Rachid Guerraoui
Full Professor
rachid.guerraoui@epfl.ch +41 21 693 52 72 https://dcl.epfl.ch/rachid/
Citizenship: Morroccan & Swiss & French
EPFL IC IINFCOM DCL
INR 310 (Bâtiment INR)
Station 14
1015 Lausanne
Web site: Web site: https://dcl.epfl.ch/
Web site: Web site: https://ssc.epfl.ch
Web site: Web site: https://sin.epfl.ch
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
2025
Stabl: The Sensitivity of Blockchains to Failures
2025. 26th International Middleware Conference (Middleware 2025), Vanderbilt University Nashville TN USA, 2025-12-15 - 2025-12-19. p. 202 - 214. DOI : 10.1145/3721462.3730952.ARGO: Overcoming hardware dependence in distributed learning
Future Generation Computer Systems. 2025. DOI : 10.1016/j.future.2025.107778.Evaluating Blockchain Fault Tolerance with Stabl
2025. 2025 55th Annual IEEE/IFIP International Conference on Dependable Systems and Networks - Supplemental Volume (DSN-S), Naples, Italy, 2025-06-23 - 2025-06-26. p. 182 - 183. DOI : 10.1109/dsn-s65789.2025.00062.Repeated Agreement is Cheap! On Weak Accountability and Multishot Byzantine Agreement
2025. 44th ACM SIGACT-SIGOPS Symposium on Principles of Distributed Computing (PODC 2025), Santa María Huatulco, Mexico, 2025-06-16 - 2025-06-20. p. 15 - 27. DOI : 10.1145/3732772.3733520.Efficient Federated Search for Retrieval-Augmented Generation
2025. 5th Workshop on Machine Learning and Systems (EuroMLSys), Rotterdam, The Netherlands, 2025-03-31. DOI : 10.1145/3721146.3721942.Optimal Byzantine Agreement with Little Cryptography
Lausanne, EPFL, 2025. DOI : 10.5075/epfl-thesis-10539.The Utility and Complexity of In- and Out-of-Distribution Machine Unlearning
2025. 13th International Conference on Learning Representations (ICLR 2025), Singapore, 2025-04-24 - 2025-04-28.Privacy and Robustness in Federated Learning: From Theoretical Insights to Practical Implementation
Lausanne, EPFL, 2025. DOI : 10.5075/epfl-thesis-10503.The Cost of Trust in Machine Learning: Privacy, Robustness, Unlearning, and their Interactions
Lausanne, EPFL, 2025. DOI : 10.5075/epfl-thesis-11375.The Tight Cost of Byzantine Agreement
Lausanne, EPFL, 2025. DOI : 10.5075/epfl-thesis-10879.Partial Synchrony for Free: New Upper Bounds for Byzantine Agreement
2025. 2025 ACM-SIAM Symposium on Discrete Algorithms, New Orleans, Louisiana, US, 2025-01-12 - 2025-01-15. DOI : 10.1137/1.9781611978322.144.Robust and Efficient Collaborative Learning
Lausanne, EPFL, 2025. DOI : 10.5075/epfl-thesis-10889.2024
Towards Practical Homomorphic Aggregation in Byzantine-Resilient Distributed Learning
2024. 25 ACM International Middleware Conference, Hong Kong, Hong Kong, 2024-12-02 - 2024-12-06. p. 431 - 444. DOI : 10.1145/3652892.3700783.Accelerating Transfer Learning with Near-Data Computation on Cloud Object Stores
2024. 15th ACM Symposium on Cloud Computing, Redmond, WA, USA, 2024-11-20 - 2024-11-22. p. 995 - 1011. DOI : 10.1145/3698038.3698549.Revisiting Ensembling in One-Shot Federated Learning
2024. 38th Annual Conference on Neural Information Processing Systems, Vancouver Convention Center, 2024-12-10 - 2024-12-15.SWARM: Replicating Shared Disaggregated-Memory Data in No Time
2024. SOSP '24 ACM SIGOPS 30th Symposium on Operating Systems Principles, Austin, Texas, USA, 2024-11-04 - 2024-11-06. p. 24 - 45. DOI : 10.1145/3694715.3695945.Efficient Signature-Free Validated Agreement
2024. 38 International Symposium on Distributed Computing, Madrid, Spain, 2024-10-28 - 2024-11-01. DOI : 10.4230/LIPIcs.DISC.2024.14.PeerSwap: A Peer-Sampler with Randomness Guarantees
2024. The 43rd International Symposium on Reliable Distributed Systems, Charlotte, USA, 2024-09-30 - 2024-10-03.DSig: Breaking the Barrier of Signatures in Data Centers
2024. OSDI '24 - 18th USENIX Symposium on Operating Systems Design and Implementation, Santa Clara, California, USA, 2024-07-10 - 2024-07-12.Chop Chop: Byzantine Atomic Broadcast to the Network Limit
2024. 18th USENIX Symposium on Operating Systems Design and Implementation (OSDI'24), Santa Clara, CA, 2024-07-10 - 2024-07-12.All Byzantine Agreement Problems Are Expensive
2024. 43rd ACM Symposium on Principles of Distributed Computing, Nantes, France, 2024-06-17 - 2024-06-21. p. 157 - 169. DOI : 10.1145/3662158.3662780.Brief Announcement: A Case for Byzantine Machine Learning
2024. 43rd ACM Symposium on Principles of Distributed Computing, Nantes, France, 2024-06-17 - 2024-06-21. DOI : 10.1145/3662158.3662802.DARE to Agree: Byzantine Agreement With Optimal Resilience and Adaptive Communication
2024. 43rd ACM Symposium on Principles of Distributed Computing, Nantes, France, 2024-06-17 - 2024-06-21. p. 145 - 156. DOI : 10.1145/3662158.3662792.Robust Sparse Voting
2024. International Conference on Artificial Intelligence and Statistics (AISTATS), Valencia, Spain, 2024.Adversarial Evasion on LLMs
Large Language Models in Cybersecurity: Threats, Exposure and Mitigation; Springer Nature, 2024. p. 181 - 188.Robustness of gossip-based protocols
Lausanne, EPFL, 2024. DOI : 10.5075/epfl-thesis-10508.Byzantine-Robust Federated Learning: Impact of Client Subsampling and Local Updates
2024. 41st International Conference on Machine Learning (ICML) 2024, Vienna, Austria, 2024-07-21 - 2024-07-24.Robust and Private Federated Learning on LLMs
Large Language Models in Cybersecurity: Threats, Exposure and Mitigation; Chams (Switzerland): Springer Nature, 2024. p. 189 - 196.Fine-Tuning Personalization in Federated Learning to Mitigate Adversarial Clients
2024. 38th Conference on Neural Information Processing Systems (NeurIPS 2024), Vancouver, Canada, 2024-12-10 - 2024-12-15.The Privacy Power of Correlated Noise in Decentralized Learning
2024. 41st International Conference on Machine Learning (ICML 2024), Vienna, Austria, July 21-27, 2024. DOI : 10.48550/arXiv.2405.01031.Rapidly verifiable aggregate signatures
WO2024062304 ; EP4343599 . 2024.Planetary-Scale Byzantine Fault Tolerance
Lausanne, EPFL, 2024. DOI : 10.5075/epfl-thesis-9000.Carbon: Scaling Trusted Payments with Untrusted Machines
IEEE Transactions on Dependable and Secure Computing. 2024. DOI : 10.1109/TDSC.2024.3428617.Robust Machine Learning - Distributed Methods for Safe AI
Singapore: Springer, 2024.2023
Epidemic Learning: Boosting Decentralized Learning with Randomized Communication
2023. 37th Conference on Neural Information Processing Systems (NeurIPS 2023), New Orleans, Louisiana, USA, December 10-16, 2023.Byzantine consensus is Θ(n^2): the Dolev-Reischuk bound is tight even in partial synchrony!
Distributed Computing. 2023. DOI : 10.1007/s00446-023-00458-w.Robust Distributed Learning: Tight Error Bounds and Breakdown Point under Data Heterogeneity
2023. Thirty-seventh Conference on Neural Information Processing Systems, New Orleans, LA, USA, December 10-16, 2023.GoldFinger: Fast & Approximate Jaccard for Efficient KNN Graph Constructions
Ieee Transactions On Knowledge And Data Engineering. 2023. DOI : 10.1109/TKDE.2022.3232689.As easy as ABC: Optimal (A)ccountable (B)yzantine (C)onsensus is easy!
Journal Of Parallel And Distributed Computing. 2023. DOI : 10.1016/j.jpdc.2023.104743.Efficacy of temporal and spatial abstraction for training accurate machine learning models: A case study in smart thermostats
Energy And Buildings. 2023. DOI : 10.1016/j.enbuild.2023.113377.PePTM: An Efficient and Accurate Personalized P2P Learning Algorithm for Home Thermal Modeling
Energies. 2023. DOI : 10.3390/en16186594.Byzantine Machine Learning: A Primer
Acm Computing Surveys. 2023. DOI : 10.1145/3616537.Robust Collaborative Learning with Linear Gradient Overhead
2023. International Conference on Machine Learning, Honolulu, Hawaii, USA, July 23-29, 2023. p. 9761 - 9813.Leaderless consensus
Journal Of Parallel And Distributed Computing. 2023. DOI : 10.1016/j.jpdc.2023.01.009.Reliable Microsecond-Scale Distributed Computing
Lausanne, EPFL, 2023. DOI : 10.5075/epfl-thesis-9909.On the Privacy-Robustness-Utility Trilemma in Distributed Learning
Proceedings of the 40th International Conference on Machine Learning - Hawaii. 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.DIABLO: A Benchmark Suite for Blockchains
2023. 18th European Conference on Computer Systems (EuroSys), Rome, ITALY, May 08-12, 2023. p. 540 - 556. DOI : 10.1145/3552326.3567482.Fixing by Mixing: A Recipe for Optimal Byzantine ML under Heterogeneity
2023.On the Strategyproofness of the Geometric Median
2023. 26th International Conference on Artificial Intelligence and Statistics (AISTATS), Valencia, Spain, April 25-27, 2023.On the Validity of Consensus
2023. 42nd ACM SIGACT-SIGOPS Symposium on Principles of Distributed Computing (PODC), Orlando, FL, JUN 19-23, 2023. p. 332 - 343. DOI : 10.1145/3583668.3594567.Efficient and Accurate Peer-to-Peer Training of Machine Learning Based Home Thermal Models
2023. 14th ACM International Conference on Future Energy Systems (e-Energy), Orlando, FL, JUN 20-23, 2023. p. 524 - 529. DOI : 10.1145/3575813.3597453.2022
Byzantine-Resilient Multi-Agent System
Ieee Transactions On Dependable And Secure Computing. 2022. DOI : 10.1109/TDSC.2021.3116488.FLEET: Online Federated Learning via Staleness Awareness and Performance Prediction
Acm Transactions On Intelligent Systems And Technology. 2022. DOI : 10.1145/3527621.Byzantine Machine Learning Made Easy By Resilient Averaging of Momentums
2022. 38th 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. 38th 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. 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.The Universal Gossip Fighter
2022. 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. DOI : 10.1007/s00446-022-00427-9.Diablo-v2: A Benchmark for Blockchain Systems
2022The consensus number of a cryptocurrency (vol 35, pg 1, 2022)
Distributed Computing. 2022. DOI : 10.1007/s00446-022-00422-0.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.Practical Byzantine-resilient Stochastic Gradient Descent
Lausanne, EPFL, 2022. DOI : 10.5075/epfl-thesis-8999.The consensus number of a cryptocurrency (extended version)
Distributed Computing. 2022. DOI : 10.1007/s00446-021-00399-2.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.The Road to a Universal Internet Machine
2022. 21st IEEE International Symposium on Parallel and Distributed Computing (ISPDC), Basel, SWITZERLAND, Jul 11-13, 2022. p. XIX - XIX.System Support for Robust Distributed Learning
Lausanne, EPFL, 2022. DOI : 10.5075/epfl-thesis-8995.G-Fake: Tell Me How It is Shared and I Shall Tell You If It is Fake
2022. 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.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.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.2022.13.2021
Collaborative Learning in the Jungle (Decentralized, Byzantine, Heterogeneous, Asynchronous and Nonconvex Learning)
2021. 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. DOI : 10.1016/j.jpdc.2021.07.017.GARFIELD: System Support for Byzantine Machine Learning (Regular Paper)
2021. 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.Diablo: A Distributed Analytical Blockchain Benchmark Framework Focusing on Real-World Workloads
2021The Imitation Game: Algorithm Selection by Exploiting Black-Box Recommenders
2021. 8th International Conference (NETYS 2020), Marrakech, Morocco, June 3–5, 2020. p. 170 - 182. DOI : 10.1007/978-3-030-67087-0_11.Leaderless Consensus
2021Distributed Momentum for Byzantine-resilient Stochastic Gradient Descent
2021. 9th International Conference on Learning Representations (ICLR), virtual conference, May 4-8, 2021.Leaderless Consensus
2021. 41st IEEE International Conference on Distributed Computing Systems (ICDCS), ELECTR NETWORK, Jul 07-10, 2021. p. 392 - 402. DOI : 10.1109/ICDCS51616.2021.00045.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.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.Differential Privacy and Byzantine Resilience in SGD: Do They Add Up?
2021. 40th ACM SIGACT-SIGOPS Symposium on Principles of Distributed Computing (PODC), ELECTR NETWORK, Jul 26-30, 2021. p. 391 - 401. DOI : 10.1145/3465084.3467919.2020
FeGAN: Scaling Distributed GANs
2020. 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. 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. 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. DOI : 10.1109/TDSC.2018.2845402.Genuinely Distributed Byzantine Machine Learning
2020. The ACM Symposium on Principles of Distributed Computing (PODC), Salerno, Italy, August 3–7, 2020. DOI : 10.1145/3382734.3405695.Distributed Computing with Modern Shared Memory
Lausanne, EPFL, 2020. DOI : 10.5075/epfl-thesis-7141.Robust Distributed Learning
Lausanne, EPFL, 2020. DOI : 10.5075/epfl-thesis-7218.Smaller, Faster & Lighter KNN Graph Constructions
2020. The Web Conference 2020, April 2020. p. 1060 - 1070. DOI : 10.1145/3366423.3380184.Private and Secure Distributed Learning
Lausanne, EPFL, 2020. DOI : 10.5075/epfl-thesis-7096.The Impossibility of Fast Transactions
2020. 34th IEEE International Parallel and Distributed Processing Symposium (IPDPS), ELECTR NETWORK, May 18-22, 2020. p. 1143 - 1154. DOI : 10.1109/IPDPS47924.2020.00120.Byzantine machine learning
WO2020011361 . 2020.Microsecond Consensus for Microsecond Applications
2020. 14th USENIX Symposium on Operating Systems Design and Implementation (OSDI), ELECTR NETWORK, Nov 04-06, 2020. p. 599 - 616.Robust P2P Personalized Learning
2020. 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.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.Thread-Placement Learning
2020. 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.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.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.Teaching & PhD
Teaching
Communication Systems
Computer Science