Tue 16 Jun 2015 09:15 - 09:40 at PLDI Main RED (Portland 256) - Synthesis I Chair(s): Kathleen Fisher

Software-defined networking (SDN) is revolutionizing the networking industry, but current SDN programming platforms do not provide automated mechanisms for updating global configurations on the fly. Implementing updates by hand is challenging for SDN programmers because networks are distributed systems with hundreds or thousands of interacting nodes. Even if initial and final configurations are correct, naively updating individual nodes can lead to incorrect transient behaviors, including loops, black holes, access control violations, and others. This paper presents an approach for automatically synthesizing updates that are guaranteed to preserve specified properties. We formalize network updates as a distributed programming problem and develop a synthesis algorithm that uses counterexample-guided search and incremental model checking to dramatically improve performance. We describe our prototype implementation, and present results from experiments on real-world topologies and properties demonstrating that our tool scales to updates involving thousands of nodes in a few seconds.

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Tue 16 Jun

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09:15 - 10:55
Synthesis IResearch Papers at PLDI Main RED (Portland 256)
Chair(s): Kathleen Fisher Tufts University
09:15
25m
Talk
Efficient Synthesis of Network Updates
Research Papers
Jedidiah McClurg University of Colorado Boulder, Hossein Hojjat Cornell University, Pavol Cerny University of Colorado Boulder, Nate Foster Cornell University
Pre-print Media Attached
09:40
25m
Talk
Efficient Synthesis of Probabilistic Programs
Research Papers
Aditya Nori Microsoft Research, UK, Sherjil Ozair IIT Delhi, Sriram Rajamani Microsoft Research, Deepak Vijaykeerthy Microsoft Research
Media Attached
10:05
25m
Talk
FlashRelate: Extracting Relational Data from Semi-Structured Spreadsheets Using Examples
Research Papers
Dan Barowy University of Massachusetts Amherst, Sumit Gulwani Microsoft Research, Ted Hart Microsoft Research, Benjamin Zorn Microsoft Research
Media Attached
10:30
25m
Talk
Synthesizing Data Structure Transformations from Input-Output Examples
Research Papers
John Feser Rice University, Swarat Chaudhuri Rice University, Isil Dillig University of Texas, Austin
Media Attached