24 - Kristin
  • 3/31 - Rob
  • 4/7 - Dave Levin - Job Talk
  • 4/14 - Canceled
  • 4/21 - "Maranello: Practical Partial Packet Recovery for 802.11" by Han et al. (NSDI 2010 Practice Talk)
  • 4/28 - TBD
  • 5/5 - TBD

Fall 2009

  • 9/16 - Room 4424 - Neil Spring - LaTeX, BibTeX, and writing style that pleases Neil (and yourself)
  • 9/23 - [canceled]
  • 9/30 - [canceled]
  • 10/7 - Randy - "Bond Breaker" by Baden et al.
  • 10/14 - Aaron - "White Space Networking with Wi-Fi like Connectivity" by Bahl et al.
  • 10/21 - [canceled]
  • 10/28 - Vasileios - "A Policy Framework for the Future Internet" by Seehra et al. and "Pitfalls for ISP-friendly P2P design" by Piatek et al.
  • 11/4 - Bo - "Cross-Layer Wireless Bit Rate Adaptation"
  • 11/11 - (3pm in 3258) Krishna Gummadi - "Glasnost: Enabling End Users to Detect Traffic Differentiation"
  • 11/18 - Adam - "Internet Protocol Made Accountable" by X Yang and X Liu
  • 11/25 - Dave - "An introduction to privacy-preserving targeted advertising" by Levin et al.

Conferences

Spring 2009

Fall 2008

  • 9/16 Cristian - "Taming the Torrent: A practical approach to reducing cross-ISP traffic in P2P systems"
  • 9/23 Aaron - "FatVAP: Aggregating AP Backhaul Capacity to Maximize Throughput"
  • 9/30
  • 10/14
  • 10/21 Randy - Online Social Networks
  • 10/28
  • 11/4 Dave
  • 11/11 Bo
  • 11/18 Larry

Spring 2008

Fall 2007