Nicolas Gac

Laboratory

Signals and Systems Laboratory

Website

Summary

L2S webpage: https://l2s.centralesupelec.fr/u/gac-nicolas/ After a M.Sc. (2003) and a Ph.D. (2008) degrees, both in signal processing, from the Institut National Polytechnique de Grenoble, I joined in 2009 the L2S (Laboratory of Signal and Systems), Paris-Saclay, where I am currently associate professor at University of Paris-Sud. I am teaching computer science for embedded systems at IUT de Cachan. At the Inverse Problems Group, my research interest is focused on algorithm-architecture co-design applied mainly for tomography reconstruction and radio astronomy on multi-GPU servers or FPGA boards.

Publications (105)

Conference poster 08/12/2025

SimSDP, a Rapid Prototyping tool for Radio Astronomy: From NenuFAR Experiments to SKAO-Scale Simulation

Ophelia Renaud , Cédric Dumez-Viou , Nicolas Gac , François Orieux

Communication at a conference 15/11/2025

Scalable Hydrodynamics on multiple Field-Programmable Gate Arrays (FPGAs)

François-Xavier Mordant , Charles Prouveur , Pascal Tremblin , Nicolas Gac

Communication at a conference 15/11/2025

Scalable Hydrodynamics on multiple Field-Programmable Gate Arrays (FPGAs)

François-Xavier Mordant , Charles Prouveur , Pascal Tremblin , Nicolas Gac

Communication at a conference 01/04/2025

A practical HW-aware NAS flow for AI vision applications on embedded heterogeneous SoCs

Agathe Archet , Nicolas Ventroux , Nicolas Gac , François Orieux

Communication at a conference 01/01/2025

Extending Rapid Prototyping for Radio Astronomical Imaging Pipelines: Advanced Multi-Node HPC Simulation

Ophelia Renaud , Sunrise Wang , Nicolas Gac , François Orieux

Communication at a conference 01/01/2025

Dark-era: Dataflow Algorithm aRchitecture co-design of SKA pipeline for Exascale Radio Astronomy

Ophelia Renaud , Nicolas Gac

Communication at a conference 01/01/2025

SimSDP, a Rapid Prototyping tool for Radio Astronomy: From NenuFAR Experiments to SKAO-Scale Simulation

Ophelia Renaud , Cédric Dumez-Viou , Nicolas Gac , François Orieux

Communication at a conference 01/01/2025

Extending Rapid Prototyping for Radio Astronomical Imaging Pipelines: Advanced Multi-Node HPC Simulation

Ophelia Renaud , Sunrise Wang , Nicolas Gac , François Orieux

Communication at a conference 01/01/2025

SimSDP, a Rapid Prototyping tool for Radio Astronomy: From NenuFAR Experiments to SKAO-Scale Simulation

Ophelia Renaud , Cédric Dumez-Viou , Nicolas Gac , François Orieux

Communication at a conference 22/06/2024

An Initial Framework for Prototyping the Radio-Interferometric Imaging Pipelines

Sunrise Wang , Hugo Miomandre , Jean-François Nezan , Karol Desnos , Nicolas Gac , François Orieux

Communication at a conference 10/06/2024

ANR Dark-era Project: Algorithm Architecture Adequacy (A3) for radio astronomy

Nicolas Gac

Article in a journal 03/11/2023

Fast Grid to Grid Interpolation for Radio Interferometric Imaging

Nicolas Monnier , Cyril Tasse , Erwan Raffin , David Guibert , François Orieux , Nicolas Gac

Communication at a conference 06/09/2023

Energy-efficient use of an embedded heterogeneous SoC for the inference of CNNs

Agathe Archet , Nicolas Ventroux , Nicolas Gac , François Orieux

Communication at a conference 28/08/2023

Exploration of neural network architectures for semantic segmentation of aerial images

Agathe Archet , Nicolas Ventroux , François Orieux , Nicolas Gac

Communication at a conference 12/06/2023

Embedded AI performance of Nvidia's Jetson Orin SoC series

Agathe Archet , Nicolas Ventroux , Nicolas Gac , François Orieux

Article in a journal 17/03/2023

X-ray tomography reconstruction accelerated on FPGA through High-Level Synthesis tools

Daouda Diakite , Nicolas Gac

Chapter of the book 05/01/2023

Rapid prototyping of a supercomputer dedicated to radio astronomy

Jean-François Nezan , André Ferrari , Chiara Ferrari , Martin Quinson , Cédric Dumez-Viou , Nicolas Gac

Software 01/12/2022

TomoGPI - GPU/FPGA acceleration of tomographic reconstruction codes

Daouda Diakite , Mohammad-Djafari Ali , Nicolas Gac

Article in a journal 01/12/2022

Computing Large 2D Convolutions on GPU Efficiently with the im2tensor Algorithm

Mickael Seznec , Alvin Sashala Naik , Nicolas Gac , François Orieux

Communication at a conference 02/11/2022

Multi-core multi-node parallelization of the radio interferometric imaging pipeline DDFacet

Nicolas Monnier , David Guibert , Cyril Tasse , François F. Orieux , Erwan Raffin , Oleg M Smirnov , Benjamin V Hugo , Nicolas Gac , François Orieux

Communication at a conference 18/10/2022

Fast Sky to Sky Interpolation for Radio Interferometric Imaging

Nicolas Monnier , Cyril Tasse , Erwan Raffin , David Guibert , François Orieux , Nicolas Gac

Conference poster 16/10/2022

Fast Sky to Sky Interpolation for Radio Interferometric Imaging

Nicolas Monnier , Cyril Tasse , Erwan Raffin , David Guibert , François Orieux , Nicolas Gac

Conference poster 07/10/2022

Nicolas Monnier , Nicolas Gac , François Orieux

Communication at a conference 06/09/2022

First results of comparison of oneAPI and OpenCL tools for 2D convolution on FPGA

Daouda Diakite , Nicolas Gac

Communication at a conference 06/09/2022

MobileFlow: Model and Implementation for Efficient Optical Flow Inference

Mickael Seznec , Agathe Archet , Alvin Sashala Naik , Nicolas Gac , François Orieux

Communication at a conference 06/09/2022

Fast Sky-to-Sky Interpolation for Interferometric Radio Imaging

Nicolas Monnier , François F. Orieux , David Guibert , Cyril Tasse , Erwan Raffin , François Orieux , Nicolas Gac

Communication at a conference 27/06/2022

FPGA implementation of 2D Convolution using OneAPI and OpenCL

Daouda Diakite , Nicolas Gac

Article in a journal 01/04/2022

Real-Time Optical Flow Processing on Embedded GPU: a Hardware-Aware Algorithm to Implementation Strategy

Mickael Seznec , Alvin Sashala Naik , Nicolas Gac , François Orieux

Communication at a conference 30/08/2021

OpenCL FPGA Optimization guided by memory accesses and roofline model analysis applied to tomography acceleration

Daouda Diakite , Maxime Martelli , Nicolas Gac

Conference poster 24/06/2021

Dataflow Algorithm aRchitecture co-design of SKA pipeline for Exascale Radio Astronomy

Daniel Charlet , Karol Desnos , Mickaël Dardaillon , André Ferrari , Chiara Ferrari , Jean Francois Nezan , Simon Prunet , Martin Quinson , Frédéric Suter , Cyril Tasse , Cédric Dumez-Viou , Nicolas Gac , François Orieux