Modelling, Design of Heterogenous architectures for embedded Applications

Next level of energy efficiency is an essential concern in the evolution of semiconductor technologies sincethe widespread development of distributed, nomad and embedded systems. The best example is that ofmobile phones the last twenty years but consumer electronics perspectives (IoT, 5G, HPC, ArtificialIntelligence, Robotics, automotive engineering) reinforce the need for further power consumption control.The research carried out for this habilitation defense addresses this question by investigating tools andmethodologies for digital system design focusing on energy constraints and embedded technologies. Inparticular, all the investigations developed over the last fifteen years are part of ambitious collaborativeprojects with representative industrial partners (Intel, Thales, STMicroelectronics, etc.) on different aspectsof energy concerns. Despite the difficulty faced today to proceed with a fundamental study on the long runin a global context of applied research (collaborative projects funded for 3 or 4 years with objectives highlydriven by industrial R&D), it is a deliberate approach aimed at setting the short-term views of projectproposals in a broader scientific horizon which has made it possible to identify and develop original ideason more fundamental questions. These elements of improvement have led to propose a methodologycentered on energy efficiency reflecting a concept of integrated design methodology with case studiesreporting significant improvements on concrete demonstrators.