Keynote
Compositional Verification and Run-time Monitoring for Learning-Enabled Autonomous Systems
Providing safety guarantees for autonomous systems is difficult as these systems operate in complex environments that require the use of learning-enabled components, such as deep neural networks (DNNs) for visual perception. DNNs are hard to analyze due to their size, lack of formal specifications, and sensitivity to small changes in the environment. We present compositional techniques for the formal verification of safety properties of such autonomous systems. The main idea is to abstract the hard-to-analyze components of the autonomous system, such as DNN-based perception and environmental dynamics, with either probabilistic or worst-case abstractions. This makes the system amenable to formal analysis using off-the-shelf model checking tools, enabling the derivation of specifications for the behavior of the abstracted components such that system safety is guaranteed. We also discuss how the derived specifications can be used as run-time monitors deployed on the DNN outputs. We illustrate these ideas in a case study from the autonomous airplane domain.
Corina Pasareanu
Corina Pasareanu is an ACM Fellow and an IEEE ASE Fellow, working at NASA Ames. She is affiliated with KBR and Carnegie Mellon University’s CyLab. Her research interests include model checking, symbolic execution, compositional verification, probabilistic software analysis, autonomy, and security. She is the recipient of several awards, including ETAPS Test of Time Award (2021), ASE Most Influential Paper Award (2018), ESEC/FSE Test of Time Award (2018), ISSTA Retrospective Impact Paper Award (2018), ACM Impact Paper Award (2010), and ICSE 2010 Most Influential Paper Award (2010). She has been serving as Program/General Chair for several conferences including: ICSE 2025, SEFM 2021, FM 2021, ICST 2020, ISSTA 2020, ESEC/FSE 2018, CAV 2015, ISSTA 2014, ASE 2011, and NFM 2009. She is on the steering committees for the ICSE, TACAS and ISSTA conferences. She is currently an associate editor for IEEE TSE and for STTT, Springer Nature.
Queueing Models for Today’s Data Center Jobs
Most queueing models assume that a job runs on a single server. But this one-server-per-job model is not a good representation of today’s compute jobs.
A typical data center job today occupies multiple cores concurrently, often thousands of cores. We refer to a job that concurrently occupies multiple cores as a multiserver job. Unfortunately, very little is known about response time in multiserver job queueing models. We present the first results on response time for multiserver job queueing models. In particular, we propose a new scheduling policy for multiserver jobs, called ServerFilling, and bound its response time.
We also consider today’s parallel speedup jobs, which can run on any number of cores, but whose speed depends on the number of cores on which the job is run. Here it is even more complicated to understand how to best share a limited number of cores among a stream of jobs, each governed by a different speedup function. We discuss some recent optimality results in this nascent area.
Mor Harchol-Balter
Bruce J. Nelson Professor of Computer Science
SIG Chair for ACM SIGMETRICS
Mor Harchol-Balter is the Bruce J. Nelson Professor of Computer Science at Carnegie Mellon. She received her Ph.D. from U.C. Berkeley in 1996 under the direction of Manuel Blum. She joined CMU in 1999, and served as the Head of the PhD program from 2008-2011. She is the SIG Chair for ACM SIGMETRICS. She is a Fellow of both ACM and IEEE, the NSF CAREER award, and several teaching awards, including the Herbert A. Simon Award and Spira Teaching Award. Mor’s work focuses on designing new resource allocation policies, including load balancing policies, power management policies, and scheduling policies, for distributed systems. Mor is heavily involved in the SIGMETRICS / PERFORMANCE research community where she has received many paper awards (INFORMS George Nicholson Prize 22, SIGMETRICS 21, SIGMETRICS 19, PERFORMANCE 18, INFORMS APS 18, EUROSYS 16, MASCOTS 16, MICRO 10, SIGMETRICS 03, ITC 03, SIGMETRICS 96). She is the author of two popular textbooks, both published by Cambridge University Press: Performance Analysis and Design of Computer Systems (2013) and Introduction to Probability for Computing (2024). She is also a recipient of dozens of Industrial Faculty Awards including multiple awards from Google, Microsoft, IBM, EMC, Facebook, Intel, Yahoo!, and Seagate. Mor is best known for her enthusiastic keynote talks and her many PhD students, almost all of whom are professors at top academic institutions.