A Process for Resolving Performance Trade-Offs in Component-Based Architectures
نویسندگان
چکیده
Designing architectures requires the balancing of multiple system quality objectives. In this paper, we present techniques that support the exploration of the quality properties of component-based architectures deployed on multiprocessor platforms. Special attention is paid to real-time properties and efficiency of resource use. The main steps of the process are (1) a simple way of modelling properties of software and hardware components, (2) from the component properties, a model of an execution architecture is composed and analyzed for system-level quality attributes, (3) for the composed system, selected execution scenarios are evaluated, (4) Pareto curves are used for making design trade-offs explicit. The process has been applied to several industrial systems. A Car Radio Navigation system is used to illustrate the method. For this system, we consider architectural alternatives, show their specification, and present their trade-off with respect to cost, performance and robustness.
منابع مشابه
Resolving Design Trade-offs with the BIGT Concept
The Bi-mode Insulated Gate Transistor BIGT is a single chip reverse conducting IGBT concept, which is foreseen to replace the standard IGBT / Diode two chip approach in many high power semiconductor applications. Therefore, it is necessary to understand in detail the design challenges and performance trade-offs faced when optimizing the BIGT for different application requirements. In this paper...
متن کاملUniversal Health Coverage – The Critical Importance of Global Solidarity and Good Governance; Comment on “Ethical Perspective: Five Unacceptable Trade-offs on the Path to Universal Health Coverage”
This article provides a commentary to Ole Norheim’ s editorial entitled “Ethical perspective: Five unacceptable trade-offs on the path to universal health coverage.” It reinforces its message that an inclusive, participatory process is essential for ethical decision-making and underlines the crucial importance of good governance in setting fair priorities in healthcare. Solidarity on both natio...
متن کاملEthical Perspective: Five Unacceptable Trade-offs on the Path to Universal Health Coverage
This article discusses what ethicists have called “unacceptable trade-offs” in health policy choices related to universal health coverage (UHC). Since the fiscal space is constrained, trade-offs need to be made. But some trade-offs are unacceptable on the path to universal coverage. Unacceptable choices include, among other examples from low-income countries, to expand coverage for services wit...
متن کاملPragmatic integrated scheduling for clustered VLIW architectures
Clustered architecture processors are preferred for embedded systems because centralized register file architectures scale poorly in terms of clock rate, chip area, and power consumption. Scheduling for clustered architectures involves spatial concerns (where to schedule) as well as temporal concerns (when to schedule). Various clustered VLIW configurations, connectivity types, and inter-cluste...
متن کاملSpeech Enhancement by Modified Convex Combination of Fractional Adaptive Filtering
This paper presents new adaptive filtering techniques used in speech enhancement system. Adaptive filtering schemes are subjected to different trade-offs regarding their steady-state misadjustment, speed of convergence, and tracking performance. Fractional Least-Mean-Square (FLMS) is a new adaptive algorithm which has better performance than the conventional LMS algorithm. Normalization of LMS ...
متن کامل