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Memorias de investigación
Ponencias en congresos:
Characterizing Hyperspectral Data Layouts: Performance and Energy Efficiency in Embedded GPUs for PCA-based Dimensionality Reduction
Año:2019
Áreas de investigación
  • Ciencias de la computación y tecnología informática
Datos
Descripción
The increasing demand for HyperSpectral Imaging (HSI) applications has pushed the appearance of new, smaller and more affordable HS cameras. Their adoption in embedded systems with real-time and energy constraints open research questions given the huge amounts of data involved. Traditionally, this issue is tackled with dimensionality reduction algorithms as Principal Component Analysis (PCA). In this regard, a highly impacting factor in performance is the data layout used to store the 3D HS image into a 1D memory. In this paper, the impact of using the three main HS data layouts (BSQ, BIP and BIL) is analyzed in terms of performance and energy efficiency for two PCA methods in the embedded NVIDIA Jetson TX1 GPU-based accelerator. Results show the bottlenecks found for each layout along with architectural insights that explain the observed behaviours. Consequently, we provide a set of recommendations to select a suitable PCA method for best performance and energy efficiency, depending on the number of principal components required. Additionally, we observe how different orderings with similar results account for a much different developer?s productivity given the involved coding complexity in each case.
Internacional
Si
Nombre congreso
XXXIV Conference on Design of Circuits and Integrated Systems (DCIS 2019)
Tipo de participación
960
Lugar del congreso
Bilbao
Revisores
Si
ISBN o ISSN
978-1-7281-5458-9
DOI
10.1109/DCIS201949030.2019.8959835
Fecha inicio congreso
20/11/2019
Fecha fin congreso
22/11/2019
Desde la página
1
Hasta la página
6
Título de las actas
2019 XXXIV Conference on Design of Circuits and Integrated Systems (DCIS)
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Jaime Sancho Aragon (UPM)
  • Autor: Sergio Sanchez Ramirez (UPM)
  • Autor: Raquel Lazcano Lopez (UPM)
  • Autor: Daniel Madroñal Quintin (UPM)
  • Autor: Ruben Salvador Perea (UPM)
  • Autor: Eduardo Juarez Martinez (UPM)
  • Autor: Cesar Sanz Alvaro (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Grupo de Diseño Electrónico y Microelectrónico
  • Departamento: Ingeniería Telemática y Electrónica
  • Centro o Instituto I+D+i: Centro de Investigación en Tecnologías del Software y Sistemas Multimedia para la Sostenibilidad (CITSEM)
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