Skip to Main content Skip to Navigation
Theses

Modélisation, exploration et estimation de la consommation pour les architectures hétérogènes reconfigurables dynamiquement

Robin Bonamy 1
1 CAIRN - Energy Efficient Computing ArchItectures with Embedded Reconfigurable Resources
Inria Rennes – Bretagne Atlantique , IRISA-D3 - ARCHITECTURE
Abstract : The use of reconfigurable accelerators when designing heterogeneous system-on-chip has the potential to increase performance and reduce energy consumption. Indeed, these accelerators are commonly a adjunct to one (or more) processor(s) and unload intensive computations and treatments. The concept of dynamic reconfiguration, supported by some FPGA vendors, allows to consider more flexible systems including the ability to sequence the execution of accelerators on the same silicon area, while reducing resource requirements. However, dynamic reconfiguration may impact overall system performance and it is hard to estimate the impact of configuration decisions on energy consumption.. The main objective of this thesis is to provide an exploration methodology to assess the impact of implementation choices of tasks of an application on a system-on-chip containing a dynamically reconfigurable resource, to optimize the energy consumption or the processing time. Therefore, we have established consumption models of reconfigurable components, particularly FPGAs, which assists the designer. Using a measurement methodology on Virtex-5, we first show the possibility to generate hardware accelerators of various sizes, execution time and energy consumption. Then, in order to quantify the implementation costs of these accelerators, we build three power models of the dynamic and partial reconfiguration. Finally, from these models, we develop an algorithm for the exploration of implementation and allocation possibilities for a complete system. Based on a high-level modeling platform, the implementation costs of the tasks and their performance on various resources (CPU or reconfigurable region) are analyzed. The solutions with the best characteristics, based on design constraints, are extracted.
Document type :
Theses
Complete list of metadatas

Cited literature [85 references]  Display  Hide  Download

https://tel.archives-ouvertes.fr/tel-00931849
Contributor : Abes Star :  Contact
Submitted on : Saturday, May 17, 2014 - 10:02:08 AM
Last modification on : Friday, July 10, 2020 - 4:05:35 PM
Long-term archiving on: : Monday, April 10, 2017 - 11:31:21 PM

File

BONAMY_Robin.pdf
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-00931849, version 2

Citation

Robin Bonamy. Modélisation, exploration et estimation de la consommation pour les architectures hétérogènes reconfigurables dynamiquement. Autre. Université Rennes 1, 2013. Français. ⟨NNT : 2013REN1S061⟩. ⟨tel-00931849v2⟩

Share

Metrics

Record views

561

Files downloads

720