Publications

Finding Nemo-Nemo: CFT DAG-based Consensus in the WANTo appear

Middleware 2026 · Rithwik Kerur, Pasindu Tennage, Philipp Jovanovic, Dahlia Malkhi, Alberto Sonnino, Igor Zablotchi

• arXiv

Tidehunter: Large-Value Storage With Minimal Data Relocation

VLDB 2026 · Andrey Chursin, Lefteris Kokoris-Kogias, Alex Orlov, Alberto Sonnino, Igor Zablotchi

• Paper

Remora: Scale-out Deterministic Execution for Smart Contracts

VLDB 2026 · Zhengqing Liu, Alberto Sonnino, Igor Zablotchi, Eleftherios Kokoris Kogias, Marios Kogias

• Paper

Byzantine Consensus in the Random Asynchronous Model

DISC 2025 · George Danezis, Jovan Komatovic, Lefteris Kokoris-Kogias, Alberto Sonnino, Igor Zablotchi

• Paper

Mahi-Mahi: Low-Latency Asynchronous BFT DAG-Based Consensus

ICDCS 2025 · Philipp Jovanovic, Lefteris Kokoris-Kogias, Bryan Kumara, Alberto Sonnino, Pasindu Tennage, Igor Zablotchi

• arXiv

Pilotfish: Distributed Execution for Scalable Blockchains

FC 2025 · Quentin Kniep, Lefteris Kokoris-Kogias, Alberto Sonnino, Igor Zablotchi, Nuda Zhang

• Paper
• arXiv

Partial Synchrony for Free: New Upper Bounds for Byzantine Agreement

SODA 2025 · Pierre Civit, Muhammad Ayaz Dzulfikar, Seth Gilbert, Rachid Guerraoui, Jovan Komatovic, Manuel Vidigueira, Igor Zablotchi

• Paper
• arXiv

Efficient Signature-Free Validated Agreement

DISC 2024 · Pierre Civit, Muhammad Ayaz Dzulfikar, Seth Gilbert, Rachid Guerraoui, Jovan Komatovic, Manuel Vidigueira, Igor Zablotchi

• Paper

SWARM: Replicating Shared Disaggregated-Memory Data in No Time

SOSP 2024 · Antoine Murat, Clément Burgelin, Athanasios Xygkis, Igor Zablotchi, Marcos K. Aguilera, Rachid Guerraoui

• Paper
• arXiv

DSig: Breaking the Barrier of Signatures in Data CentersArtifact award

OSDI 2024 · Marcos K. Aguilera, Clément Burgelin, Rachid Guerraoui, Antoine Murat, Athanasios Xygkis, Igor Zablotchi

• Paper
• arXiv

Parallel k-Core Decomposition with Batched Updates and Asynchronous Reads

PPoPP 2024 · Quanquan C. Liu, Julian Shun, Igor Zablotchi

• Paper
• Full version

uBFT: Microsecond-scale BFT using Disaggregated Memory

ASPLOS 2023 · Marcos K. Aguilera, Naama Ben-David, Rachid Guerraoui, Antoine Murat, Athanasios Xygkis, Igor Zablotchi

• Paper
• arXiv

Frugal Byzantine Computing

DISC 2021 · Marcos K. Aguilera, Naama Ben-David, Rachid Guerraoui, Dalia Papuc, Athanasios Xygkis, Igor Zablotchi

• Paper
• arXiv
• Talk

Leaderless ConsensusBest paper

ICDCS 2021 · Karolos Antoniadis, Antoine Desjardins, Vincent Gramoli, Rachid Guerraoui, Igor Zablotchi

• Paper
• Talk

Microsecond Consensus for Microsecond Applications

OSDI 2020 · Marcos K. Aguilera, Naama Ben-David, Rachid Guerraoui, Virendra J. Marathe, Athanasios Xygkis, Igor Zablotchi

• Paper
• Full version
• Slides
• Talk
• Code

Efficient Multi-word Compare and Swap

DISC 2020 · Rachid Guerraoui, Alex Kogan, Virendra J. Marathe, Igor Zablotchi

• Paper
• Full version
• Talk

The Impact of RDMA on Agreement

PODC 2019 · Marcos K. Aguilera, Naama Ben-David, Rachid Guerraoui, Virendra J. Marathe, Igor Zablotchi

• Paper
• Full version

Log-Free Concurrent Data Structures

USENIX ATC 2018 · Tudor David, Aleksandar Dragojević, Rachid Guerraoui, Igor Zablotchi

• Paper
• Poster

The Inherent Cost of Remembering Consistently

SPAA 2018 · Nachshon Cohen, Rachid Guerraoui, Igor Zablotchi

• Paper

FloDB: Unlocking Memory in Persistent Key-Value Stores

EuroSys 2017 · Oana Balmau, Rachid Guerraoui, Vasileios Trigonakis, Igor Zablotchi

• Paper
• Poster

The Disclosure Power of Shared Objects

NETYS 2017 (short paper) · Peva Blanchard, Rachid Guerraoui, Julien Stainer, Igor Zablotchi

• Paper
• Full version

Fast and Robust Memory Reclamation for Concurrent Data Structures

SPAA 2016 · Oana Balmau, Rachid Guerraoui, Maurice Herlihy, Igor Zablotchi

• Paper
• Full version

Honeycomb: Ordered Key-Value Store Acceleration on an FPGA-Based SmartNIC

IEEE Transactions on Computers 2024 · Junyi Liu, Aleksandar Dragojević, Shane T. Fleming, Antonios Katsarakis, Dario Korolija, Igor Zablotchi, Ho-Cheung Ng, Anuj Kalia, Miguel Castro

• Paper

Leaderless Consensus

Journal of Parallel and Distributed Computing 2023 · Karolos Antoniadis, Julien Benhaim, Antoine Desjardins, Poroma Elias, Vincent Gramoli, Rachid Guerraoui, Gauthier Voron, Igor Zablotchi

• Paper

Microsecond Consensus for Microsecond Applications

Two Sigma, December 2020 · OSDI 2020

Efficient Multi-word Compare and Swap

DISC 2020

RDMA & Distributed Systems: A Principled Approach

IBM Research Zurich, January 2019

The Inherent Cost of Remembering Consistently

SPAA 2018

Fast and Robust Memory Reclamation for Concurrent Data Structures

SPAA 2016

Log-Free Concurrent Data Structures

USENIX ATC 2018

FloDB: Unlocking Memory in Persistent Key-Value Stores

EuroSys 2017