NDLI: An evolutionary scheme for cosynthesis of real-time systems

Content Provider	IEEE Xplore Digital Library
Author	Chakraverty, S. Ravikumar, C.P. Choudhuri, D.R.
Copyright Year	2002
Description	Author affiliation: Netaji Subhas Inst. of Technol., New Delhi, India (Chakraverty, S.)
Abstract	We consider the problem of hardware-software cosynthesis of application-specific embedded real-time systems. We assume that these systems are based on a heterogeneous multiprocessor architecture. One of the key problems in the synthesis of such systems is that of scheduling the real-time tasks. The conventional approach to the problem has been to use a task graph to describe the dependencies among tasks and to assign constant weights to the nodes and edges of the graph. The node weights represent task execution times and the edge weights represent communication times. However, in many real-time applications, the execution time and communication times cannot be determined a-priori. One can use the conventional task graph model in such situations by taking the worst-case times, but such an approach is necessarily pessimistic and wasteful in terms of resource utilization. We propose a model which treats the task execution times and communication times as stochastic variables with beta distributions. A stochastic task scheduling algorithm is presented which maximizes the probability of meeting all real-time constraints. A genetic algorithm, which employs the stochastic scheduling algorithm, is used for the synthesis of a high performance embedded system at minimum cost. We present experimental results for three task graphs.
Sponsorship	VLSI Soc. India (VSI)
Starting Page	251
Ending Page	256
File Size	472868
Page Count	6
File Format	PDF
ISBN	0769514413
DOI	10.1109/ASPDAC.2002.994931
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-01-11
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Real time systems Very large scale integration
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in