| Mar 23, 2026 | 🎉 I’m happy to announce that two papers have been accepted at ISC 2026: PICO: Performance Insights for Collective Operations, presents a tool for fine-grained profiling and benchmarking of collective operations (work led by Saverio Pasqualoni) and Characterizing the Impact of Congestion in Modern HPC Interconnects (work led by Lorenzo Piarulli). Saverio and Lorenzo will be presenting their papers at ISC this June in Hamburg. |
| Oct 22, 2025 | 🎉 I’m happy to announce that our paper Flowcut Switching: High-Performance Adaptive Routing with In-Order Delivery Guarantees has been accepted in IEEE Transactions on Networking. |
| Oct 15, 2025 | 🎉 I’m happy to announce that two papers have been accepted at SC 2025 (Bine Trees: Enhancing Collective Operations by Optimizing Communication Locality and Uno: A One-Stop Solution for Inter- and Intra-Data Center Congestion Control and Reliable Connectivity) and one at EuroSys 2026 (REPS: Recycled Entropy Packet Spraying for Adaptive Load Balancing and Failure Mitigation). I am going to present the paper on Bine Trees in a few weeks at SC 2025. The paper introduces new algorithms for collective operations, reducing distance between communicating ranks and improving performance up to 80% on LUMI and MareNostrum5, 50% on Leonardo, and up to 5x on Fugaku. |
| Aug 27, 2024 | 🎉 I’m happy to announce that the paper Exploring GPU-to-GPU Communication: Insights into Supercomputer Interconnects have been accepted at SC ‘24. The paper focuses on GPU-GPU interconnect. We analyzed three top-10 supercomputers, on up to 4k NVIDIA and AMD GPUs, offering valuable insights to architects, researchers, practitioners, and developers. The paper is the outcome of a fruitful collaboration with NVIDIA, Cray HPE, ETH Zurich, CINECA, University of Trento, Vrije Universitiet, and University of Antwerp. You can find a preprint here. |
| May 2, 2024 | 🎉 I’m happy to announce that the paper OSMOSIS: Enabling Multi-Tenancy in Datacenter SmartNICs have been accepted at USENIX ATC ‘24. OSMOSIS is a resource manager for SmartNICs to support multi-tenancy with low overhead. |
| Apr 4, 2024 | 🎉 I’m happy to announce that a new paper have been accepted at HPDC ‘24. The paper introduces a performance model and new algorithms for reduce and allreduce on the Cerebras Wafer-Scale Engine (WSE), a novel architecture optimized for machine learning workloads. The new algorithms outperform the current vendor solutions by more than 3x. |
| Feb 15, 2024 | 👨🏫 In partnership with the University of Trento and CINI, we will host in June a summer school focused on High-Performance Computing (HPC) (https://hpc-summer-school-24.disi.unitn.it/). I’ll be giving two lectures on interconnection networks and the process of writing HPC papers. If you’re interested, feel free to join. |
| Dec 11, 2023 | 🎉 I’m happy to announce that two papers have been accepted at NSDI ‘24. The first one is about a new algorithm for allreduce on multidimensional torus networks that improves performance up to 3x compared to state-of-the-art algorithms (you can find a preprint here). The second one is on the design, implementation, and evaluation of the first-ever Slim Fly network deployment (here). |
| Oct 21, 2023 | 🎉 Our paper “Canary: Congestion-Aware In-Network Allreduce” has been accepted for publication on Future Generation Computer Systems (FGCS). You can find a preprint here. |
| Jul 24, 2023 | 🎉 Our HammingMesh paper, the result of a collaboration between ETH Zurich and Microsoft, has been invited to appear in Communications of ACM (CACM) Research Highlights. |
| Jul 18, 2023 | 😎 New website online! |