Variations on a Theme: A Bibliography on Approaches to Theorem Proving Inspired From Satchmo

This articles is a structured bibliography on theorem provers, approaches to theorem proving, and theorem proving applications inspired from Satchmo, the model generation theorem prover developed in the mid 80es of the 20th century at ECRC, the European Computer- Industry Research Centre. Note that the bibliography given in this article is not exhaustive

C Language Extensions for Hybrid CPU/GPU Programming with StarPU

Modern platforms used for high-performance computing (HPC) include machines with both general-purpose CPUs, and "accelerators", often in the form of graphical processing units (GPUs). StarPU is a C library to exploit such platforms. It provides users with ways to define "tasks" to be executed on CPUs or GPUs, along with the dependencies among them, and by automatically scheduling them over all the available processing units. In doing so, it also relieves programmers from the need to know the underlying architecture details: it adapts to the available CPUs and GPUs, and automatically transfers data between main memory and GPUs as needed. While StarPU's approach is successful at addressing run-time scheduling issues, being a C library makes for a poor and error-prone programming interface. This paper presents an effort started in 2011 to promote some of the concepts exported by the library as C language constructs, by means of an extension of the GCC compiler suite. Our main contribution is the design and implementation of language extensions that map to StarPU's task programming paradigm. We argue that the proposed extensions make it easier to get started with StarPU,eliminate errors that can occur when using the C library, and help diagnose possible mistakes. We conclude on future work

E\{Java, CaesarJ, Scala\} : un exercice d'intégration de la programmation par objets, par aspects et par évènements

National audienceLa programmation par évènements et la programmation par aspects sont des paradigmes de programmation qui s'avèrent compléter utilement la programmation par objets dans une très large gamme d'applications. Leur utilisation concomitante, bien que possible dans un langage comme Java, est toutefois malaisée. Malgré leur très grande proximité, les solutions proposées présentent de nombreuses faiblesses et des irrégularités qui sont des sources notables de perplexité et de complexité. Il est toutefois possible de résoudre ces problèmes en centrant l'intégration des trois paradigmes autour des principes de la programmation par objets et de réaligner autour de ces principes l'ensemble des concepts rencontrés. On obtient alors un modèle régulier et très flexible de programmation. Ce modèle a été implémenté avec quelques variations dans EJava, ECaesarJ et EScala, qui étendent respectivement Java, CaesarJ et Scala

Can models be useful for deciding to convert to organic fruit growing ? An introduction to the discussion

Modern high-input agriculture has produced great increases in crop yields but social and environmental costs have also been high. Over the past decades, sustainability has become more and more a guiding principle in agriculture. In this context, organic farming became recognised by farmers, policymakers and consumers as one of the possibilities for the farmer in a more sustainable way (De Cock L., 2005)