Rachid Guerraoui
EPFL IC IINFCOM DCL
INR 310 (Bâtiment INR)
Station 14
CH-1015 Lausanne
+41 21 693 52 72
+41 21 693 64 59
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Fields of expertise
Distributed algorithms, secure distributed storage, transactional shared memory and distributed programming languages
Biography
Rachid Guerraoui has been affiliated with Ecole des Mines of Paris, the Commissariat à l'Energie Atomique of Saclay, Hewlett Packard Laboratories and the Massachusetts Institute of Technology. He has worked in a variety of aspects of distributed computing, including distributed algorithms and distributed programming languages. He is most well known for his work on (e-)Transactions, epidemic information dissemination and indulgent algorithms. He co-authored a book on Transactional Systems (Hermes) and a book on reliable distributed programming (Springer). He was appointed program chair of ECOOP 1999, ACM Middleware 2001, IEEE SRDS 2002, DISC 2004 and ACM PODC 2010. His publications are available at http://lpdwww.epfl.ch/rachid/papers/generalPublis.htmlCurrent work
Rachid Guerraoui's current projects include secure distributed storage, transactional shared memory and the computability of distributed algorithms. His recent research has been sponsored by the European Commission, the Swiss National Science Foundation, LODH, MSR and HP.Publications
Infoscience publications
Infoscience
On the Strategyproofness of the Geometric Median
2023. 26th International Conference on Artificial Intelligence and Statistics (AISTATS), Valencia, Spain, April 25-27, 2023.Fixing by Mixing: A Recipe for Optimal Byzantine ML under Heterogeneity
2023.uKharon: A Membership Service for Microsecond Applications
2023. 2022 USENIX Annual Technical Conference (USENIX ATC '22), Carlsbad, CA, USA, July 11–13, 2022.uBFT: Microsecond-Scale BFT using Disaggregated Memory
2023. 28th ACM International Conference on Architectural Support for Programming Languages and Operating Systems (ASPLOS 2023), Vancouver, BC, Canada, March 25–29, 2023. p. 862-877. DOI : 10.1145/3575693.3575732.Byzantine-Resilient Multi-Agent System
Ieee Transactions On Dependable And Secure Computing. 2022-11-01. DOI : 10.1109/TDSC.2021.3116488.FLEET: Online Federated Learning via Staleness Awareness and Performance Prediction
Acm Transactions On Intelligent Systems And Technology. 2022-10-01. DOI : 10.1145/3527621.Byzantine Machine Learning Made Easy By Resilient Averaging of Momentums
2022-07-17. 39th International Conference on Machine Learning (ICML 2022), Baltimore, Maryland, USA, July 17-23, 2022. p. 6246-6283.An Equivalence Between Data Poisoning and Byzantine Gradient Attacks
2022-07-17. 39th International Conference on Machine Learning (ICML 2022), Baltimore, Maryland, USA, July 17-23, 2022. p. 6284–6323.On the advantages of P2P ML on mobile devices
2022-06-28. 13th ACM International Conference on Future Energy Systems (e-Energy '22), Virtual Event , 28 June - 1 July, 2022. p. 338-353. DOI : 10.1145/3538637.3538863.Removing algorithmic discrimination (with minimal individual error)
Theoretical Computer Science. 2022-06-26. DOI : 10.1016/j.tcs.2022.04.051.The Universal Gossip Fighter
2022-05-30. 36th IEEE International Parallel & Distributed Processing Symposium (IPDPS 2022), Online, May 30 – June 3, 2022. p. 1162-1172. DOI : 10.1109/IPDPS53621.2022.00116.Genuinely distributed Byzantine machine learning
Distributed Computing. 2022-05-26. DOI : 10.1007/s00446-022-00427-9.Removing Algorithmic Discrimination (With Minimal Individual Error)
Theoretical Computer Science. 2022-05-19. DOI : 10.1016/j.tcs.2022.04.051.The consensus number of a cryptocurrency (vol 35, pg 1, 2022)
Distributed Computing. 2022-02-23. DOI : 10.1007/s00446-022-00422-0.G-Fake: Tell Me How It is Shared and I Shall Tell You If It is Fake
2022-01-01. 14th Asian Conference on Intelligent Information and Database Systems (ACIIDS), Ho Chi Minh City, VIETNAM, Nov 28-30, 2022. p. 1-13. DOI : 10.1007/978-981-19-8234-7_1.The Road to a Universal Internet Machine
2022-01-01. 21st IEEE International Symposium on Parallel and Distributed Computing (ISPDC), Basel, SWITZERLAND, Jul 11-13, 2022. p. XIX-XIX.Oracular Byzantine Reliable Broadcast
2022. 36th International Symposium on Distributed Computing (DISC 2022), Augusta, Georgia, USA, October 25-27, 2022. DOI : 10.4230/lipics.disc.2022.13.Byzantine Consensus is Θ(n^2): The Dolev-Reischuk Bound is Tight even in Partial Synchrony!
2022. 36th International Symposium on Distributed Computing (DISC 2022), Augusta, Georgia, USA, October 25-27, 2022. p. 1:11-1:19.Crime and Punishment in Distributed Byzantine Decision Tasks
2022. 42nd IEEE International Conference on Distributed Computing Systems (ICDCS), Bologna, Italy, July 10-13, 2022. p. 34-44. DOI : 10.1109/ICDCS54860.2022.00013.Revisiting Tendermint: Design Tradeoffs, Accountability, and Practical Use
2022. 2022 52nd Annual IEEE/IFIP International Conference on Dependable Systems and Networks - Supplemental Volume (DSN-S), Baltimore, MD, USA, June 27-30, 2022. p. 11-14. DOI : 10.1109/DSN-S54099.2022.00014.As easy as ABC: Optimal (A)ccountable (B)yzantine (C)onsensus is easy!
2022. 2022 IEEE International Parallel and Distributed Processing Symposium (IPDPS), Lyon, France, 30 May - 03 June, 2022. p. 560-570. DOI : 10.1109/IPDPS53621.2022.00061.The consensus number of a cryptocurrency (extended version)
Distributed Computing. 2022. DOI : 10.1007/s00446-021-00399-2.Collaborative Learning in the Jungle (Decentralized, Byzantine, Heterogeneous, Asynchronous and Nonconvex Learning)
2021-12-06. 35th Conference on Neural Information Processing Systems (NeurIPS 2021), Virtual, December 6-14, 2021.Probabilistic and temporal failure detectors for solving distributed problems
Journal Of Parallel And Distributed Computing. 2021-12-01. DOI : 10.1016/j.jpdc.2021.07.017.GARFIELD: System Support for Byzantine Machine Learning (Regular Paper)
2021-06-21. 2021 51st Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN), Taipei, Taiwan, June 21-24, 2021. p. 39-51. DOI : 10.1109/DSN48987.2021.00021.The Imitation Game: Algorithm Selection by Exploiting Black-Box Recommenders
2021-01-14. 8th International Conference (NETYS 2020), Marrakech, Morocco, June 3–5, 2020. p. 170-182. DOI : 10.1007/978-3-030-67087-0_11.Dynamic Byzantine Reliable Broadcast
2021. 24th International Conference on Principles of Distributed Systems (OPODIS 2020), Strasbourg, France (Virtual Conference), Decembre 14-16, 2020. DOI : 10.4230/lipics.opodis.2020.23.AKSEL: Fast Byzantine SGD
2021. 24th International Conference on Principles of Distributed Systems (OPODIS 2020), Strasbourg, France (Virtual Conference), Decembre 14-16, 2020. DOI : 10.4230/lipics.opodis.2020.8.Differential Privacy and Byzantine Resilience in SGD: Do They Add Up?
2021-01-01. 40th ACM SIGACT-SIGOPS Symposium on Principles of Distributed Computing (PODC), ELECTR NETWORK, Jul 26-30, 2021. p. 391-401. DOI : 10.1145/3465084.3467919.Leaderless Consensus
2021-01-01. 41st IEEE International Conference on Distributed Computing Systems (ICDCS), ELECTR NETWORK, Jul 07-10, 2021. p. 392-402. DOI : 10.1109/ICDCS51616.2021.00045.Distributed Momentum for Byzantine-resilient Stochastic Gradient Descent
2021. 9th International Conference on Learning Representations (ICLR), virtual conference, May 4-8, 2021.Differentially Private Stochastic Coordinate Descent
2021. 35th AAAI Conference on Artificial Intelligence / 33rd Conference on Innovative Applications of Artificial Intelligence / 11th Symposium on Educational Advances in Artificial Intelligence, Virtual Conference, February 2–9, 2021. p. 7176-7184. DOI : 10.1609/aaai.v35i8.16882.FeGAN: Scaling Distributed GANs
2020-12-10. 21st International Middleware Conference, Delft, Netherlands, December 7-11, 2020. p. 193-206. DOI : 10.1145/3423211.3425688.Efficient Multi-Word Compare and Swap
2020-10-07. 34th International Symposium on Distributed Computing (DISC 2020), October 12-16, 2020. DOI : 10.4230/LIPIcs.DISC.2020.4.Fast and Robust Distributed Learning in High Dimension
2020-09-21. IEEE 39th International Symposium on Reliable Distributed Systems (SRDS 2020), Shanghai, China, September 21-24, 2020. p. 71-80. DOI : 10.1109/SRDS51746.2020.00015.The Cost of Scaling a Reliable Interconnection Topology
Ieee Transactions On Dependable And Secure Computing. 2020-09-01. DOI : 10.1109/TDSC.2018.2845402.Genuinely Distributed Byzantine Machine Learning
2020-08-03. The ACM Symposium on Principles of Distributed Computing (PODC), Salerno, Italy, August 3–7, 2020. DOI : 10.1145/3382734.3405695.Microsecond Consensus for Microsecond Applications
2020-01-01. 14th USENIX Symposium on Operating Systems Design and Implementation (OSDI), ELECTR NETWORK, Nov 04-06, 2020. p. 599-616.Thread-Placement Learning
2020-01-01. 40th IEEE International Conference on Distributed Computing Systems (ICDCS), ELECTR NETWORK, Nov 29-Dec 01, 2020. p. 877-887. DOI : 10.1109/ICDCS47774.2020.00050.The Impossibility of Fast Transactions
2020-01-01. 34th IEEE International Parallel and Distributed Processing Symposium (IPDPS), ELECTR NETWORK, May 18-22, 2020. p. 1143-1154. DOI : 10.1109/IPDPS47924.2020.00120.Robust P2P Personalized Learning
2020-01-01. 39th International Symposium on Reliable Distributed Systems (SRDS), Shanghai, PEOPLES R CHINA, Sep 21-24, 2020. p. 299-308. DOI : 10.1109/SRDS51746.2020.00037.FLeet: Online Federated Learning via Staleness Awareness and Performance Prediction
2020. Middleware '20: 21st International Middleware Conference, Delft, Netherlands (online), December, 2020. p. 163-177. DOI : 10.1145/3423211.3425685.Online Payments by Merely Broadcasting Messages
2020. 50th Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN), Valencia, Spain, June 29th, July 2nd 2020. DOI : 10.1109/DSN48063.2020.00023.Who Started This Rumor? Quantifying the Natural Differential Privacy of Gossip Protocols
2020. 34th International Symposium on Distributed Computing (DISC 2020), October 15, 2020. DOI : 10.4230/lipics.disc.2020.8.Smaller, Faster & Lighter KNN Graph Constructions
2020. The Web Conference 2020, April 2020. p. 1060-1070. DOI : 10.1145/3366423.3380184.Byzantine machine learning
WO2020011361 . 2020.The weakest failure detector for eventual consistency
Distributed Computing. 2019-12-01. DOI : 10.1007/s00446-016-0292-9.Exploring The Borderlands Of The Gathering Problem
Bulletin of The European Association for Theoretical Computer Science. 2019-10-01.AGGREGATHOR: Byzantine Machine Learning via Robust Gradient Aggregation
2019-04-01. The Conference on Systems and Machine Learning (SysML), 2019, Stanford, CA, USA, March 31 - April 2, 2019 .Lock-Unlock: Is That All? A Pragmatic Analysis of Locking in Software Systems
Acm Transactions On Computer Systems. 2019-03-01. DOI : 10.1145/3301501.The Consensus Number of a Cryptocurrency
2019-01-01. 38th ACM Symposium on Principles of Distributed Computing (PODC), Toronto, CANADA, Jul 29-Aug 02, 2019. p. 307-316. DOI : 10.1145/3293611.3331589.Scalable Byzantine Reliable Broadcast
2019. 33rd International Symposium on Distributed Computing (DISC 2019), Budapest, Hungary, October 14-18, 2019. p. 22:1-22:16. DOI : 10.4230/LIPIcs.DISC.2019.22.The Impact of RDMA on Agreement
2019. PODC '19: ACM Symposium on Principles of Distributed Computing, Toronto, Canada, July, 2019. p. 409-418. DOI : 10.1145/3293611.3331601.The Fake News Vaccine
2019. 7th International Conference on Networked Systems. NETYS 2019, Marrakech, Morocco, June 19–21, 2019. p. 347-364. DOI : 10.1007/978-3-030-31277-0_23.Unified and Scalable Incremental Recommenders with Consumed Item Packs
2019. Euro-Par 2019 : European Conference on Parallel Processing, Göttingen, Germany, August 26–30, 2019. p. 227-240. DOI : 10.1007/978-3-030-29400-7_17.Utility and privacy effects of a user action in a communication system
EP3435314 . 2019.Byzantine tolerant gradient descent for distributed machine learning with adversaries
US2020380340 ; WO2019105543 . 2019.Distributed Transactional Systems Cannot Be Fast
2019. The 31st ACM on Symposium on Parallelism in Algorithms and Architectures - SPAA '19, Phoenix, AZ, USA, June 22 - 24, 2019. p. 369-380. DOI : 10.1145/3323165.3323189.Fingerprinting Big Data: The Case of KNN Graph Construction
2019. 2019 IEEE 35th International Conference on Data Engineering (ICDE), Macao, Macao, Macao, April 8-11 2019. p. 1738-1741. DOI : 10.1109/ICDE.2019.00186.The PCL Theorem: Transactions cannot be Parallel, Consistent, and Live
Journal Of The Acm. 2019-01-01. DOI : 10.1145/3266141.Causal Consistency and Latency Optimality: Friend or Foe?
Proceedings Of The Vldb Endowment. 2018-07-01. DOI : 10.14778/3236187.3236210.Monotonic Prefix Consistency in Distributed Systems
2018-05-30. 38th IFIP WG 6.1 International Conference on Formal Techniques for Distributed Objects, Components, and Systems, Madrid, Spain, June 18-20, 2018. DOI : 10.1007/978-3-319-92612-4_3.Personalized and Private Peer-to-Peer Machine Learning
2018-04-09. AISTATS.SPADE: Tuning scale-out OLTP on modern RDMA clusters
2018. 19th International Middleware Conference on - Middleware '18, Rennes, France, December, 2018. p. 80-93. DOI : 10.1145/3274808.3274815.Log-Free Concurrent Data Structures
2018-01-01. USENIX Annual Technical Conference (ATC), Boston, MA, Jul 11-13, 2018. p. 373-385.Collaborative Filtering Under a Sybil Attack: Similarity Metrics do Matter!
2018-01-01. 48th Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN), Luxembourg City, LUXEMBOURG, Jun 25-28, 2018. p. 466-477. DOI : 10.1109/DSN.2018.00055.Asynchronous Byzantine Machine Learning (the case of SGD)
2018. 35th International Conference on Machine Learning, Stockholm, SWEDEN, July 10-15, 2018. p. 1145-1154.Passing Messages while Sharing Memory
2018-01-01. 37th ACM SIGACT-SIGOPS Symposium on Principles of Distributed Computing (PODC), Egham, ENGLAND, Jul 23-27, 2018. p. 51-60. DOI : 10.1145/3212734.3212741.Locking Timestamps versus Locking Objects
2018-01-01. 37th ACM SIGACT-SIGOPS Symposium on Principles of Distributed Computing (PODC), Egham, ENGLAND, Jul 23-27, 2018. p. 367-376. DOI : 10.1145/3212734.3212742.On the Unfairness of Blockchain
2018. NETYS 2018, Essaouira, Morocco, May 9, 2018 - May 11, 2018. p. 36-50. DOI : 10.1007/978-3-030-05529-5_3.The entropy of a distributed computation random number generation from memory interleaving
DISTRIBUTED COMPUTING. 2018. DOI : 10.1007/s00446-017-0311-5.TM 2 C: a software transactional memory for many-cores
Distributed Computing. 2018. DOI : 10.1007/s00446-017-0310-6.Deep Learning Works in Practice. But Does it Work in Theory?
ArXiv. 2018.The Hidden Vulnerability of Distributed Learning in Byzantium
2018. International Conference on Machine Learning, Stockholm, Sweden, July 10-15, 2018.The Inherent Cost of Remembering Consistently
2018. 30th ACM Symposium on Parallelism in Algorithms and Architectures, Vienna, Austria, July 16 - 18, 2018. p. 259–269. DOI : 10.1145/3210377.3210400.Log-Free Concurrent Data Structures
2018. 2018 USENIX Annual Technical Conference, BOSTON, MA, USA, JULY 11–13, 2018.The Utility and Privacy Effects of a Click
2017-08-07. SIGIR, Shinjuku, Tokyo, Japan, August 7-11, 2017. p. 665–674. DOI : 10.1145/3077136.3080783.TRIAD: creating synergies between memory, disk and log in log structured key-value stores
2017-07-12. USENIX ATC, Santa Clara, CA, USA, July 12-14, 2017.FloDB: Unlocking Memory in Persistent Key-Value Stores
2017-04-23. EuroSys, Belgrade, Serbia, April 23-26, 2017. DOI : 10.1145/3064176.3064193.Why You Can't Beat Blockchains: Consistency and High Availability in Distributed Systems
2017ESTIMA: Extrapolating ScalabiliTy of In-Memory Applications
ACM Transactions on Parallel Computing. 2017. DOI : 10.1145/3108137.On The Robustness of a Neural Network
2017. 36th IEEE International Symposium on Reliable Distributed Systems, Hong Kong, September 26-29, 2017.Sequential Proximity: Towards Provably Scalable Concurrent Search Algorithms
2017. Networked Systems: 5th International Conference, Marrakech, Morocco, May 17-19, 2017. p. 405-420. DOI : 10.1007/978-3-319-59647-1_30.On verifying causal consistency
2017. 44th ACM SIGPLAN Symposium on Principles of Programming Languages (POPL 2017), Paris, France, January, 15-21, 2017. p. 626-638. DOI : 10.1145/3009837.3009888.Dynamic Safe Interruptibility for Decentralized Multi-Agent Reinforcement Learning
2017Heterogeneous Recommendations: What You Might Like To Read After Watching Interstellar
2017. PVLDB, Munich, Germany, August 28 - 31, 2017. p. 1070-1081. DOI : 10.14778/3115404.3115412.The Disclosure Power of Shared Objects
2017. NETYS 2017, Marrakech, Morocco, May 17-19, 2017. DOI : 10.1007/978-3-319-59647-1_17.Capturing the Moment: Lightweight Similarity Computations
2017. 2017 IEEE 33rd International Conference on Data Engineering (ICDE), San Diego, CA, USA, 19-22 April 2017. p. 747-758. DOI : 10.1109/ICDE.2017.126.Brief Announcement: Byzantine-Tolerant Machine Learning
2017. Principles Of Distributed Computing, Washington D.C, USA, July, 2017. DOI : 10.1145/3087801.3087861.How Fast can a Distributed Transaction Commit?
2017. the 36th ACM SIGMOD-SIGACT-SIGAI Symposium, Chicago, Illinois, USA, May 14-19, 2017. p. 107-122. DOI : 10.1145/3034786.3034799.Abstracting Multi-Core Topologies with MCTOP
2017. Twelfth European Conference on Computer Systems (EuroSys '17), Belgrade, Serbia, April 23-26, 2017. p. 544-559. DOI : 10.1145/3064176.3064194.Elastic transactions
Journal Of Parallel And Distributed Computing. 2017. DOI : 10.1016/j.jpdc.2016.10.010.ProteusTM: Abstraction Meets Performance in Transactional Memory
2016-04-02. 21th ACM International Conference on Architectural Support for Programming Languages and Operating Systems (ASPLOS), Atlanta, GA, April 2–6, 2016. DOI : 10.1145/10.1145/2872362.2872385.Collision-Free Pattern Formation
2016. OPODIS 2016.WHO'S ON BOARD? Probabilistic Membership for Real-Time Distributed Control Systems
2016. 35th IEEE International Symposium on Reliable Distributed Systems Workshops (SRDSW), Budapest, HUNGARY, SEP 26-29, 2016. p. 167-176. DOI : 10.1109/Srds.2016.27.Never Say Never Probabilistic & Temporal Failure Detectors
2016. 30th IEEE International Parallel and Distributed Processing Symposium (IPDPS), Illinois Inst Technol, Chicago, IL, MAY 23-27, 2016. p. 679-688. DOI : 10.1109/Ipdps.2016.92.Optimal Fair Computation
2016. 30th International Symposium on Distributed Computing, DISC 2016, Paris, France, September 27-29, 2016. p. 143-157. DOI : 10.1007/978-3-662-53426-7_11.Trade-offs in Replicated Systems
IEEE Data Engineering Bulletin. 2016.Frugal Topology Construction for Stream Aggregation in the Cloud
2016. 35th Annual IEEE International Conference on Computer Communications, San Francisco, CA, USA. DOI : 10.1109/INFOCOM.2016.7524534.Fast and Robust Memory Reclamation for Concurrent Data Structures
2016. 28th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA '16), Pacific Grove, California, USA, July 11 - 13, 2016. DOI : 10.1145/2935764.2935790.Teaching & PhD
Teaching
Communication Systems
Computer Science
PhD Students
Allouah Youssef, Camaioni Martina, Farhadkhani Sadegh, Komatovic Jovan, Kucherenko Anastasiia, Monti Matteo, Murat Antoine, Petrescu Diana Andreea, Ribeiro Vidigueira Manuel José, Stephan John, Xygkis Athanasios,Past EPFL PhD Students
Alistarh Dan , Antoniadis Karolos , Banabic Radu , Boichat Romain , Bushkov Victor , Bähni Sébastien , Chatzopoulos Georgios , Damaskinos Georgios , David Tudor Alexandru , Doudou Assia , Dragojevic Aleksandar , Dutta Partha , El Mhamdi El Mahdi , Eugster Patrick , Guirguis Arsany Hany Abdelmessih , Handurukande Sidath , Kapalka Michal , Knezevic Nikola , Kouznetsov Petr , Kozhaya David , Letia Mihai , Levy Ron , Losa Giuliano , Monod Maxime , Patra Rhicheek , Pavlovic Matej , Pochon Bastian , Rouault Sébastien Louis Alexandre , Seredinschi Dragos-Adrian , Spring Jesper Honig , Taziki Mahsa , Trigonakis Vasileios , Vukolic Marko , Wang Jingjing , Yabandeh Maysam , Zablotchi Mihail Igor ,Courses
Distributed algorithms
Computing is nowadays distributed over several machines, in a local IP-like network, a cloud or a P2P network. Failures are common and computations need to proceed despite partial failures of machines or communication links. This course will study the foundations of reliable distributed computing.
Concurrent algorithms
With the advent of multiprocessors, it becomes crucial to master the underlying algorithmics of concurrency. The objective of this course is to study the foundations of concurrent algorithms and in particular the techniques that enable the construction of robust such algorithms.