DATE '03 Proceedings of the conference on Design, Automation and Test in Europe - Volume 1
A control-based middleware framework for quality-of-service adaptations
IEEE Journal on Selected Areas in Communications
Self-adaptive on-chip system based on cross-layer adaptation approach
International Journal of Reconfigurable Computing
| Hi-index | 0.00 |
This paper presents our solution for specifying and implementing self-adaptivness within an OS-based and reconfigurable embedded system according to objectives such as quality of service (QoS), performance or power consumption. More precisely, we detail our approach to separate, at runtime, application-specific decisions and hardware/software implementation decisions at system level. The first ones are related to the control of the efficiency of applications, they are specified in Local Configuration Managers (LCM) based on the knowledge of application engineers. The second ones are generic and address the choice between various hardware and software implementations according to observations of the gap between online measurements and objectives set by the user, these decisions are implemented in the Global Configuration Manager (GCM) as an adaptive close-loop model. We have designed a video tracking application on an FPGA to demonstrate the effectiveness of our solution, results are given for a system built around a NIOS soft-core with ¼COS II RTOS and new services for managing hardware and soft-ware tasks transparently.