CHARMED: a multi-objective co-synthesis framework for multi-mode embedded systems

Abstract

In this paper, we present a modular co-synthesis framework called CHARMED that solves the problem of hardware-software co-synthesis of periodic, multi-mode, distributed, embedded systems. In this framework we perform the synthesis under several constraints while optimizing for a set of objectives. We allow the designer to fully control the performance evaluation process, constraint parameters, and optimization goals. Once the synthesis is performed, we provide the designer a non-dominated set (Pareto front) of implementations on streamlined architectures that are in general heterogeneous and distributed. We also employ two different techniques, namely clustering and parallelization, to reduce the complexity of the solution space and expedite the search. The experimental results demonstrate the effectiveness of the CHARMED framework in computing efficient co-synthesis solutions within a reasonable amount of time.

Energy-efficient task allocation and scheduling for multi-mode MPSoCs under lifetime reliability constraint

“…Our proposed approach, however, could be easily extended to handle multiple task graphs for a single mode by constructing a hyper task graph and performing task scheduling on a hyper-period [13], if necessary. In addition, while there are other hardware resources in the MPSoC platform consuming energy and suffering from wearout failures, we mainly consider processor cores in this work due to their heavy stress and varying operational behaviors.…”

Reliability-Aware System Synthesis

“…determine a valid schedule. As existing design space exploration approaches [11,13,14] are limited such in a way that each operation has to be bound exactly once, they fail to generate highly reliable solutions through redundancy. Thus, we have extended our design space exploration [13] by 1. generating solutions with multiple operation instances 2. providing a reliability evaluation method for our system model.…”

Towards a Compositional Multi-modal Framework for Adaptive Cyber-physical Systems

“…A multi-mode approach has also been used to achieve efficient use of resources; for instance, dynamic resource allocation techniques, such as adaptive servers [1], [2], [8], [9], have been developed for this purpose. Similarly, energy-efficient task allocation techniques that consider mode execution patterns have been proposed (e.g., [12], [13], [23]). …”