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Energy-aware Scheduling based Tasks dynamic Priority on Homogeneous Multiprocessor Platforms

Shahira M.
2018 International Journal of Computer Applications  
We are experimentally inspected the effect of our dynamic priority algorithm using feasibility, energy and feasibility/energy performance measurement.  ...  We propose an integrated approach that assigns a dynamic priority to each task in ready queue related to every ready processor based on task deadline and processor load.  ...  An admission control and a scheduling policy should be used to ensure that criteria for the real-time system.  ... 
doi:10.5120/ijca2018916237 fatcat:jtlnkqxqqzaxdhfpbd7wibfqau

Energy management for tiny real-time kernels

Mario Bambagini, Francesco Prosperi, Mauro Marinoni, Giorgio Buttazzo
2011 2011 International Conference on Energy Aware Computing  
The obtained results show both the effectiveness of the presented component and the impact of operating mode changes on global performance.  ...  In this paper, we present a power management module designed for tiny embedded operating systems and implemented in the Erika Enterprise, an OSEK-compliant kernel.  ...  ., run to sleep) actuated in DPM approaches introduce an overhead in terms of both switching time and energy loss. In real implementations on real-time kernels, such contributions cannot be ignored.  ... 
doi:10.1109/iceac.2011.6136687 dblp:conf/iceac/BambaginiPMB11 fatcat:sbd37shi3navhovu5scblcurbi

Online Task-Scheduling for Fault-Tolerant Low-Energy Real-Time Systems

Tongquan Wei, Piyush Mishra, Kaijie Wu, Han Liang
2006 Computer-Aided Design (ICCAD), IEEE International Conference on  
In this paper we investigate fault tolerance and Dynamic Voltage Scaling (DVS) in hard real time systems.  ...  offline feasibility analysis.  ...  In this paper we propose efficient offline algorithms that combine feasibility analysis and voltage scaling for hard real time systems based on exact characterization of RMA.  ... 
doi:10.1109/iccad.2006.320168 fatcat:cpqumcbt2jfzron75m4p4jyh4m

Online task-scheduling for fault-tolerant low-energy real-time systems

Tongquan Wei, Piyush Mishra, Kaijie Wu, Han Liang
2006 Computer-Aided Design (ICCAD), IEEE International Conference on  
In this paper we investigate fault tolerance and Dynamic Voltage Scaling (DVS) in hard real time systems.  ...  offline feasibility analysis.  ...  In this paper we propose efficient offline algorithms that combine feasibility analysis and voltage scaling for hard real time systems based on exact characterization of RMA.  ... 
doi:10.1145/1233501.1233607 dblp:conf/iccad/WeiMWL06 fatcat:x34uc2luaraz3jp4zs7klxqn34

Energy-aware packet and task co-scheduling for embedded systems

Luca Santinelli, Mauro Marinoni, Francesco Prosperi, Francesco Esposito, Gianluca Franchino, Giorgio Buttazzo
2010 Proceedings of the tenth ACM international conference on Embedded software - EMSOFT '10  
The effectiveness of both DVS and DPM needs to be considered in the development of a power management policy for a system that consists of both DVS-enabled and DPM-enabled components.  ...  This paper explores how to efficiently reduce the power consumption of real-time applications with constrained resources, like energy, CPU, and transmission bandwidth.  ...  SYSTEM MODELS We consider a distributed real-time embedded system consisting of a set of wireless nodes.  ... 
doi:10.1145/1879021.1879058 dblp:conf/emsoft/SantinelliMPEFB10 fatcat:3gzggzte75cktagly55hixf2p4

Train trajectory optimization for improved on-time arrival under parametric uncertainty

Pengling Wang, Alessio Trivella, Rob M.P. Goverde, Francesco Corman
2020 Transportation Research Part C: Emerging Technologies  
time costs over iterations, and (ii) an on-line search process to determine energy-efficient driving strategies that respect the real-time time windows, more in general expressed as train path envelope  ...  In this paper we study the problem of computing train trajectories in an uncertain environment in which the values of some system parameters are difficult to determine.  ...  updates the policies in real-time.  ... 
doi:10.1016/j.trc.2020.102680 fatcat:kyu6iyblqjhi3isqjhuuywcbme

Off-Line Computation of Real-Time Schedules by Means of Petri nets [chapter]

Emmanuel Grolleau, Annie Choquet-Geniet
2000 Discrete Event Systems  
We present an off-line methodology of analysis of real-time systems, composed of periodic, precedence and resource constrained real-time tasks.  ...  As there is no polynomial optimal scheduling technique for such tasks sets, we present an enumerative method based on the construction of the state graph of a Petri net.  ...  of feasibility tests of on-line schedulability decreases.  ... 
doi:10.1007/978-1-4615-4493-7_32 fatcat:unh3uvsc7vdiri5ovng43ljwnm

A Formal Approach to Power Optimization in CPSs with Delay-Workload Dependence Awareness [article]

Hyung-Chan An, Hoeseok Yang, Soonhoi Ha
2016 arXiv   pre-print
The design of cyber-physical systems (CPSs) faces various new challenges that are unheard of in the design of classical real-time systems.  ...  The presence of interaction between the cyber and physical components of a CPS leads to dependence between the time delay of a computational task and the amount of workload in the next iteration.  ...  Acknowledgment The authors would like to thank the anonymous reviewers of versions of this paper [31, 2] for their helpful comments, and Prof. Seokhee Jeon, Prof. Yong Seok Heo, and Prof.  ... 
arXiv:1601.08046v1 fatcat:yrkjtdql2rdbpjtmqllhck5tdu

Synchronization-Aware Energy Management for VFI-Based Multicore Real-Time Systems

Jian-Jun Han, Xiaodong Wu, Dakai Zhu, Hai Jin, Laurence T. Yang, Jean-Luc Gaudiot
2012 IEEE transactions on computers  
For a set of periodic real-time tasks that access shared resources running on a VFI-based multicore system with dynamic voltage and frequency scaling (DVFS) capability, we study both static and dynamic  ...  Multicore processors have emerged to be the popular and powerful computing engines to address the increasing performance demands and energy efficiency requirements of modern real-time applications.  ...  Any opinions, findings, and conclusions as well as recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.  ... 
doi:10.1109/tc.2012.136 fatcat:75rr74einfcoxhczjuwsw2yctq

Rapid services – the Czech high-speed rail project for Central Europe

Jan Ilík, Agata Pomykala, A. Szeląg, K. Karwowski, H. Gold, A. Żurkowski
2018 MATEC Web of Conferences  
In March 2017, the Czech parliament passed a resolution obliging the government to launch a high-speed line program. Government resolution on launching the program was adopted in May 2017.  ...  Since 2010 in Polish -Czech cooperation are being prepared studies on lines Wrocław -Praga and Katowice -Ostrava.  ...  of high speed railways system.  ... 
doi:10.1051/matecconf/201818001006 fatcat:4lepxldtazfcpkjzgjkrhgpnre

Application of the Model Predictive Control with Constraint Tightening for ATO System

Longsheng Wang, Hongze Xu, Changfu Zou, Guang Yang
2015 International Journal of Control and Automation  
Based on the discrete linear multi-points train model, an ATO control algorithm is presented to track piecewise reference by using model predictive control with constraints tightening such that the feasibility  ...  Specifically, the features of the algorithm are: (i) taking traction and braking force of locomotives and braking force of carriges into account explicitly; (ii) integrating constraints tightening approach  ...  be forced to stop if the real speed of the train excesses the ATP protection speed.  ... 
doi:10.14257/ijca.2015.8.11.24 fatcat:gvhkjhj3gvhkrmv7dcatwadsaa

Guaranteed scheduling for repetitive hard real-time tasks under the maximal temperature constraint

Gang Quan, Yan Zhang, William Wiles, Pei Pei
2008 Proceedings of the 6th IEEE/ACM/IFIP international conference on Hardware/Software codesign and system synthesis - CODES/ISSS '08  
We study the problem of scheduling repetitive real-time tasks with the Earliest Deadline First (EDF) policy that can guarantee the given maximal temperature constraint.  ...  ., to repeat the schedule that is feasible through the range of one hyperperiod, does not apply any more.  ...  As long as the tasks are feasible in [0, L], by replicating the schedule, the timing feasibility of the real-time system is guaranteed.  ... 
doi:10.1145/1450135.1450196 dblp:conf/codes/QuanZWP08 fatcat:hm43byc7cnh4lcyztghn2rua7y

Limiting Worst-Case End-to-End Latency When Traffic Increases in a Switched Avionics Network

Min-Young Nam, Eunsoo Seo, Lui Sha, Kyung-Joon Park, Kyungtae Kang
2011 2011 IEEE 17th International Conference on Embedded and Real-Time Computing Systems and Applications  
Our clock-driven real-time switching algorithm is throughput-optimal with a bounded worst-case delay for all feasible traffic.  ...  Our approach to analysis can be used to determine, quickly but rigorously, which system architecture meet timing constraints; and it allows the system architect to manage the cascading effects of component  ...  Bradford of Rockwell Collins for his suggestions on improving our communication to audience in the avionics community.  ... 
doi:10.1109/rtcsa.2011.9 dblp:conf/rtcsa/NamSSPK11 fatcat:r2bbta37bvgxdoi6ujer3pw5nu

Bringing simulation to life: A mixed reality autonomous intersection

M Quinlan, Tsz-Chiu Au, J Zhu, N Stiurca, P Stone
2010 2010 IEEE/RSJ International Conference on Intelligent Robots and Systems  
To realistically test the protocol, we implemented a mixed reality platform on which an autonomous vehicle can interact with multiple virtual vehicles in a simulation at a real intersection in real time  ...  Fully autonomous vehicles are technologically feasible with the current generation of hardware, as demonstrated by recent robot car competitions.  ...  {mquinlan,chiu,jzhu,nstiurca,pstone} performance of real autonomous vehicles at real intersections under the FCFS policy.  ... 
doi:10.1109/iros.2010.5651993 dblp:conf/iros/QuinlanAZSS10 fatcat:jn4nhygknnfx7kajlxulox6vtu

On-Line and Off-Line DVS for Fixed Priority with Preemption Threshold Scheduling

Liu Yang, Lin Man
2009 2009 International Conference on Embedded Software and Systems  
Along with the prevailing of mobile devices, the demand for efficient power consumption has become one of the major issues in designing embedded system.  ...  FPPT-DVS algorithm also combines the on-line DVS and off-line DVS together.  ...  The idea of static slowdown speed is to make use of static slack time. If there exists some static slack time in one system, then we can reduce the overall system speed.  ... 
doi:10.1109/icess.2009.50 dblp:conf/icess/YangL09 fatcat:5m63ppsbbjaepiq5d6pi36pkz4
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