Memory-access-driven context partitioning for window-based image processing on heterogeneous multicore processors

Hasitha Muthumala Waidyasooriya, Yosuke Ohbayashi, Masanori Hariyama, Michitaka Kameyama

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Accelerator cores in low-power heterogeneous processors have on-chip local memories to enable parallel data access. The memory capacities of the local memories are very small. Therefore, the data should be transferred from the global memory to the local memories many times. These data transfers greatly increase the total processing time. Memory allocation technique to increase the data sharing is a good solution to this problem. However, when using reconfigurable cores, the data must be shared among multiple contexts. However, conventional context partitioning methods only consider how to reuse limited hardware resources in different time slots. They do not consider the data sharing. This paper proposes a context partitioning method to share both the hardware resources and the local memory data. According to the experimental results, the proposed method reduces the processing time by more than 87% compared to conventional context partitioning techniques.

Original languageEnglish
Pages (from-to)354-363
Number of pages10
JournalIEICE Transactions on Information and Systems
VolumeE95-D
Issue number2
DOIs
Publication statusPublished - 2012 Feb

Keywords

  • Memory allocation
  • Partitioning
  • Reconfigurable processors

ASJC Scopus subject areas

  • Software
  • Hardware and Architecture
  • Computer Vision and Pattern Recognition
  • Electrical and Electronic Engineering
  • Artificial Intelligence

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