You are required to read and agree to the below before accessing a full-text version of an article in the IDE article repository.

The full-text document you are about to access is subject to national and international copyright laws. In most cases (but not necessarily all) the consequence is that personal use is allowed given that the copyright owner is duly acknowledged and respected. All other use (typically) require an explicit permission (often in writing) by the copyright owner.

For the reports in this repository we specifically note that

  • the use of articles under IEEE copyright is governed by the IEEE copyright policy (available at http://www.ieee.org/web/publications/rights/copyrightpolicy.html)
  • the use of articles under ACM copyright is governed by the ACM copyright policy (available at http://www.acm.org/pubs/copyright_policy/)
  • technical reports and other articles issued by M‰lardalen University is free for personal use. For other use, the explicit consent of the authors is required
  • in other cases, please contact the copyright owner for detailed information

By accepting I agree to acknowledge and respect the rights of the copyright owner of the document I am about to access.

If you are in doubt, feel free to contact webmaster@ide.mdh.se

A Dependency-Graph Based Priority Assignment Algorithm for Real-Time Traffic over NoCs with Shared Virtual-Channels

Publication Type:

Conference/Workshop Paper

Venue:

12th IEEE World Conference on Factory Communication Systems


Abstract

The Network-on-Chip (NoC) is the on-chip inter- connection medium of choice for modern massively parallel processors and System-on-Chip (SoC) in general. Fixed-priority based preemptive scheduling using virtual-channels is a solu- tion to support real-time communications in on-chip networks. Targeting the priority assignment problem in the context of NoCs, heuristic based priority assignment algorithms are more practical, due to the exponentially increased search space as the number of flows goes up. In our previous work, we have proposed a graph-based heuristic priority assignment algorithm (called GHSA) for NoC communications, where we show that taking the dependencies between flows into account can significantly reduce the search space. However, GHSA only works for NoCs with distinct priorities. Routers in such type of platforms may have a large amount of buffer cost when the number of flows is high. The applicability can thus be limited in reality. One solution to reduce the buffer cost is to allow priority sharing of different flows. In this paper, we propose a dependency-graph based priority assignment algorithm (called eGHSA) targeting NoCs with shared virtual-channels. A number of experiments as well as a case study based on an automotive application are generated, which clearly show that eGHSA improves the efficiency compared to the existing solution in the literature.

Bibtex

@inproceedings{Liu4337,
author = {Meng Liu and Matthias Becker and Moris Behnam and Thomas Nolte},
title = {A Dependency-Graph Based Priority Assignment Algorithm for Real-Time Traffic over NoCs with Shared Virtual-Channels},
month = {May},
year = {2016},
booktitle = {12th IEEE World Conference on Factory Communication Systems},
url = {http://www.es.mdu.se/publications/4337-}
}