Cart (Loading....) | Create Account
Close category search window
 

Supporting demanding hard-real-time systems with STI

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

5 Author(s)
Welch, B.J. ; Wireless & Event Sensing Appl., Sandria Nat. Labs., Albuquerque, NM, USA ; Kanaujia, S.O. ; Seetharam, A. ; Thirumalai, D.
more authors

Software thread integration (STI) is a compilation technique which enables the efficient use of an application's fine-grain idle time on generic processors without special hardware support. With STI, a primary function is automatically interleaved with a secondary function to create a single implicitly multithreaded function which minimizes context switching and, hence, both improves performance and also offers very fine-grain concurrency. In this work, we extend STI techniques to address two challenges. First, we reduce response time for interrupts or other high-priority threads by introducing polling servers into integrated threads. Second, we enable integration with long host threads, expanding the domain of STI. We derive methods to evaluate the response time for threads in systems with and without these new integration methods. We demonstrate these concepts with the integration of various threads in a sample hard-real-time system on a highly-constrained microcontroller. We use an inexpensive 20 MHz AVR 8-bit microcontroller to generate monochrome NTSC video while servicing a high-speed (115,2 kbaud) serial communication link. We have built and tested this system, achieving graphics rendering speed-ups of 3.99× to 13.5×.

Published in:

Computers, IEEE Transactions on  (Volume:54 ,  Issue: 10 )

Date of Publication:

Oct. 2005

Need Help?


IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.