Coordinated management of hardware and software self-adaptivity

Advances in Software Engineering

Ramankutty

Meloni

et al. 2012

Self Cite

Self-adaptivity is the ability of a system to adapt itself dynamically to internal and external changes. Such a capability helps systems to meet the performance and quality goals, while judiciously using available resources. In this paper, we propose a framework to implement application level self-adaptation capabilities in KPN applications running on NoC-based MPSoCs. The monitorcontroller-adapter mechanism is used at the application level. The monitor measures various parameters to check whether the system meets the assigned goals. The controller takes decisions to steer the system towards the goal, which are applied by the adapters. The proposed framework requires minimal modifications to the application code and offers ease of integration. It incorporates a generic adaptation controller based on fuzzy logic. We present the MJPEG encoder as a case study to demonstrate the effectiveness of the approach. Our results show that even if the parameters of the fuzzy controller are not tuned optimally, the adaptation convergence is achieved within reasonable time and error limits. Moreover, the incurred steady-state overhead due to the framework is 4% for average frame-rate, 3.5% for average bit-rate, and 0.5% for additional control data introduced in the network.

Section: Related Workmentioning

confidence: 99%

Towards Self-Adaptive KPN Applications on NoC-Based MPSoCs

Advances in Software Engineering

Ramankutty

Meloni

et al. 2012

Self Cite

“…In this paper we build a new framework for selfadaptivity based on the model of self-adaptive systems discussed in [5]. This model is generic enough to include a large number of electronic systems.…”

Section: Related Workmentioning

confidence: 99%

“…Though, hardware components can also be used and mixed with software ones [4]. The model of self-adaptive system that we took as a reference [5] natively provides this capability. The framework we propose here not only support self-adaptation through the replacement of components or their reconfiguration, it also supports changes in the topology of applications, for example to accommodate parallel components with the aim of satisfying high-level goals such as performances and/or enhanced reliability.…”

Section: Introductionmentioning

confidence: 99%

Enabling self-adaptivity in component-based streaming applications

Ferrante

2009

SIGBED Rev.

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Abstract-Self-adaptivity is the capability of a system to adapt itself dynamically to achieve its goals. By means of this mechanism the system is able to autonomously modify its behavior or the way in which applications are run and implemented to achieve the goals set.In this paper we propose a framework that uses a component-based approach to implement self-adaptivity at application level. By using this mechanism, the framework provides the ability to perform both adaptation on the structure of the application (i.e., how the components are connected together) and on internal parameters of each component. At application level, there is a mechanism to monitor different parameters and to check whether the system is meeting the assigned goals or not. A controller drives adaptations when goals are not met.

“…For this reason, separation of concerns (i.e., putting different concerns, that are functionalities and adaptation management, into different components that address them independently) between adaptation management and software functionalities is adopted. Also in our work, which is based on the model of self-adaptive systems discussed in [4], we put emphasis on separation of concerns. The model discussed in [4] is based on a layered approach and it provides the capability to manage hardware and software self-adaptivity globally to satisfy system and application non-functional requirements (i.e., goals such as performances and power consumption).…”

Section: Related Workmentioning

confidence: 99%

“…Also in our work, which is based on the model of self-adaptive systems discussed in [4], we put emphasis on separation of concerns. The model discussed in [4] is based on a layered approach and it provides the capability to manage hardware and software self-adaptivity globally to satisfy system and application non-functional requirements (i.e., goals such as performances and power consumption). The two system layers defined are the hardware and the software ones.…”

Section: Related Workmentioning

confidence: 99%

Simulation of a self-adaptive run-time environment with hardware and software components

Proceedings of the 2009 ESEC/FSE Workshop on Software Integration and Evolution @ Runtime

Ferrante

2009

Self Cite

In this paper we describe a new way for simulating selfadaptive systems developed by relying on a componentbased approach, this approach proves to be useful both in easing self-adaptivity and in providing the ability to mix hardware and software elements.Our simulation method is based on SACRE (Self-Adaptive Component Run-time Environment), a framework we have defined in Java for simulating self-adaptive systems.