Skip to Main content Skip to Navigation
New interface
Theses

Développement d’algorithmes d’imagerie et de reconstruction sur architectures à unités de traitements parallèles pour des applications en contrôle non destructif

Abstract : This thesis work is placed between the scientific domain of ultrasound non-destructive testing and algorithm-architecture adequation. Ultrasound non-destructive testing includes a group of analysis techniques used in science and industry to evaluate the properties of a material, component, or system without causing damage. In order to characterize possible defects, determining their position, size and shape, imaging and reconstruction tools have been developed at CEA-LIST, within the CIVA software platform.Evolution of acquisition sensors implies a continuous growth of datasets and consequently more and more computing power is needed to maintain interactive reconstructions. General purprose processors (GPP) evolving towards parallelism and emerging architectures such as GPU allow large acceleration possibilities than can be applied to these algorithms.The main goal of the thesis is to evaluate the acceleration than can be obtained for two reconstruction algorithms on these architectures. These two algorithms differ in their parallelization scheme. The first one can be properly parallelized on GPP whereas on GPU, an intensive use of atomic instructions is required. Within the second algorithm, parallelism is easier to express, but loop ordering on GPP, as well as thread scheduling and a good use of shared memory on GPU are necessary in order to obtain efficient results. Different API or libraries, such as OpenMP, CUDA and OpenCL are evaluated through chosen benchmarks. An integration of both algorithms in the CIVA software platform is proposed and different issues related to code maintenance and durability are discussed.
Complete list of metadata

Cited literature [44 references]  Display  Hide  Download

https://theses.hal.science/tel-00844749
Contributor : ABES STAR :  Contact
Submitted on : Monday, July 15, 2013 - 6:04:45 PM
Last modification on : Thursday, February 17, 2022 - 10:08:04 AM
Long-term archiving on: : Wednesday, April 5, 2017 - 12:08:18 PM

File

VD2_PEDRON_ANTOINE_28052013.pd...
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-00844749, version 1

Collections

CEA | STAR | DRT | LIST

Citation

Antoine Pedron. Développement d’algorithmes d’imagerie et de reconstruction sur architectures à unités de traitements parallèles pour des applications en contrôle non destructif. Autre [cond-mat.other]. Université Paris Sud - Paris XI, 2013. Français. ⟨NNT : 2013PA112071⟩. ⟨tel-00844749⟩

Share

Metrics

Record views

332

Files downloads

1261