2018
Authors
Nélis, V; Yomsi, PM; Pinho, LM;
Publication
High-Performance and Time-Predictable Embedded Computing
Abstract
This chapter focuses on the analysis of the timing behavior of software applications that expose real-time (RT) requirements. The state-of-the-art methodologies to timing analysis of software programs are generally split into four categories, referred to as static, measurement-based, hybrid, and probabilistic analysis techniques. First, we present an overview of each of these methodologies and discuss their advantages and disadvantages. Next, we explain the choices made by our proposed methodology in Section 5.2 and present the details of the solution in Section 5.3. Finally, we conclude the chapter in Section 5.4 with a summary.
2018
Authors
Royuela, S; Martorell, X; Quinones, E; Pinho, LM;
Publication
RELIABLE SOFTWARE TECHNOLOGIES - ADA-EUROPE 2018
Abstract
There is a growing need to support parallel computation in Ada to cope with the performance requirements of the most advanced functionalities of safety-critical systems. In that regard, the use of parallel programming models is paramount to exploit the benefits of parallelism. Recent works motivate the use of OpenMP for being a de facto standard in high-performance computing for programming shared memory architectures. These works address two important aspects towards the introduction of OpenMP in Ada: the compatibility of the OpenMP syntax with the Ada language, and the interoperability of the OpenMP and the Ada runtimes, demonstrating that OpenMP complements and supports the structured parallelism approach of the tasklet model. This paper addresses a third fundamental aspect: functional safety from a compiler perspective. Particularly, it focuses on race conditions and considers the fine-grain and unstructured capabilities of OpenMP. Hereof, this paper presents a new compiler analysis technique that: (1) identifies potential race conditions in parallel Ada programs based on OpenMP or Ada tasks or both, and (2) provides solutions for the detected races.
2018
Authors
Faucou, S; Pinho, LM;
Publication
REAL-TIME SYSTEMS
Abstract
2018
Authors
Pinho, LM; Quinones, E; Royuela, S;
Publication
Ada User Journal
Abstract
Previous workshops have discussed a proposal to augment Ada with fine-grained parallelism, based on the notion of tasklets, a lightweight parallel entity. Recent works have shown the convergence of this model with the OpenMP tasking model and have proposed their coexistence. In this paper we provide a status of the existent works, and describe how these models could be combined.
2018
Authors
Barros, A;
Publication
Abstract
2018
Authors
Pego, A; Bernardo, MdRM;
Publication
Handbook of Research on Entrepreneurial Ecosystems and Social Dynamics in a Globalized World - Advances in Business Strategy and Competitive Advantage
Abstract
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