2025

IISWC
Regular-ALPHA-PIM: Analysis of Linear Algebraic Processing for High-Performance Graph Applications on a Real Processing-In-Memory System
Marzieh Barkhordar, Alireza Tabatabaeian, Mohammad Sadrosadati, Christina Giannoula, Juan Gomez Luna, Izzat El Hajj, Onur Mutlu, Alaa Alameldeen
Proceedings of the 2025 IEEE International Symposium on Workload Characterization (IISWC)
Irvine, USA, October 2025

SAMOS
Evaluating Microarchitectural Hardware Fault Detection for Application-Specific Requirements
Konstantinos-Nikolaos Papadopoulos, Christina Giannoula, Nikolaos-Charalampos Papadopoulos, Nektarios Koziris, José M.G. Merayo, Dionisios Pnevmatikatos
Proceedings of the 25th International Conference on Embedded Computer Systems: Architectures, Modeling and Simulation (SAMOS)
Samos, Greece, June 2025

SIGMETRICS
PyGim: An Efficient Graph Neural Network Library for Real Processing-In-Memory Architectures
Christina Giannoula, Peiming Yang, Ivan Fernandez Vega, Jiacheng Yang, Sankeerth Durvasula, Yu Xin Li, Mohammad Sadrosadati, Juan Gomez Luna, Onur Mutlu, Gennady Pekhimenko
Proceedings of the ACM International Conference on Measurement and Modeling of Computer Systems (SIGMETRICS)
Stony Brook, New York, USA, June 2025
Extended Abstract
Slides (pptx) (pdf)
Source Code

MLSys
Seesaw: High-throughput LLM Inference via Model Re-Sharding
Qidong Su, Wei Zhao, Xin Li, Muralidhar Andoorveedu, Chenhao Jiang, Zhanda Zhu, Kevin Song, Christina Giannoula, Gennady Pekhimenko
Proceedings of the 8th Annual Conference on Machine Learning and Systems (MLSys)
Santa Clara, USA, May 2025
Slides (pdf)
Officially artifact evaluated as available and functional.
Outstanding Paper Honorable Mention at MLSys 2025!

IEEE CAL
DPWatch: A Framework For Hardware-Based Differential Privacy Guarantees
Pawan Kumar Sanjaya, Christina Giannoula, Ian Colbert, Ihab Amer, Mehdi Saeedi, Gabor Sines, Nandita Vijaykumar
IEEE Computer Architecture Letters (CAL) 2025

ASPLOS
PAPI: Exploiting Dynamic Parallelism in LLM Decoding with a PIM-enabled Computing System
Yintao He, Haiyu Mao, Christina Giannoula, Mohammad Sadrosadati, Juan Gomez Luna, Huawei Li, Xiaowei Li, Ying Wang, Onur Mutlu
Proceedings of the 30th International Conference on Architectural Support for Programming Languages and Operating Systems (ASPLOS)
Rotterdam, Netherlands, April 2025
Slides (pptx)(pdf)

ASPLOS
ARC: Warp-level Adaptive Atomic Reduction in GPUs to Accelerate Differentiable Rendering
Sankeerth Durvasula, Adrian Zhao, Fan Chen, Ruofan Liang, Pawan Kumar Sanjaya, Yushi Guan, Christina Giannoula, Nandita Vijaykumar
Proceedings of the 30th International Conference on Architectural Support for Programming Languages and Operating Systems (ASPLOS)
Rotterdam, Netherlands, April 2025
Source Code
Officially artifact evaluated as available and functional.

EuroSys
Mist: Efficient Distributed Training of Large Language Models via Memory-Parallelism Co-Optimization
Zhanda Zhu, Christina Giannoula, Muralidhar Andoorveedu, Qidong Su, Karttikeya Mangalam, Bojian Zheng, Gennady Pekhimenko
Proceedings of the 20th European Conference on Computer Systems (EuroSys)
Rotterdam, Netherlands, April 2025
Source Code
Officially artifact evaluated as available, functional and reproducible.

2024

ACSSC
Every Bit Matters: A Hardware/Software Approach for Enabling More Powerful Machine Learning Models
Enrique Torres Sanchez, Milos Nikolic, Kareem Ibrahim, Alberto Delmas Lascorz, Ali Hadi Zadeh, Jiahui Wang, Ameer Abdelhadi, Mostafa Mahmoud, Christina Giannoula, Andreas Moshovos
Proceedings of the Asilomar Conference on Signals, Systems, and Computers (ACSSC)
Pacific Grove, USA, October 2024

IISWC
Regular-Low-Bitwidth Floating Point Quantization for Efficient and High-Quality Diffusion Models
Cheng Chen, Christina Giannoula, Andreas Moshovos
Proceedings of the 2024 IEEE International Symposium on Workload Characterization (IISWC)
Vancouver, Canada, September 2024
Slides (pdf)

ICS
Sylva: Sparse Embedded Adapters via Hierarchical Approximate Second-Order Information
Baorun Mu, Christina Giannoula, Shang Wang, Gennady Pekhimenko
Proceedings of the 38th International Conference on Supercomputing (ICS)
Kyoto, Japan, June 2024
Source Code

MLSys
Proteus: Preserving Model Confidentiality during Graph Optimizations
Yubo Gao, Maryam Haghifam, Christina Giannoula, Renbo Tu, Gennady Pekhimenko, Nandita Vijaykumar
Proceedings of the 7th Annual Conference on Machine Learning and Systems (MLSys)
Santa Clara, USA, May 2024
Source Code

ASPLOS
Atalanta: A Bit is Worth a “Thousand” Tensor Values
Alberto Delmas Lascorz, Mostafa Mahmoud, Ali Hadi Zadeh, Milos Nikolic, Kareem Ibrahim, Christina Giannoula, Ameer Abdelhadi, Andreas Moshovos
Proceedings of the 29th International Conference on Architectural Support for Programming Languages and Operating Systems (ASPLOS)
San Diego, USA, April 2024
Slides (pptx)(pdf)
Short Talk Slides (pptx)(pdf)
Lightning Talk Video

ASPLOS
Marple: Scalable Spike Sorting for Untethered Brain-Machine Interfacing
Eugene Sha, Andy Liu, Kareem Ibrahim, Mostafa Mahmoud, Christina Giannoula, Ameer Abdelhadi, Andreas Moshovos
Proceedings of the 29th International Conference on Architectural Support for Programming Languages and Operating Systems (ASPLOS)
San Diego, USA, April 2024

IEEE Access
MATSA: An MRAM-based Energy-Efficient Accelerator for Time Series Analysis
Ivan Fernandez, Christina Giannoula*, Aditya Manglik*, Ricardo Quislant, Nika Mansouri Ghiasi, Juan Gómez-Luna, Eladio Gutierrez, Oscar Plata, Onur Mutlu
*Equal Contribution
IEEE Access, March 2024

EuroSys
Minuet: Accelerating 3D Sparse Convolutions on GPUs
Jiacheng Yang, Christina Giannoula, Jun Wu, Mostafa Elhoushi, James Gleeson, Gennady Pekhimenko
Proceedings of the 19th European Conference on Computer Systems (EuroSys)
Athens, Greece, April 2024
Source Code
Officially artifact evaluated as available, functional and reproducible.

2023

SIGMETRICS
DaeMon: Architectural Support for Efficient Data Movement in Fully Disaggregated Systems
Christina Giannoula, Kailong Huang, Jonathan Tang, Nectarios Koziris, Georgios Goumas, Zeshan Chishti, Nandita Vijaykumar
Proceedings of the ACM International Conference on Measurement and Modeling of Computer Systems (SIGMETRICS)
Orlando, USA, June 2023
Extended Abstract
Slides (pptx) (pdf)
Short Talk Slides (pptx) (pdf)
Full Talk Video
Invited Talk Video at HMC Workshop 2023

2022

PhD Thesis
Accelerating Irregular Applications via Efficient Synchronization and Data Access Techniques
Christina Giannoula
National Technical University of Athens, Greece, October 2022
Slides (pptx) (pdf)
Live Seminar Video (with Q&A)
Iakovos Giurunlian Award - Best Doctoral Thesis with Industrial Interest!

JSC
High-Performance and Balanced Parallel Graph Coloring on Multicore Platforms
Christina Giannoula, Athanasios Peppas, Georgios Goumas, Nectarios Koziris
Journal of Supercomputing (JSC), November 2022
Source Code

SIGMETRICS
SparseP: Towards Efficient Sparse Matrix Vector Multiplication on Real Processing-In-Memory Architectures
Christina Giannoula, Ivan Fernandez, Juan Gómez-Luna, Nectarios Koziris, Georgios Goumas, Onur Mutlu
Proceedings of the ACM International Conference on Measurement and Modeling of Computer Systems (SIGMETRICS)
Mumbai, India, June 2022
Extended Abstract
Slides (pptx) (pdf)
Short Talk Slides (pptx) (pdf)
Full Talk Video
Lecture Video
Source Code

IEEE Access
Benchmarking a New Paradigm: Experimental Analysis and Characterization of a Real Processing-in-Memory System
Juan Gómez-Luna, Izzat El Hajj, Ivan Fernandez, Christina Giannoula, Geraldo F. Oliveira, Onur Mutlu
IEEE Access, May 2022
ArXiv Version
Slides (pptx) (pdf)
Source Code

2021

CUT
Benchmarking Memory-Centric Computing Systems: Analysis of Real Processing-in-Memory Hardware
Juan Gómez-Luna, Izzat El Hajj, Ivan Fernandez, Christina Giannoula, Geraldo F. Oliveira, Onur Mutlu
Invited Paper at Workshop on Computing with Unconventional Technologies (CUT)
Virtual, October 2021
ArXiv Version
Slides (pptx) (pdf)
Source Code

HPCA
SynCron: Efficient Synchronization Support for Near-Data-Processing Architectures
Christina Giannoula, Nandita Vijaykumar, Nikela Papadopoulou, Vasileios Karakostas, Ivan Fernandez, Juan Gómez-Luna, Lois Orosa, Nectarios Koziris, Georgios Goumas, Onur Mutlu
Proceedings of the 27th International Symposium on High-Performance Computer Architecture (HPCA)
Virtual, February 2021
Slides (pptx) (pdf)
Short Talk Slides (pptx) (pdf)
Full Talk Video
Short Talk Video
Live Seminar Video (with Q&A)
Processing-In-Memory Course Lecture Video
Cutting-Edge Research Lecture Video
HiPEAC Awards 2021

2020

ICCD
NATSA: A Near-Data Processing Accelerator for Time Series Analysis
Ivan Fernandez, Ricardo Quislant, Christina Giannoula, Mohammed Alser, Juan Gómez-Luna, Eladio Gutiérrez, Oscar Plata, Onur Mutlu
Proceedings of the 38th IEEE International Conference on Computer Design (ICCD)
Virtual, October 2020
Slides (pptx) (pdf)
Source Code

2019

MICRO
SMASH: Co-designing Software Compression and Hardware-Accelerated Indexing for Efficient Sparse Matrix Operations
Konstantinos Kanellopoulos, Nandita Vijaykumar, Christina Giannoula, Roknoddin Azizi, Skanda Koppula, Nika Mansouri Ghiasi, Taha Shahroodi, Juan Gómez-Luna, Onur Mutlu
Proceedings of the 52nd International Symposium on Microarchitecture (MICRO)
Columbus, USA, October 2019
Slides (pptx) (pdf)
Lightning Talk Slides (pptx) (pdf)
Poster (pptx) (pdf)
Source Code
HiPEAC Awards 2019

CF
An Adaptive Concurrent Priority Queue for NUMA Architectures
Foteini Strati*, Christina Giannoula*, Dimitrios Siakavaras, Georgios Goumas, Nectarios Koziris
*Equal Contribution
Proceedings of the 16th ACM International Conference on Computing Frontiers (CF)
Alghero, Sardinia, Italy, April 2019

2018

SRC PACT
Employing Hardware Transactional Memory to Design a Balanced Graph Coloring Algorithm
Christina Giannoula, Georgios Goumas, Nectarios Koziris
Short Paper at the Student Research Competition (SRC) of the 27th International Conference on Parallel Architectures and Compilation Techniques (PACT)
Limassol, Cyprus, November 2018
SRC PACT 2018 Lighting Talk Video
2nd Place Winner at ACM Student Research Competition (SRC)!

ISC HPC
Combining HTM with RCU to Speed up Graph Coloring on Multicore Platforms
Christina Giannoula, Georgios Goumas, Nectarios Koziris
Proceedings of the 2018 ISC High Performance (ISC HPC)
Frankfurt, Germany, June 2018