The paper presents the design and multi-parameter optimization of a networked embedded application for the healthcare domain. Several hardware, software, and application parameters, such as clock frequency, sensor sam...
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ISBN:
(纸本)9781450314268
The paper presents the design and multi-parameter optimization of a networked embedded application for the healthcare domain. Several hardware, software, and application parameters, such as clock frequency, sensor sampling rate, data packet rate, are tuned at design- and run-time according to application specifications and operating conditions to optimize hardware requirements, packet loss, power consumption. Experimental results show that further power efficiency can be achieved by considering also communication aspects during design space exploration.
A main challenge in today's embedded system design is to find the perfect balance between performance and power consumption. This paper presents a run-time resource management framework for embedded heterogeneous ...
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ISBN:
(纸本)9781450314268
A main challenge in today's embedded system design is to find the perfect balance between performance and power consumption. This paper presents a run-time resource management framework for embedded heterogeneous multi-core platforms. It allows dynamic adaptation to changing application context and transparent optimization of the platform resource usage following a distributed and hierarchical approach. A Global Resource Manager (GRM) is running in parallel with the central manager of the application on the host processor of the platform. Each IP core of the platform can execute its own Local Resource Manager (LRM), and the GRM conforms to practices of each LRM. The operating points managed by the GRM are identified in a design-space exploration phase as a set of Pareto-optimal configurations of the application and their impacts with regards to the quality of experience, performance and energy consumption. The GRM has already been integrated in a POSIX version of an audio-driven video surveillance application in order to maximize its QoE parameters with respect to the battery duration and the energy budget of the platform, used to analyze the GRM efficiency.
The paper presents a novel abstraction methodology for generating time- and power-annotated TLM models from synthesizable RTL descriptions. The proposed techniques allow the integration of existing RTL IP components i...
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ISBN:
(纸本)9781450314268
The paper presents a novel abstraction methodology for generating time- and power-annotated TLM models from synthesizable RTL descriptions. The proposed techniques allow the integration of existing RTL IP components into virtual platforms for early software development and platform design, configuration, and exploration. With the proposed approach, IP models can be natively integrated into SystemC TLM-2.0 platforms and executed 10-1000 times faster compared to state-of-the-art RTL simulators. The abstraction methodology guarantees preservation of the behaviour and timing of the RTL models. Target technology dependent power properties of IP components are represented as power state-machines and integrated into the abstracted TLM models. The experimental results show a relative error less than 10% of the abstracted model's power consumption compared to state-of-the-art RTL power simulators. The evaluation has been performed on RTL IP components with different characteristics and demonstrates the effectiveness of the presented abstraction methodology.
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