Document Open Access Logo

Is Chip-Multiprocessing the End of Real-Time Scheduling?

Authors Martin Schoeberl, Peter Puschner



PDF
Thumbnail PDF

File

OASIcs.WCET.2009.2288.pdf
  • Filesize: 139 kB
  • 11 pages

Document Identifiers

Author Details

Martin Schoeberl
Peter Puschner

Cite AsGet BibTex

Martin Schoeberl and Peter Puschner. Is Chip-Multiprocessing the End of Real-Time Scheduling?. In 9th International Workshop on Worst-Case Execution Time Analysis (WCET'09). Open Access Series in Informatics (OASIcs), Volume 10, pp. 1-11, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)
https://doi.org/10.4230/OASIcs.WCET.2009.2288

Abstract

Chip-multiprocessing is considered the future path for performance enhancements in computer architecture. Eight processor cores on a single chip are state-of-the art and several hundreds of cores on a single die are expected in the near future. General purpose computing is facing the challenge how to use the many cores. However, in embedded real-time systems thread-level parallelism is naturally used. In this paper we assume a system where we can dedicate a single core for each thread. In that case classic real-time scheduling disappears. However, the threads, running on their dedicated core, still compete for a shared resource, the main memory. A time-sliced memory arbiter is used to avoid timing influences between threads. The schedule of the arbiter is integrated into the worst-case execution time (WCET) analysis. The WCET results are used as a feedback to regenerate the arbiter schedule. Therefore, we schedule memory access instead of CPU time.
Keywords
  • WCET analysis
  • multicore
  • chip multiprocessing
  • memory access scheduling

Metrics

  • Access Statistics
  • Total Accesses (updated on a weekly basis)
    0
    PDF Downloads
Questions / Remarks / Feedback
X

Feedback for Dagstuhl Publishing


Thanks for your feedback!

Feedback submitted

Could not send message

Please try again later or send an E-mail