Job-class-level fixed priority scheduling of weakly-hard real-time systems

H Choi, H Kim, Q Zhu - 2019 IEEE Real-Time and Embedded …, 2019 - ieeexplore.ieee.org
Many cyber-physical applications including sensing and control operations can tolerate a
certain degree of timing violations as long as the number of the violations are predictably …

Chain-based fixed-priority scheduling of loosely-dependent tasks

H Choi, M Karimi, H Kim - 2020 IEEE 38th International …, 2020 - ieeexplore.ieee.org
Many cyber-physical applications consist of chains of tasks. Such tasks are often loosely
dependent, meaning task execution is time-triggered and independent of the update rate of …

Toward practical weakly hard real-time systems: A job-class-level scheduling approach

H Choi, H Kim, Q Zhu - IEEE Internet of Things Journal, 2021 - ieeexplore.ieee.org
Recent applications of the Internet of Things and cyber-physical systems require the
integration of many sensing and control tasks into resource-constrained embedded devices …

Overrun-resilient multiprocessor real-time locking

Z Tong, S Ahmed, JH Anderson - 34th Euromicro Conference on …, 2022 - drops.dagstuhl.de
Existing real-time locking protocols require accurate worst-case execution time (WCET)
estimates for both tasks and critical sections (CSs) in order to function correctly. On multicore …

vMPCP: A synchronization framework for multi-core virtual machines

H Kim, S Wang, R Rajkumar - 2014 IEEE Real-Time Systems …, 2014 - ieeexplore.ieee.org
The virtualization of real-time systems has received much attention for its many benefits,
such as the consolidation of individually developed real-time applications while maintaining …

Cache-aware real-time virtualization for clustered multi-core platforms

Y Lim, H Kim - IEEE Access, 2019 - ieeexplore.ieee.org
With the increasing complexity of recent autonomous platforms, there is a strong demand to
better utilize system resources while satisfying stringent real-time requirements. Embedded …

Hard constant bandwidth server: Comprehensive formulation and critical scenarios

A Biondi, A Melani, M Bertogna - Proceedings of the 9th IEEE …, 2014 - ieeexplore.ieee.org
The Constant Bandwidth Server (CBS) is one of the most used algorithms for implementing
resource reservation upon deadline-based schedulers. Although many CBS variants are …

Ultra low-power high-speed single-bit hybrid full adder circuit

M Kumar, RK Baghel - 2017 8th International Conference on …, 2017 - ieeexplore.ieee.org
In this paper a low power hybrid 1-bit full adder circuit is designed and extended for 4 bit
ripple carry adder (RCA). A new XNOR logic is designed using complimentary-metal-oxide …

Power-aware scheduling of compositional real-time frameworks

GM Tchamgoue, KH Kim, YK Jun - Journal of Systems and Software, 2015 - Elsevier
The energy consumption problem has become a great challenge in all computing areas
from modern handheld devices to large data centers. Dynamic voltage scaling (DVS) is …

[PDF][PDF] Work-in-progress: A unified runtime framework for weakly-hard real-time systems

H Choi, H Kim - Brief Presentations of RTAS, 2019 - 2019.rtas.org
A weakly-hard real-time system is a system that can tolerate a bounded number of timing
violations. There have been various assumptions made by prior work on handling deadline …