Interests

I am drawn to problems that touch on control systems, decentralization, and usable and practical systems, which taken together have led me to networking. I enjoy systems thinking and the problems that come along with it. Outside of systems, I am very interested in computer science education and pedagogy.

News

• Sep 14, 2024:Our paper on validating inputs to SDN controllers will appear in HotNets '24
• Aug 15, 2024:dSDN patent 1 and patent 2 published
• Aug 02, 2024:Our paper on A Decentralized SDN Architecture appears at SIGCOMM '24

Publications

• TURBO: Bandwidth Allocation for Cloud-Augmented Autonomous Driving
  Peter Schafhalter*, Alexander Krentsel*, Joseph E Gonzalez, Sylvia Ratnasamy, Scott Shenker, Ion Stoica.
  [ Arxiv| Under Submission, Conference paper]
  

• Managing Bandwidth: The Key to Cloud-Assisted Autonomous Driving
  Alexander Krentsel*, Peter Schafhalter*, Joseph E Gonzalez, Sylvia Ratnasamy, Scott Shenker, Ion Stoica.
  [ Arxiv ]

• The Case for Validating Inputs in Software-Defined WANs
  Alexander Krentsel, Rishabh Iyer, Isaac Keslassy, Sylvia Ratnasamy, Rob Shakir, Anees Shaikh.
  HotNets 2024, Irvine, CA
  [ Paper| Slides| Conference Program ]

• A Decentralized SDN Architecture for the WAN
  Alexander Krentsel, Nitika Saran, Bikash Koley, Subhasree Mandal, Ashok Narayanan, Sylvia Ratnasamy, Ali Al-Shabibi, Anees Shaikh, Rob Shakir, Ankit Singla, Hakim Weatherspoon.
  SIGCOMM 2024, Sydney, Australia
  [ Paper| Slides| Poster| Patent 1| Patent 2| Conference Program ]

• The Sky is the Limit: Cloud-Assisted Autonomous Driving via Service Tiers
  Alexander Krentsel, Peter Schafhalter, Joseph E Gonzalez, Sylvia Ratnasamy, Scott Shenker, Ion Stoica.
  Compound AI Systems Workshop, Databricks Data + AI Summit 2024
  [ Extended Abstract| Poster| Workshop Program ]

Talks

• The Case for Validating SDN Inputs [ Slides ]

  • Oct 31, 2024 - UC Berkeley, Berkeley, CA
  • Nov 12, 2024 - Google, Sunnyvale, CA
  • Nov 19, 2024 - HotNets Conference, UC Irvine, CA

• Grad School 101: What, Why, and How [ Slides ]

  • Oct 16, 2024 - Berkeley, CA

• Decentralizing the SDN WAN Control Plane [ Slides ]

  • Jul 30, 2024 - Google, Sunnyvale, CA
  • Aug 8, 2024 - SIGCOMM Conference, Sydney, Australia
  • Aug 12, 2024 - KAIST, Daejeon, South Korea
  • Nov 4, 2024 - University of Houston, TX
  • Nov 20, 2024 - SF Systems Meetup, San Francisco, CA

• From Google to Berkeley PhD, Systems Research, and Teaching [ Recording ]

  • May 2024 - Thinking about Computers Podcast, Berkeley, CA

• Lessons Learned from a 10-Year Cal Journey [ Slides ]

  • Apr 20, 2024 - UC Berkeley, Berkeley, CA

• How to Write Letters of Recommendation [ Slides ]

  • Dec 22, 2022 - Googler-in-Residence Summit, Washington, DC
  • Oct 9, 2023 - Googler-in-Residence Summit, San Francisco, CA
  • Aug 19, 2024 - Google, Sunnyvale, CA

• Ethics Questions are Everywhere in Computer Science [ Slides ]

  • Nov 3, 2022 - Fisk University, Nashville, TN

Teaching

• Su '23: Lecturer, AddisCoder: Accelerated Intro to CS, Ethiopia [ Materials (Week 2) ]
• Fa '22: Head TA, CS168: Internet Architecture, UC Berkeley
• Fa '21: Lecturer, CSCI100: Intro to Computer Science, Howard University [ Syllabus | Videos | Slides ]
• Sp '21: TA, CS106A Online: Code-in-Place, Stanford
• Sp '20: TA, CS106A Online: Code-in-Place, Stanford
• Sp '19: TA, CS189/CS289: Machine Learning, UC Berkeley
• Fa '18: TA, CS168: Internet Architecture, UC Berkeley
• Sp '18: TA, CS61B: Data Structures and Algorithms, UC Berkeley [ New Project Designed ]
• Sp '17: TA, EE16A: Introduction to Electrical Engineering, UC Berkeley
• Fa '16: TA, EE16A: Introduction to Electrical Engineering, UC Berkeley