Conference Publications

1. [CGO-26] GRANII: Selection and Ordering of Primitives in GRAph Neural Networks using Input Inspection
   Damitha Lenadora, Vimarsh Sathia, Gerasimos Gerogiannis, Serif Yesil, Josep Torrellas, and Charith Mendis
   Proceedings of the International Symposium on Code Generation and Optimization (CGO), February 2026.

2. [MICRO-25] NetSparse: In-Network Acceleration of Distributed Sparse Kernels
   Gerasimos Gerogiannis, Dimitrios Merkouriadis, Charles Block, Annus Zulfiqar, Filippos Tofalos, Muhammad Shahbaz, and Josep Torrellas
   Proceedings of the International Symposium on Microarchitecture (MICRO), October 2025.

3. [MICRO-25] DECA: A Near-Core LLM Decompression Accelerator Grounded on a 3D Roofline Model
   Gerasimos Gerogiannis, Stijn Eyerman, Evangelos Georganas, Wim Heirman, and Josep Torrellas
   Proceedings of the International Symposium on Microarchitecture (MICRO), October 2025.

4. [MICRO-25] Micro-MAMA: Multi-Agent Reinforcement Learning for Multicore Prefetching
   Charles Block, Gerasimos Gerogiannis, and Josep Torrellas
   Proceedings of the International Symposium on Microarchitecture (MICRO), October 2025.

5. [ICML-25] COGNATE: Learning-Based Acceleration of Sparse Tensor Programs on Emerging Hardware
   Chamika Sudusinghe, Gerasimos Gerogiannis, Damitha Lenadora, Charles Block, Josep Torrellas, and Charith Mendis
   Proceedings of the International Conference on Machine Learning (ICML), July 2025.

6. [ISCA-25] MeshSlice: Efficient 2D Tensor Parallelism for Distributed DNN Training
   Hyoungwook Nam, Gerasimos Gerogiannis, and Josep Torrellas
   Proceedings of the International Symposium on Computer Architecture (ISCA), June 2025.

7. [SC-24] Distributed-Memory Parallel Algorithms for Sparse Matrix and Sparse Tall-and-Skinny Matrix Multiplication
   Isuru Ranawaka, Md Taufique Hussain, Charles Block, Gerasimos Gerogiannis, Josep Torrellas, and Ariful Azad
   Proceedings of the International Conference for High Performance Computing, Networking, Storage and Analysis (SC), November 2024.

8. [ASPLOS-24] Two-Face: Combining Collective and One-Sided Communication for Efficient Distributed SpMM
   Charles Block*, Gerasimos Gerogiannis*, Charith Mendis, Ariful Azad, and Josep Torrellas
   *Co-first authors, order is alphabetical.
   Proceedings of the International Conference on Architectural Support for Programming Languages and Operating Systems (ASPLOS), April 2024.

9. [HPCA-24] HotTiles: Accelerating SpMM with Heterogeneous Accelerator Architectures
   Gerasimos Gerogiannis, Sriram Aananthakrishnan, Josep Torrellas, and Ibrahim Hur
   Proceedings of the International Symposium on High Performance Computer Architecture (HPCA), March 2024.

10. [MICRO-23] Micro-Armed Bandit: Lightweight & Reusable Reinforcement Learning for Microarchitecture Decision-Making
    Gerasimos Gerogiannis and Josep Torrellas
    Proceedings of the International Symposium on Microarchitecture (MICRO), October 2023.
    Selected as a Top Pick in IEEE Micro Top Picks from Computer Architecture Conferences.

11. [ISCA-23] SPADE: A Flexible and Scalable Accelerator for SpMM and SDDMM
    Gerasimos Gerogiannis, Serif Yesil, Damitha Lenadora, Dingyuan Cao, Charith Mendis, and Josep Torrellas
    Proceedings of the International Symposium on Computer Architecture (ISCA), June 2023.
    Honorable Mention in IEEE Micro Top Picks.

12. [ISPASS-23] Characterizing the Scalability of Graph Convolutional Networks on Intel® PIUMA
    Matthew Adiletta, Jesmin Jahan Tithi, Emmanouil-Ioannis Farsarakis, Gerasimos Gerogiannis, Robert Adolf, Robert Benke, Sidharth Kashyap, Samuel Hsia, Kartik Lakhotia, Fabrizio Petrini, Gu-Yeon Wei, and David Brooks
    Proceedings of the International Symposium on Performance Analysis of Systems and Software (ISPASS), April 2023.

Journal Publications

1. [IEEE-Micro-24] Practical Online Reinforcement Learning for Microprocessors with Micro-Armed Bandit
   Gerasimos Gerogiannis and Josep Torrellas
   IEEE Micro Magazine, Top Picks Special Issue, July–August 2024.

2. [IEEE-Access-22] Deep Reinforcement Learning Acceleration for Real-Time Edge Computing Mixed Integer Programming Problems
   Gerasimos Gerogiannis, Michael Birbas, Aimilios Leftheriotis, Eleftherios Mylonas, Nikolaos Tzanis, and Alexios Birbas
   IEEE Access, January 2022.

Workshop Publications (with proceedings)

1. [ICML-EXAIT-25] Automated Data Selection for Efficient Cost Model Training to Optimize Sparse Matrix Kernels on Emerging Hardware Accelerators
   Chamika Sudusinghe, Gerasimos Gerogiannis, Damitha Lenadora, Charles Block, Josep Torrellas, and Charith Mendis
   Exploration in AI Today Workshop at ICML, 2025.