A method for capturing state data on dynamically reconfigurable processors

Vu Manh Tuan, Hideharu Amano

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

In a preemptive multitasking environment, when a task is preempted, necessary state information must be correctly preserved in order for the task to be resumed later. For hardware tasks executing on a coarse-grained dynamically reconfigurable processing array (DRPA), a greate amount of state data are usually distributed on many different storage elements. Besides, DRPAs have different architectures using a variety of development tools. This paper addresses such problems and propose a method for capturing the state data of hardware tasks. Based on resource usage analysis, algorithms for identifying preemption points and inserting preemption states subject to user-specified preemption latency are proposed. Also, the integaration of the proposed steps into the system design flow is discussed. The performance degradation caused by preemption is minimized by allowing preemption only at predefined points where demanded resources are small. The evaluation result using a model based on NEC Electronics DRP-1 shows that the proposed method could allow preemption for a certain task satisfying a given preemption latency with reasonable hardware overhead (from 6% to 15%).

Original languageEnglish
Title of host publicationProceedings of the 2008 International Conference on Engineering of Reconfigurable Systems and Algorithms, ERSA 2008
Pages208-214
Number of pages7
Publication statusPublished - 2008
Event2008 International Conference on Engineering of Reconfigurable Systems and Algorithms, ERSA 2008 - Las Vegas, NV, United States
Duration: 2008 Jul 142008 Jul 17

Publication series

NameProceedings of the 2008 International Conference on Engineering of Reconfigurable Systems and Algorithms, ERSA 2008

Other

Other2008 International Conference on Engineering of Reconfigurable Systems and Algorithms, ERSA 2008
Country/TerritoryUnited States
CityLas Vegas, NV
Period08/7/1408/7/17

Keywords

  • Dynamically reconfigurable processor
  • Hardware overhead
  • Preemption algorithm
  • Preemption latency

ASJC Scopus subject areas

  • Computer Science Applications
  • Hardware and Architecture
  • Software

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